ORACLE 12C ORA-07445[ktuHistRecUsegCrtMain()+1173]恢复

标题：ORACLE 12C ORA-07445[ktuHistRecUsegCrtMain()+1173]恢复

在ORACLE 12C的使用中,遇到ORA-07445: 出现异常错误: 核心转储 [ktuHistRecUsegCrtMain()+1173]的错误,通过10046分析是在查询cdef$表的时候异常,导致数据库无法正常open,通过recover database,然后open成功,怀疑是oracle 12C bug,但是mos中未查询到相关记录,后续不知道是否会出现相关文档说明该问题.
数据库版本

BANNER                                                                               CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production              0
PL/SQL Release 12.1.0.1.0 - Production                                                    0
CORE    12.1.0.1.0      Production                                                        0
TNS for 64-bit Windows: Version 12.1.0.1.0 - Production                                   0
NLSRTL Version 12.1.0.1.0 - Production                                                    0

oracle 12c启动报错

idle> startup
ORACLE 例程已经启动。
Total System Global Area  400846848 bytes
Fixed Size                  2440024 bytes
Variable Size             281019560 bytes
Database Buffers          109051904 bytes
Redo Buffers                8335360 bytes
数据库装载完毕。
ORA-03113: 通信通道的文件结尾
进程 ID: 5972
会话 ID: 242 序列号: 3

alert日志报ORA-07445: 出现异常错误: 核心转储 [ktuHistRecUsegCrtMain()+1173]错

Sun Mar 30 22:35:22 2014
SMON: enabling cache recovery
Sun Mar 30 22:35:23 2014
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0x6060] [PC:0x140808585, ktuHistRecUsegCrtMain()+1173]
Errors in file E:\APP\XIFENFEI\diag\rdbms\xifenfei\xifenfei\trace\xifenfei_ora_5192.trc  (incident=45790):
ORA-07445: 出现异常错误: 核心转储 [ktuHistRecUsegCrtMain()+1173] [ACCESS_VIOLATION] [ADDR:0x6060] [PC:0x140808585] [UNABLE_TO_READ] []
Incident details in: E:\APP\XIFENFEI\diag\rdbms\xifenfei\xifenfei\incident\incdir_45790\xifenfei_ora_5192_i45790.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Sun Mar 30 22:35:28 2014
Instance Critical Process (pid: 22, ospid: 5192) died unexpectedly
PMON (ospid: 8420): terminating the instance due to error 12752

恢复数据库

idle> recover database;
完成介质恢复。
idle> alter database open;
数据库已更改。

ORACLE 12C redo异常恢复测试—打上patch恢复完全

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C redo异常恢复测试—打上patch恢复完全

在上一篇中,我们删除redo,然后通过非常规方法使得cdb open成功,但是pdb无法正常mount,通过查询mos确定是bug 16784143,具体见:ORACLE 12C redo异常恢复测试—部分pdb未正常open,通过给数据库打上12.1.0.3的patch之后,发现已经损坏的数据库的pdb无法正常open,但是在损坏之前如果是打上补丁的数据库其pdb可以正常open
patch信息

C:\Users\XIFENFEI>E:\oracle\product\11.2.0\dbhome_1\OPatch\opatch lspatches
17977915;WINDOWS DB BUNDLE PATCH 12.1.0.1.3 (64bit): (17977915)

session 1

XIFENFEI_CDB$ROOT@SYS> show con_name;
CON_NAME
------------------------------
CDB$ROOT
XIFENFEI_CDB$ROOT@SYS> create table t_xifenfei as select * from dba_users;
表已创建。
XIFENFEI_CDB$ROOT@SYS> delete from t_xifenfei;
已删除 35 行。
XIFENFEI_CDB$ROOT@SYS>

session 2

XIFENFEI_CDB$ROOT@SYS> show con_name;
CON_NAME
------------------------------
PDB1
XIFENFEI_CDB$ROOT@SYS> create table t_xifenfei as select * from dba_users;
表已创建。
XIFENFEI_CDB$ROOT@SYS> delete from t_xifenfei;
已删除 36 行。
XIFENFEI_CDB$ROOT@SYS>

session 3

XIFENFEI_CDB$ROOT@SYS> alter session set container=pdb2;
会话已更改。
XIFENFEI_CDB$ROOT@SYS> alter database open;
数据库已更改。
XIFENFEI_CDB$ROOT@SYS> show con_name;
CON_NAME
------------------------------
PDB2
XIFENFEI_CDB$ROOT@SYS>

session 4

XIFENFEI_CDB$ROOT@SYS> shutdown abort;
ORACLE 例程已经关闭。

删除所有redo，并启动数据库

C:\Users\XIFENFEI>sqlplus / as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on 星期日 3月 30 21:07:55 2014
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
已连接到空闲例程。
idle> startup mount;
ORACLE 例程已经启动。
Total System Global Area  400846848 bytes
Fixed Size                  2440024 bytes
Variable Size             289408168 bytes
Database Buffers          100663296 bytes
Redo Buffers                8335360 bytes
数据库装载完毕。
idle> alter database open;
alter database open
*
第 1 行出现错误:
ORA-00313: 无法打开日志组 3 (用于线程 1) 的成员
ORA-00312: 联机日志 3 线程 1: 'E:\APP\XIFENFEI\ORADATA\XIFENFEI\REDO03.LOG'
ORA-27041: 无法打开文件
OSD-04002: 无法打开文件
O/S-Error: (OS 2) 系统找不到指定的文件。
尝试恢复数据库

idle> select status,group# from v$log;
STATUS               GROUP#
---------------- ----------
INACTIVE                  1
CURRENT                   3
INACTIVE                  2
idle> recover database until cancel;
ORA-00279: 更改 2821739 (在 03/30/2014 20:58:39 生成) 对于线程 1 是必需的
ORA-00289: 建议:
E:\APP\XIFENFEI\FAST_RECOVERY_AREA\XIFENFEI\ARCHIVELOG\2014_03_30\O1_MF_1_36_%U_
.ARC
ORA-00280: 更改 2821739 (用于线程 1) 在序列 #36 中
指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
auto
ORA-00308: 无法打开归档日志
'E:\APP\XIFENFEI\FAST_RECOVERY_AREA\XIFENFEI\ARCHIVELOG\2014_03_30\O1_MF_1_36_%U
_.ARC'
ORA-27041: 无法打开文件
OSD-04002: 无法打开文件
O/S-Error: (OS 2) 系统找不到指定的文件。
ORA-00308: 无法打开归档日志
'E:\APP\XIFENFEI\FAST_RECOVERY_AREA\XIFENFEI\ARCHIVELOG\2014_03_30\O1_MF_1_36_%U
_.ARC'
ORA-27041: 无法打开文件
OSD-04002: 无法打开文件
O/S-Error: (OS 2) 系统找不到指定的文件。
ORA-01547: 警告: RECOVER 成功但 OPEN RESETLOGS 将出现如下错误
ORA-01194: 文件 1 需要更多的恢复来保持一致性
ORA-01110: 数据文件 1: 'E:\APP\XIFENFEI\ORADATA\XIFENFEI\SYSTEM01.DBF'
idle> alter database open resetlogs;
alter database open resetlogs
*
第 1 行出现错误:
ORA-01194: 文件 1 需要更多的恢复来保持一致性
ORA-01110: 数据文件 1: 'E:\APP\XIFENFEI\ORADATA\XIFENFEI\SYSTEM01.DBF'
idle> alter system set "_allow_resetlogs_corruption"=true scope=spfile;
系统已更改。
idle> shutdown immediate
ORA-01109: 数据库未打开
已经卸载数据库。
ORACLE 例程已经关闭。
idle> startup mount;
ORACLE 例程已经启动。
Total System Global Area  400846848 bytes
Fixed Size                  2440024 bytes
Variable Size             289408168 bytes
Database Buffers          100663296 bytes
Redo Buffers                8335360 bytes
数据库装载完毕。
idle> recover database until cancel;
ORA-00279: 更改 2821739 (在 03/30/2014 20:58:39 生成) 对于线程 1 是必需的
ORA-00289: 建议:
E:\APP\XIFENFEI\FAST_RECOVERY_AREA\XIFENFEI\ARCHIVELOG\2014_03_30\O1_MF_1_36_%U_
.ARC
ORA-00280: 更改 2821739 (用于线程 1) 在序列 #36 中
指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
cancel
ORA-01547: 警告: RECOVER 成功但 OPEN RESETLOGS 将出现如下错误
ORA-01194: 文件 1 需要更多的恢复来保持一致性
ORA-01110: 数据文件 1: 'E:\APP\XIFENFEI\ORADATA\XIFENFEI\SYSTEM01.DBF'
ORA-01112: 未启动介质恢复
idle> alter database open resetlogs;
alter database open resetlogs
*
第 1 行出现错误:
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00600: internal error code, arguments: [2662], [0], [2821746], [0],
[2822649], [4194545], [], [], [], [], [], []
进程 ID: 6880
会话 ID: 242 序列号: 3
idle> startup mount;
SP2-0642: SQL*Plus 内部错误状态 2133, 上下文 3114:0:0
继续执行将不安全
ORA-03114: 未连接到 ORACLE
--使用bbed解决dul问题，出现新问题
idle> alter database open;
alter database open
*
第 1 行出现错误:
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00600: internal error code, arguments: [4194], [61], [4], [], [], [], [],
[], [], [], [], []
进程 ID: 5932
会话 ID: 242 序列号: 3
idle> ALTER SYSTEM SET UNDO_MANAGEMENT='MANAUL' SCOPE=SPFILE;
系统已更改。
idle> SHUTDOWN IMMEDIATE;
ORA-01109: 数据库未打开
已经卸载数据库。
ORACLE 例程已经关闭。
idle> startup mount;
ORACLE 例程已经启动。
Total System Global Area  400846848 bytes
Fixed Size                  2440024 bytes
Variable Size             281019560 bytes
Database Buffers          109051904 bytes
Redo Buffers                8335360 bytes
数据库装载完毕。
idle> alter database open;
数据库已更改。
[/sql
<strong>open pdb</strong>

idle> alter session set container=pdb1;
会话已更改。
idle> alter database open;
数据库已更改。
idle> alter session set container=pdb2;
会话已更改。
idle> alter database open;
数据库已更改。
idle> alter session set container=pdb1;
会话已更改。

ORACLE 12C的bug估计不会太少，急于上12C的朋友，强烈建议打上最先patch,少踩一些雷

ORACLE 12C创建CDB数据库脚本解析

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C创建CDB数据库脚本解析

对于ORACLE 12C 创建含pdb的脚本进行了初步的分析,欢迎一起探讨
ORACLE 12C创建CDB数据库脚本解析

ORACLE 12C redo异常恢复测试—部分pdb未正常open

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C redo异常恢复测试—部分pdb未正常open

为了验证当前redo丢失的情况下ORACLE 12C CDB数据库恢复的情况,做了一个小实验，三个会话，分别操作为在root pdb中执行一个delete 不提交；另外一个会话在user pdb中delete记录不提交；最后一个会话中直接abort数据库，然后进行数据库恢复，验证数据库是否可以都正常open(所有pdb)
会话1(root pdb中操作)

CDB_CDB$ROOT@SYS> show pdbs;
    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB                            READ WRITE NO
CDB_CDB$ROOT@SYS> show con_name
CON_NAME
------------------------------
CDB$ROOT
CDB_CDB$ROOT@SYS> create table t_xifenfei as select * from dba_objects;
表已创建。
CDB_CDB$ROOT@SYS> delete from t_xifenfei;
已删除 91032 行。
CDB_CDB$ROOT@SYS>

会话2(user pdb中操作)

CDB_CDB$ROOT@SYS> show con_name
CON_NAME
------------------------------
PDB
CDB_CDB$ROOT@SYS> drop table t_xifenfei purge;
表已删除。
CDB_CDB$ROOT@SYS> create table t_xifenfei as select * from dba_objects;
表已创建。
CDB_CDB$ROOT@SYS> delete from t_xifenfei;
已删除 91144 行。

会话3(直接abort数据库)

CDB_CDB$ROOT@SYS> shutdown abort;
ORACLE 例程已经关闭。

删除数据库联机日志

E:\app\XIFENFEI\oradata\cdb>dir redo*.log
 驱动器 E 中的卷是 本地磁盘
 卷的序列号是 000C-3B41
 E:\app\XIFENFEI\oradata\cdb 的目录
2013-08-07  01:41        52,429,312 REDO01.LOG
2013-08-07  01:40        52,429,312 REDO02.LOG
2013-08-07  01:40        52,429,312 REDO03.LOG
2014-03-20  22:47        52,432,896 REDO04.LOG
2014-03-20  22:47        52,432,896 REDO05.LOG
2014-03-20  22:47        52,432,896 REDO06.LOG
               6 个文件    314,586,624 字节
               0 个目录 21,359,374,336 可用字节
E:\app\XIFENFEI\oradata\cdb>del redo*.log
E:\app\XIFENFEI\oradata\cdb>dir redo*.log
 驱动器 E 中的卷是 本地磁盘
 卷的序列号是 000C-3B41
 E:\app\XIFENFEI\oradata\cdb 的目录
找不到文件

启动数据库报ORA-00313错误

idle> startup
ORACLE 例程已经启动。
Total System Global Area  521936896 bytes
Fixed Size                  2404552 bytes
Variable Size             205524792 bytes
Database Buffers          306184192 bytes
Redo Buffers                7823360 bytes
数据库装载完毕。
ORA-00313: 无法打开日志组 6 (用于线程 1) 的成员
ORA-00312: 联机日志 6 线程 1: 'E:\APP\XIFENFEI\ORADATA\CDB\REDO06.LOG'
ORA-27041: 无法打开文件
OSD-04002: 无法打开文件
O/S-Error: (OS 2) 系统找不到指定的文件。

使用_allow_resetlogs_corruption参数尝试open数据库

idle> shutdown abort
ORACLE 例程已经关闭。
idle> startup pfile='d:/pfile.txt' mount
ORACLE 例程已经启动。
Total System Global Area  521936896 bytes
Fixed Size                  2404552 bytes
Variable Size             205524792 bytes
Database Buffers          306184192 bytes
Redo Buffers                7823360 bytes
数据库装载完毕。
idle> show parameter resetlogs;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
_allow_resetlogs_corruption          boolean     TRUE
idle> recover database until cancel;
ORA-00279: 更改 12696935641735 (在 03/20/2014 22:38:52 生成) 对于线程 1
是必需的
ORA-00289: 建议:
E:\APP\XIFENFEI\FAST_RECOVERY_AREA\CDB\ARCHIVELOG\2014_03_20\O1_MF_1_872_9LOZSK9
X_.ARC
ORA-00280: 更改 12696935641735 (用于线程 1) 在序列 #872 中
指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
cancel
ORA-01547: 警告: RECOVER 成功但 OPEN RESETLOGS 将出现如下错误
ORA-01194: 文件 1 需要更多的恢复来保持一致性
ORA-01110: 数据文件 1: 'E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF'
ORA-01112: 未启动介质恢复
idle> alter database open resetlogs;
alter database open resetlogs
*
第 1 行出现错误:
ORA-00603: ORACLE server session terminated by fatal error
ORA-00600: internal error code, arguments: [2662], [2956], [1012314778],
[2956], [1012314903], [268435600], [], [], [], [], [], []
ORA-00600: internal error code, arguments: [2662], [2956], [1012314777],
[2956], [1012314903], [268435600], [], [], [], [], [], []
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00600: internal error code, arguments: [2662], [2956], [1012314768],
[2956], [1012314903], [268435600], [], [], [], [], [], []
进程 ID: 9268
会话 ID: 92 序列号: 3

ora-600[2662]很熟悉，文件头的scn小于文件中某个block的csn，通过bbed等工具修改文件scn，尝试启动数据库

CDB_CDB$ROOT@SYS> SHUTDOWN ABORT
ORACLE 例程已经关闭。
CDB_CDB$ROOT@SYS> STARTUP
ORACLE 例程已经启动。
Total System Global Area  521936896 bytes
Fixed Size                  2404552 bytes
Variable Size             205524792 bytes
Database Buffers          306184192 bytes
Redo Buffers                7823360 bytes
数据库装载完毕。
数据库已经打开。

尝试open user pdb

CDB_CDB$ROOT@SYS> alter session set container=pdb;
会话已更改。
CDB_CDB$ROOT@SYS> alter database open;
alter database open
*
第 1 行出现错误:
ORA-00600: 内部错误代码, 参数: [kcvfdb_pdb_set_clean_scn: cleanckpt], [3],
[2956], [1012312995], [2956], [1012334778], [2], [], [], [], [], []

查询mos得到结论:
Bug 16784143 ORA-600 [kcvfdb_pdb_set_clean_scn: cleanckpt] with PDBs
在12.2/12.1.0.2/12.1.0.1.1中修复，后续尝试打patch,来进一步恢复.

测试结果证明
1.root pdb的open过程和以前版本数据库无大差异,但是scn推进比较费劲,以前的event和隐含参数方法无效
2.user pdb再是看是因为bug无法open,后续继续验证
3.12.1的base 版本可能确实问题很多，生产使用慎重

ORACLE 12C 控制文件异常恢复

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C 控制文件异常恢复

在oracle 12c引进了pdb的概念,但重建控制文件的过程还是完全和no-cdb(以前版本ORACLE)相同
数据库启动异常

idle> startup
ORACLE instance started.
Total System Global Area  521936896 bytes
Fixed Size                  2404552 bytes
Variable Size             205524792 bytes
Database Buffers          306184192 bytes
Redo Buffers                7823360 bytes
ORA-00205: error in identifying control file, check alert log for more info
idle> select * from v$version;
BANNER                                                                               CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production              0
PL/SQL Release 12.1.0.1.0 - Production                                                    0
CORE    12.1.0.1.0      Production                                                        0
TNS for 64-bit Windows: Version 12.1.0.1.0 - Production                                   0
NLSRTL Version 12.1.0.1.0 - Production                                                    0

alert日志信息

Wed Mar 19 20:30:20 2014
ALTER DATABASE   MOUNT
Wed Mar 19 20:30:20 2014
ORA-00210: ???????????
ORA-00202: ????: ''E:\APP\XIFENFEI\ORADATA\CDB\CONTROL01.CTL''
ORA-27048: skgfifi: ????????
OSD-04001: 逻辑块大小无效
ORA-205 signalled during: ALTER DATABASE   MOUNT...

利用strings命令找出来数据文件和联机日志路径

E:\APP\XIFENFEI\ORADATA\CDB\REDO04.LOG
E:\APP\XIFENFEI\ORADATA\CDB\REDO06.LOG
E:\APP\XIFENFEI\ORADATA\CDB\REDO05.LOG
E:\APP\XIFENFEI\ORADATA\CDB\PDB\PDB_USERS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\USERS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\UNDOTBS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\TEMP01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\TEMP01.DBF

如果有完整的alert日志也可以通过alert日志来分析数据文件路径和redo路径;
通过alert日志分析数据库编码,如果没有alert日志通过分析prop$分析编码;
redo group 可以在alert日志中查看,写入错误,在创建时候会提示正确值;
redo size 可以查看redo file,也可以先写入错误值,创建时候会提示正确block数量

重建控制文件

idle> CREATE CONTROLFILE REUSE DATABASE "CDB" NORESETLOGS FORCE LOGGING ARCHIVELOG
  2      MAXLOGFILES 16
  3      MAXLOGMEMBERS 3
  4      MAXDATAFILES 100
  5      MAXINSTANCES 8
  6      MAXLOGHISTORY 2921
  7  LOGFILE
  8  GROUP 4 'E:\APP\XIFENFEI\ORADATA\CDB\REDO04.LOG' size 50M,
  9  GROUP 6 'E:\APP\XIFENFEI\ORADATA\CDB\REDO06.LOG'  size 50M,
 10  GROUP 5 'E:\APP\XIFENFEI\ORADATA\CDB\REDO05.LOG'  size 50M
 11  DATAFILE
 12  'E:\APP\XIFENFEI\ORADATA\CDB\PDB\PDB_USERS01.DBF',
 13  'E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSAUX01.DBF',
 14  'E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSTEM01.DBF',
 15  'E:\APP\XIFENFEI\ORADATA\CDB\UNDOTBS01.DBF',
 16  'E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSAUX01.DBF',
 17  'E:\APP\XIFENFEI\ORADATA\CDB\SYSAUX01.DBF',
 18  'E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSTEM01.DBF',
 19  'E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF',
 20  'E:\APP\XIFENFEI\ORADATA\CDB\USERS01.DBF'
 21  CHARACTER SET ZHS16GBK
 22  ;
控制文件已创建。
idle> recover database;
完成介质恢复。
idle> alter database open;
数据库已更改。
idle> show pdbs;
    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB                            MOUNTED
idle> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\USERS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\PDB_USERS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\UNDOTBS01.DBF
已选择 9 行。
CDB_CDB$ROOT@SYS> alter session set container=pdb;
Session altered.
CDB_CDB$ROOT@SYS> alter database open;
Database altered.

数据库在mount状态重建控制文件请参考:重建控制文件

ORACLE 12C RAC主要gc等待事件

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C RAC主要gc等待事件

ORACLE 12C RAC中有很多GC等待事件,这里重点介绍一些常见的GC等待事件,以便在以后遇到类似问题方便分析

RAC等待事件

在本节中我将讨论重要的RAC等待事件。这还不是全部等待事件的完整列表，只是一个最常见的等待事件的列表。

GC当前块2-Way/3-Way

当前块的等待事件意味着被传输的块的版本是块的最新版本。这个等待事件读取和写入活动中都可能遇到。如果该块被访问是以读取活动进行，那么该资源上锁以KJUSERPR（PR）模式获得。刚才我在“资源和锁定”一节中所讨论的示例展示了KJUSERPR模式的锁。
在下面的例子中，我从表t_one中查询一行，造成连接到节点2的磁盘读。查看SQL跟踪文件，没有全局缓存等待事件。原因是该块被本地掌控（本地实例是master），所以FG进程中可直接获取该资源上锁，而不会产生任何全局缓存等待。这种类型的锁也被称为亲和力锁定（相似度锁定）方案。动态掌握资源（DRM，Dynamic Resource Mastering）的部分将详细讨论相似度锁定（亲和力锁定）。
RS@ORCL2:2> @tc_one_row.sql
N1 FNO BLOCK OBJ V1
———- ———- ———- ———- ———-
100 4 180 75742 250
Trace file:
nam=’db file sequential read’ ela= 563 file#=4 block#=180 blocks=1 obj#=75742
我连接到实例1（注释5）查询同一行数据。由于该块已经缓存在实例2，因此该块从实例2传输到实例1。跟踪显示，等待事件gc current block 2-way由于file_id=4，BLOCK_ID=180块而被遇到了。这个块传输是一个两路的块传输，因为该资源的拥有实例和资源主实例（实例2）是相同的。
SYS@ORCL1:1> @tc_one_row.sql
N1 FNO BLOCK OBJ V1
———- ———- ———- ———- ———-
100 4 180 75742 250
Trace file:
nam=’gc current block 2-way’ ela= 629 p1=4 p2=180 p3=1 obj#=75742 tim=1350440823837572
接下来，我将创建一个3路等待事件的条件，但首先让我在所有三个实例上刷新缓冲区，开始用干净的缓冲区。在以下示例中：
1．我将连接到实例1查询（这将加载块到实例1的缓冲区高速缓存中）这行数据。
2．我将连接到一个实例，并从实例3查询同一行。我会话的FG进程将为这一数据块请求运行在实例2上的LMS进程（因为实例2是该资源的掌控者）。
3．实例2的LMS进程将请求转发给实例1的LMS进程。
4．实例1的LMS进程将发送块给运行在实例3上的FG进程。
从本质上讲，三个实例参与一个数据块的传输，因此，这是一个三路块传输。
–alter system flush buffer_cache; –在所有实例上
RS@ORCL1:1> @tc_one_row.sql
N1 FNO BLOCK OBJ V1
———- ———- ———- ———- ———-
100 4 180 75742 250
RS@ORCL3:3> @tc_one_row.sql
N1 FNO BLOCK OBJ V1
———- ———- ———- ———- ———-
100 4 180 75742 250
Trace file:
nam=’gc current block 3-way’ ela= 798 p1=4 p2=180 p3=1 obj#=75742
连接到实例2查看资源锁，我们看到在该资源上有两个锁被持，分别是实例1和实例3（owner_node等于0和2）。
RS@ORCL2:2> SELECT resource_name1, grant_level, state, owner_node
FROM v$ges_enqueue
WHERE resource_name1 LIKE ‘[0xb4][0x4],[BL]%’;
RESOURCE_NAME1 GRANT_LEV STATE OWNER_NODE
—————————— ——— ————- ———-
[0xb4][0x4],[BL][ext 0x0,0x0] KJUSERPR GRANTED 2
[0xb4][0x4],[BL][ext 0x0,0x0] KJUSERPR GRANTED 0
在gc current block 2-way or gc current block 3-way等待事件上的过多等待，通常要么是由于（a）一种低效的执行计划，导致了大量的块访问，或者（b）应用数据相似度（应用亲和力）没有被实施。如果对象访问本地化，考虑实施应用亲和力（应用数据的相似度）。此外，使用前面一节中讨论的技术“所有等待事件的通用分析”。

GC CR Block 2-Way/3-Way

CR模式的块传输发生在只读访问的请求中。考虑这样一个场景：一个块以CURRENT模式驻留在实例2上，实例2以独占模式保持了该资源的BL锁。另一个会话连接到实例1来请求该块，阻止。由于Oracle数据库中“其他人看不到未提交的更改”，SELECT语句请求一个查询开始时间的块的特定版本。SCN被用于标识块版本，本质上，SELECT语句请求的版本与块的SCN一致。LMS进程维护实例2的请求，以CURRENT的模式克隆该块到缓冲区，验证SCN版本与请求是一致的，然后发送该块的CR拷贝给FG进程。
这些CR模式传输和CURRENT模式传输之间的主要区别在于，在CR模式传输的情况下，在GRD中没有资源或锁来维护CR缓冲区。从本质上讲，CR模式块不需要全局缓存资源或锁。接收到的CR副本只能由提出请求的会话使用，并且只适用于这个特定的SQL执行中。这就是为什么Oracle数据库不对CR传输获取BL资源的任何锁。
由于没有全局缓存锁保护缓冲区，连接到实例1再次执行这个SQL语句访问那个块时将遭遇gc cr block 2-way 或者 gc cr block 3-way等待事件。
因此，每次从实例1访问该块都将触发新CR缓冲区的构造。即使在实例2的缓冲区没有发生该块修改，在实例1中的FG进程仍然会遭遇到CR等待事件。驻留在实例1的CR缓冲区是不能重复使用的，因为每SQL执行请求查询时的SCN会有所不同。
下面的跟踪显示了一个块从资源主实例以0.6毫秒的延迟被传输到请求实例。另外，file_id，BLOCK_ID，和跟踪文件中的object_id信息，可以被用来识别正在遭遇这两个等待事件的对象。当然，也可以通过查询ASH数据来识别该对象。
nam=’gc cr block 2-way’ ela= 627 p1=7 p2=6852 p3=1 obj#=76483 tim=37221074057
执行tc_one_row.sql五次，然后查询缓冲区头信息后，你可以看到在两个实例1和2有五个该块的CR缓冲区。请注意，CR_SCN_BAS和CR_SCN_WRP 列（注释6）显示了每个CR缓冲副本不同的值。查询GV$ ges_resource和GV$ ges_enqueue，你也可以看到有没有GC锁保护这些缓冲区。
清单10-10 缓冲区状态

SELECT

DECODE(state,0,’free’,1,’xcur’,2,’scur’,3,’cr’, 4,’read’,5,’mrec’,

6,’irec’,7,’write’,8,’pi’, 9,’memory’,10,’mwrite’,

11,’donated’, 12,’protected’, 13,’securefile’, 14,’siop’,

15,’recckpt’, 16, ‘flashfree’, 17, ‘flashcur’, 18, ‘flashna’) state,

mode_held, le_addr, dbarfil, dbablk, cr_scn_bas, cr_scn_wrp , class

FROM sys.x$bh

WHERE obj= &&obj

AND dbablk= &&block

AND state!=0 ;

Enter value for obj: 75742

Enter value for block: 180

STATE MODE_HELD LE DBARFIL DBABLK CR_SCN_BAS CR_SCN_WRP CLASS

———- ———- — ————– ———- ———- ———- ———-

cr 0 00 1 75742 649314930 3015 1

cr 0 00 1 75742 648947873 3015 1

cr 0 00 1 75742 648926281 3015 1

cr 0 00 1 75742 648810300 3015 1

cr 0 00 1 75742 1177328436 3013 1
CR缓冲区的创建是一个特例，它并不需要获取全局缓存锁来保护CR缓冲区。如果频繁访问的对象上有长时间未提交的事物就可能会出现CR风暴。因此，明智的做法是把更新大量表数据的批处理安排在一个不太繁忙的时间段。

GC CR Grant 2-Way/Gc Current Grant 2-Way

如果被请求的块没有驻留在任何缓冲区中，就会遭遇gc cr grant 2-way 和 gc current grant 2-way等待事件。FG进程向LMS进程请求一个块，但块没有驻留在任何缓冲区。因此，LMS进程回复一条授权FG进程从磁盘读取的块的消息。FG进程从磁盘读取该块并继续后续的处理。
下面一行显示了为了访问file_id=4和lock_id=180数据块，FG进程接收到来自LMS进程的授权响应。下一行显示了，执行了一个从磁盘读取块的物理读。
nam=’gc cr grant 2-way’ ela= 402 p1=4 p2=180 p3=1 obj#=75742
nam=’db file sequential read’ ela= 553 file#=4 block#=180 blocks=1 obj#=75742
过多的此类等待意味着，要么缓冲区高速缓存太小，要么SQL语句的执行过分的刷新了缓冲区高速缓存。识别正在遭遇此类等待事件的SQL语句和对象，并优化这些SQL语句。
DRM功能的设计就是为了减少发生这类授权相关的等待事件。

GC CR Block Busy/GC Current Block Busy

繁忙事件（Busy events）表明，LMS执行了额外的工作去处理并发相关的问题。例如，要建立一个CR块，LMS进程可能要应用撤消记录（undo records），重构一个与查询的SCN一致的块。在把该块回传给FG过程时，LMS将标记块传输是否遇到gc cr block busy或gc current block busy等待事件，这取决于块传输的类型。

GC CR Block Congested/GC Current Block Congested

如果LMS进程在接收到请求后没有在1毫秒内处理该请求，那么LMS进程标记这个响应为：该块正遭遇拥堵相关的等待事件。堵塞相关的等待事件有很多原因，比如说，LMS进程被大量全局高速缓存的请求所淹没。LMS进程正遭遇CPU的调度延迟，LMS进程已经遇到了另一种资源耗尽（如内存）等。
通常情况下，LMS进程运行在实时CPU调度优先级，因此，CPU调度的延迟将是最小的。大量这类的等待此事件表明出现了全局缓存请求的突然飙升，且LMS进程无法快速处理这些请求。服务器内存匮乏也可能导致LMS进程的分页，影响全局缓存的性能。
您可以去检查为什么LMS进程不能够有效地处理请求。

ORACLE 12C RAC hub AND leaf 相互转换

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C RAC hub AND leaf 相互转换

感谢Lunar的指导,完成ORACLE 12C RAC hub和leaf相互转换,参考官方文档Oracle Flex Clusters部分
当前数据库状态

--集群状态
[root@rac1 ~]# crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.DATA.dg
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.SYSDB_NEW.dg
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.SYSDG.dg
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.net1.network
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.ons
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.proxy_advm
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       rac1                     STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       rac2                     169.254.177.226 10.1
                                                             .1.104,STABLE
ora.asm
      1        ONLINE  ONLINE       rac1                     STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cvu
      1        ONLINE  ONLINE       rac2                     STABLE
ora.gns
      1        ONLINE  ONLINE       rac2                     STABLE
ora.gns.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.mgmtdb
      1        ONLINE  ONLINE       rac2                     Open,STABLE
ora.oc4j
      1        ONLINE  ONLINE       rac2                     STABLE
ora.ora12c.db
      1        ONLINE  ONLINE       rac1                     Open,STABLE
      2        ONLINE  ONLINE       rac2                     Open,STABLE
ora.rac1.vip
      1        ONLINE  ONLINE       rac1                     STABLE
ora.rac2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       rac1                     STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
--rac运行在flex模式
[root@rac1 ~]#  crsctl get cluster mode status
Cluster is running in "flex" mode
--asm运行在flex模式
[grid@rac1 ~]$ asmcmd
ASMCMD> showclustermode
ASM cluster : Flex mode enabled
--节点角色
[root@rac1 ~]# crsctl get node role config
Node 'rac1' configured role is 'hub'
[root@rac2 ~]# crsctl get node role config
Node 'rac2' configured role is 'hub'

转换hub to leaf

--转换hub为leaf
[root@rac1 ~]# crsctl set node role leaf
CRS-4408: Node 'rac1' configured role successfully changed; restart Oracle High Availability Services for new role to take effect.
--关闭集群
[root@rac1 ~]# crsctl stop crs
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'rac1'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'rac1'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'rac1'
CRS-2673: Attempting to stop 'ora.SYSDB_NEW.dg' on 'rac1'
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'rac1'
CRS-2673: Attempting to stop 'ora.SYSDG.dg' on 'rac1'
CRS-2673: Attempting to stop 'ora.ora12c.db' on 'rac1'
CRS-2673: Attempting to stop 'ora.proxy_advm' on 'rac1'
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.rac1.vip' on 'rac1'
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'rac1'
CRS-2677: Stop of 'ora.rac1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.rac1.vip' on 'rac2'
CRS-2677: Stop of 'ora.ora12c.db' on 'rac1' succeeded
CRS-2677: Stop of 'ora.scan1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.scan1.vip' on 'rac2'
CRS-2676: Start of 'ora.rac1.vip' on 'rac2' succeeded
CRS-2677: Stop of 'ora.SYSDB_NEW.dg' on 'rac1' succeeded
CRS-2676: Start of 'ora.scan1.vip' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN1.lsnr' on 'rac2'
CRS-2677: Stop of 'ora.DATA.dg' on 'rac1' succeeded
CRS-2677: Stop of 'ora.SYSDG.dg' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'rac1'
CRS-2677: Stop of 'ora.asm' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1'
CRS-2676: Start of 'ora.LISTENER_SCAN1.lsnr' on 'rac2' succeeded
CRS-2677: Stop of 'ora.proxy_advm' on 'rac1' succeeded
CRS-2677: Stop of 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.ons' on 'rac1'
CRS-2677: Stop of 'ora.ons' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'rac1'
CRS-2677: Stop of 'ora.net1.network' on 'rac1' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'rac1' has completed
CRS-2677: Stop of 'ora.crsd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'rac1'
CRS-2673: Attempting to stop 'ora.crf' on 'rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'rac1'
CRS-2677: Stop of 'ora.storage' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'rac1'
CRS-2677: Stop of 'ora.drivers.acfs' on 'rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'rac1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.asm' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'rac1'
CRS-2677: Stop of 'ora.evmd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'rac1'
CRS-2677: Stop of 'ora.cssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'rac1'
CRS-2677: Stop of 'ora.gipcd' on 'rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
--启动集群
[root@rac1 ~]# crsctl start crs -wait
CRS-4123: Starting Oracle High Availability Services-managed resources
CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
CRS-2672: Attempting to start 'ora.evmd' on 'rac1'
CRS-2676: Start of 'ora.evmd' on 'rac1' succeeded
CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
CRS-2789: Cannot stop resource 'ora.diskmon' as it is not running on server 'rac1'
CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.storage' on 'rac1'
CRS-2676: Start of 'ora.storage' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crf' on 'rac1'
CRS-2676: Start of 'ora.crf' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'rac1'
CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded
CRS-6017: Processing resource auto-start for servers: rac1
CRS-6016: Resource auto-start has completed for server rac1
CRS-6024: Completed start of Oracle Cluster Ready Services-managed resources
CRS-4123: Oracle High Availability Services has been started.
--hub转换为leaf后状态
[root@rac1 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       rac2                     STABLE
ora.DATA.dg
               ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       rac2                     STABLE
ora.SYSDB_NEW.dg
               ONLINE  ONLINE       rac2                     STABLE
ora.SYSDG.dg
               ONLINE  ONLINE       rac2                     STABLE
ora.net1.network
               ONLINE  ONLINE       rac2                     STABLE
ora.ons
               ONLINE  ONLINE       rac2                     STABLE
ora.proxy_advm
               ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       rac2                     169.254.177.226 10.1
                                                             .1.104,STABLE
ora.asm
      1        ONLINE  OFFLINE                               STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cvu
      1        ONLINE  ONLINE       rac2                     STABLE
ora.gns
      1        ONLINE  ONLINE       rac2                     STABLE
ora.gns.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.mgmtdb
      1        ONLINE  ONLINE       rac2                     Open,STABLE
ora.oc4j
      1        ONLINE  ONLINE       rac2                     STABLE
ora.ora12c.db
      1        ONLINE  OFFLINE                               Instance Shutdown,ST
                                                             ABLE
      2        ONLINE  ONLINE       rac2                     Open,STABLE
ora.rac1.vip
      1        ONLINE  INTERMEDIATE rac2                     FAILED OVER,STABLE
ora.rac2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
--集群角色
[root@rac1 ~]# crsctl get node role config
Node 'rac1' configured role is 'leaf'
[root@rac2 ~]# crsctl get node role config
Node 'rac2' configured role is 'hub'

leaf转换为hub

--leaf转换为hub
[root@rac1 ~]# crsctl set node role hub
CRS-4408: Node 'rac1' configured role successfully changed; restart Oracle High Availability Services for new role to take effect.
--关闭集群
[root@rac1 ~]# crsctl stop crs
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'rac1'
CRS-2677: Stop of 'ora.crsd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'rac1'
CRS-2677: Stop of 'ora.storage' on 'rac1' succeeded
CRS-2677: Stop of 'ora.drivers.acfs' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.crf' on 'rac1'
CRS-2673: Attempting to stop 'ora.ctssd' on 'rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'rac1'
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'rac1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'rac1'
CRS-2677: Stop of 'ora.cssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'rac1'
CRS-2677: Stop of 'ora.gipcd' on 'rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
--启动集群
[root@rac1 ~]# crsctl start crs -wait
CRS-4123: Starting Oracle High Availability Services-managed resources
CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
CRS-2672: Attempting to start 'ora.evmd' on 'rac1'
CRS-2676: Start of 'ora.evmd' on 'rac1' succeeded
CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
CRS-2789: Cannot stop resource 'ora.diskmon' as it is not running on server 'rac1'
CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'rac1'
CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.storage' on 'rac1'
CRS-2676: Start of 'ora.storage' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crf' on 'rac1'
CRS-2676: Start of 'ora.crf' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'rac1'
CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded
CRS-6017: Processing resource auto-start for servers: rac1
CRS-2672: Attempting to start 'ora.ons' on 'rac1'
CRS-2673: Attempting to stop 'ora.rac1.vip' on 'rac2'
CRS-2672: Attempting to start 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'rac2'
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'rac2' succeeded
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'rac2'
CRS-2677: Stop of 'ora.rac1.vip' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.rac1.vip' on 'rac1'
CRS-2677: Stop of 'ora.scan1.vip' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.scan1.vip' on 'rac1'
CRS-2676: Start of 'ora.rac1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER.lsnr' on 'rac1'
CRS-2676: Start of 'ora.scan1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN1.lsnr' on 'rac1'
CRS-2676: Start of 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1' succeeded
CRS-2676: Start of 'ora.ons' on 'rac1' succeeded
CRS-2676: Start of 'ora.LISTENER.lsnr' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'rac1'
CRS-2676: Start of 'ora.LISTENER_SCAN1.lsnr' on 'rac1' succeeded
CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.proxy_advm' on 'rac1'
CRS-2676: Start of 'ora.proxy_advm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.ora12c.db' on 'rac1'
CRS-2676: Start of 'ora.ora12c.db' on 'rac1' succeeded
CRS-6016: Resource auto-start has completed for server rac1
CRS-6024: Completed start of Oracle Cluster Ready Services-managed resources
CRS-4123: Oracle High Availability Services has been started.
--集群状态
[root@rac1 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.DATA.dg
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.SYSDB_NEW.dg
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.SYSDG.dg
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.net1.network
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.ons
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.proxy_advm
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       rac1                     STABLE
ora.LISTENER_SCAN2.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER_SCAN3.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       rac2                     169.254.177.226 10.1
                                                             .1.104,STABLE
ora.asm
      1        ONLINE  ONLINE       rac1                     STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cvu
      1        ONLINE  ONLINE       rac2                     STABLE
ora.gns
      1        ONLINE  ONLINE       rac2                     STABLE
ora.gns.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.mgmtdb
      1        ONLINE  ONLINE       rac2                     Open,STABLE
ora.oc4j
      1        ONLINE  ONLINE       rac2                     STABLE
ora.ora12c.db
      1        ONLINE  ONLINE       rac1                     Open,STABLE
      2        ONLINE  ONLINE       rac2                     Open,STABLE
ora.rac1.vip
      1        ONLINE  ONLINE       rac1                     STABLE
ora.rac2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       rac1                     STABLE
ora.scan2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan3.vip
      1        ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
--集群角色
[root@rac1 ~]# crsctl get node role config
Node 'rac1' configured role is 'hub'
[root@rac2 ~]# crsctl get node role config
Node 'rac2' configured role is 'hub'

这里实现了ORACLE 12C RAC的leaf和hub 角色相互转换,在转换的过程中需要转移确认集群和ASM均为flex mode,如果参考相关文档完成转换

ORACLE 12C RAC修改ocr/votedisk/asm spfile所在磁盘组名称

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C RAC修改ocr/votedisk/asm spfile所在磁盘组名称

今天看着我这个单节点的12C rac,突然觉得ocr所在的磁盘组叫做+DG_SYS有点不舒服，想改成+SYS_DG。处理方法是先把ocr/votedisk/asm spfile迁移到已经存在的asm中,然后修改磁盘组名称,最后迁移到新名称磁盘组中(本次处理流程+DG_SYS—>+DATA—>+SYS_DG)
当前运行情况

[grid@xifenfei ~]$ crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------
SQL> select * from v$version;
BANNER                                                                               CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production              0
PL/SQL Release 12.1.0.1.0 - Production                                                    0
CORE    12.1.0.1.0      Production                                                                0
TNS for Linux: Version 12.1.0.1.0 - Production                                            0
NLSRTL Version 12.1.0.1.0 - Production                                                    0
SQL> select name,state from v$asm_diskgroup;
NAME                           STATE
------------------------------ -----------
DG_SYS                         MOUNTED
DATA                           MOUNTED
[grid@xifenfei ~]$ crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   60a037da30714f6bbfe5d90206ff27a7 (/dev/sdc2) [DG_SYS]
Located 1 voting disk(s).
[grid@xifenfei ~]$ ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :    +DG_SYS
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
         Cluster registry integrity check succeeded
         Logical corruption check bypassed due to non-privileged user
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DG_SYS/xff-cluster/ASMPARAMET
                                                 ERFILE/registry.253.825640465

修改ocr路径
ocrconfig -add和ocrconfig -delete完成ocr更换磁盘组,该过程可以在线处理

[root@xifenfei ~]# ocrconfig -add +data
--alert 日志
2013-09-09 22:32:40.799:
[crsd(5064)]CRS-1007:The OCR/OCR mirror location was replaced by +data.
[root@xifenfei ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :    +DG_SYS
                                    Device/File integrity check succeeded
         Device/File Name         :      +data
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
         Cluster registry integrity check succeeded
[root@xifenfei ~]# ocrconfig -delete +DG_SYS
--alert 日志
2013-09-09 22:35:53.585:
[crsd(5064)]CRS-1010:The OCR mirror location +DG_SYS was removed.
[root@xifenfei ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :      +data
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
         Cluster registry integrity check succeeded
         Logical corruption check succeeded

修改votedisk路径
通过crsctl replace votedisk命令修改

[root@xifenfei ~]# crsctl replace votedisk +DATA
Successful addition of voting disk 161ddea0a5fe4f28bfb67536e6105122.
Successful deletion of voting disk 60a037da30714f6bbfe5d90206ff27a7.
Successfully replaced voting disk group with +DATA.
CRS-4266: Voting file(s) successfully replaced
-alert日志
2013-09-09 22:38:15.259:
[cssd(4685)]CRS-1605:CSSD voting file is online: /dev/sdb; details in /u01/app/12.1/grid/product/log/xifenfei/cssd/ocssd.log.
2013-09-09 22:38:15.259:
[cssd(4685)]CRS-1626:A Configuration change request completed successfully
2013-09-09 22:38:15.285:
[cssd(4685)]CRS-1601:CSSD Reconfiguration complete. Active nodes are xifenfei .
[root@xifenfei ~]# crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   161ddea0a5fe4f28bfb67536e6105122 (/dev/sdb) [DATA]
Located 1 voting disk(s).

修改asm spfile位置

[grid@xifenfei ~]$  gpnptool get -o-
Success.
…………
<orcl:ASM-Profile id="asm" DiscoveryString="/dev/sd*" SPFile="+DG_SYS/xff-cluster/ASMPARAMETERFILE/registry.253.825640465" Mode="legacy"/>
…………
[grid@xifenfei ~]$ sqlplus / as sysasm
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 22:42:05 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> create pfile='/tmp/pfile.asm' from spfile;
File created.
SQL> create spfile='+DATA' FROM PFILE='/tmp/pfile.asm';
File created.
[grid@xifenfei ~]$  gpnptool get -o-
Success.
…………
<orcl:ASM-Profile id="asm" DiscoveryString="/dev/sd*" SPFile="+DATA/xff-cluster/ASMPARAMETERFILE/registry.253.825720159" Mode="legacy"/>
…………

这里证明create asm spfile会自动修改spfile在gpnptool对应的profile里面的配置,无需人工干预

重启crs
为了使得asm使用新的磁盘组中的spfile文件

[root@xifenfei ~]# crsctl stop crs
[root@xifenfei ~]# crsctl start crs

验证+DG_SYS磁盘组未被使用

[grid@xifenfei ~]$ sqlplus / as sysasm
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 22:59:49 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DATA/xff-cluster/ASMPARAMETER
                                                 FILE/registry.253.825720159
ASMCMD> lsof
DB_Name  Instance_Name  Path
+ASM     +ASM1          +DATA.255.819326577
cdb      cdb1           +DATA/CDB/CONTROLFILE/current.274.819356503
cdb      cdb1           +DATA/CDB/DATAFILE/sysaux.278.819355829
cdb      cdb1           +DATA/CDB/DATAFILE/system.269.819356101
cdb      cdb1           +DATA/CDB/DATAFILE/undotbs1.276.819356317
cdb      cdb1           +DATA/CDB/DATAFILE/users.279.819356309
cdb      cdb1           +DATA/CDB/DD7C48AA5A4404A2E04325AAE80A403C/DATAFILE/pdbseed_temp01.dbf
cdb      cdb1           +DATA/CDB/DD7C48AA5A4404A2E04325AAE80A403C/DATAFILE/sysaux.272.819356709
cdb      cdb1           +DATA/CDB/DD7C48AA5A4404A2E04325AAE80A403C/DATAFILE/system.271.819356709
cdb      cdb1           +DATA/CDB/ONLINELOG/group_1.277.822736453
cdb      cdb1           +DATA/CDB/ONLINELOG/group_2.280.822736461
cdb      cdb1           +DATA/CDB/ONLINELOG/group_3.275.822736397
cdb      cdb1           +DATA/CDB/TEMPFILE/temp.273.819356649

dismount +DG_SYS磁盘组

ASMCMD> lsdg
State    Type    Rebal  Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Voting_files  Name
MOUNTED  EXTERN  N         512   4096  1048576     20480     3369                0            3369              0             Y  DATA/
MOUNTED  EXTERN  N         512   4096  1048576      5451     5231                0            5231              0             N  DG_SYS/
ASMCMD> umount dg_sys
ASMCMD> lsdg
State    Type    Rebal  Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Voting_files  Name
MOUNTED  EXTERN  N         512   4096  1048576     20480     3369                0            3369              0             Y  DATA/

修改asm dg名称
修改磁盘组+DG_SYS为+SYS_DG

[grid@xifenfei ~]$ renamedg phase=both dgname=DG_SYS newdgname=SYS_DG verbose=true
Parsing parameters..
Parameters in effect:
         Old DG name       : DG_SYS
         New DG name          : SYS_DG
         Phases               :
                 Phase 1
                 Phase 2
         Discovery str        : (null)
         Clean              : TRUE
         Raw only           : TRUE
renamedg operation: phase=both dgname=DG_SYS newdgname=SYS_DG verbose=true
Executing phase 1
Discovering the group
Performing discovery with string:
Identified disk UFS:/dev/sdc2 with disk number:0 and timestamp (32990496 1727895552)
Checking for hearbeat...
Re-discovering the group
Performing discovery with string:
Identified disk UFS:/dev/sdc2 with disk number:0 and timestamp (32990496 1727895552)
Checking if the diskgroup is mounted or used by CSS
Checking disk number:0
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for /dev/sdc2
Modifying the header
Completed phase 2
Terminating kgfd context 0x7fceeb02a0a0

mount +SYS_DG

SQL> select name,state from v$asm_diskgroup;
NAME                           STATE
------------------------------ -----------
DATA                           MOUNTED
SYS_DG                         DISMOUNTED
SQL> alter diskgroup sys_dg mount;
Diskgroup altered.
SQL>  select name,state from v$asm_diskgroup;
NAME                           STATE
------------------------------ -----------
DATA                           MOUNTED
SYS_DG                         MOUNTED

asm spfile/ocr/votedisk迁移从+DATA到+SYS_DG

SQL> create spfile='+SYS_DG' FROM pfile='/tmp/pfile.asm';
File created.
[root@xifenfei ~]# ocrconfig -add +SYS_DG
[root@xifenfei ~]# ocrconfig -DELETE +DATA
[root@xifenfei ~]# crsctl replace votedisk +SYS_DG
Successful addition of voting disk 9694a31053ea4ff4bfb57891461a1296.
Successful deletion of voting disk 161ddea0a5fe4f28bfb67536e6105122.
Successfully replaced voting disk group with +SYS_DG.
CRS-4266: Voting file(s) successfully replaced
[root@xifenfei ~]# crsctl stop crs
[root@xifenfei ~]# crsctl start crs

删除ocr里面老磁盘组(+DG_SYS)信息

[root@xifenfei ~]# crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DG_SYS.dg
               ONLINE  OFFLINE      xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.SYS_DG.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------
[root@xifenfei ~]# srvctl remove diskgroup -diskgroup dg_sys
[root@xifenfei ~]# crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.SYS_DG.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------

至此ocr/votedisk/asm spfile所在磁盘组修改名称完成,因为该库是一个单节点的rac,如果是两个或者更多节点的rac可以实现不停机的情况下进行(分步重启节点).该处理过程和11.2 rac完全相同,未有任何的改变

oracle 12.1 RAC的ocr磁盘组异常恢复

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：oracle 12.1 RAC的ocr磁盘组异常恢复

在11.2或者12.1的RAC中,ocr和votedisk可以放到asm中,而很多人安装系统把ocr和votedisk放到一个单独的asm 磁盘组里面,但是如果这个磁盘组坏了,而数据所在的磁盘组是好的,这个时候该怎么恢复呢？这里的恢复分两种情况，一种是有ocr备份的恢复,另外一种是无ocr备份的恢复。但是在一般情况下ocr是每4个小时自动备份一份，因此大部分的系统中都会有ocr的备份。本blog主要对于oracle 12c rac在有ocr备份，存储ocr,votedisk的asm磁盘组异常恢复
确定ocr,votedisk,asm spfile存在一个独立asm diskgroup中

[grid@xifenfei ~]$ ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1360
         Available space (kbytes) :     408208
         ID                       : 2132096904
         Device/File Name         :    +DG_SYS
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
         Cluster registry integrity check succeeded
         Logical corruption check bypassed due to non-privileged user
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DG_SYS/xff-cluster/ASMPARAMET
                                                 ERFILE/registry.253.825628977
[grid@xifenfei ~]$ crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   3e20d13ae98a4fcfbffa489ab4df68a3 (/dev/sdc2) [DG_SYS]
Located 1 voting disk(s).
ASMCMD>  lsdsk -t -G dg_sys
Create_Date  Mount_Date  Repair_Timer  Path
08-SEP-13    08-SEP-13   0             /dev/sdc2

查看当前rac状态

[grid@xifenfei ~]$ crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------

kfed查看磁盘头

[grid@xifenfei ~]$ kfed read /dev/sdc2
kfbh.endian:                          1 ; 0x000: 0x01
kfbh.hard:                          130 ; 0x001: 0x82
kfbh.type:                            1 ; 0x002: KFBTYP_DISKHEAD
kfbh.datfmt:                          1 ; 0x003: 0x01
kfbh.block.blk:                       0 ; 0x004: blk=0
kfbh.block.obj:              2147483648 ; 0x008: disk=0
kfbh.check:                  2879801080 ; 0x00c: 0xaba646f8
kfbh.fcn.base:                        0 ; 0x010: 0x00000000
kfbh.fcn.wrap:                        0 ; 0x014: 0x00000000
kfbh.spare1:                          0 ; 0x018: 0x00000000
kfbh.spare2:                          0 ; 0x01c: 0x00000000
kfdhdb.driver.provstr:         ORCLDISK ; 0x000: length=8
kfdhdb.driver.reserved[0]:            0 ; 0x008: 0x00000000
kfdhdb.driver.reserved[1]:            0 ; 0x00c: 0x00000000
kfdhdb.driver.reserved[2]:            0 ; 0x010: 0x00000000
kfdhdb.driver.reserved[3]:            0 ; 0x014: 0x00000000
kfdhdb.driver.reserved[4]:            0 ; 0x018: 0x00000000
kfdhdb.driver.reserved[5]:            0 ; 0x01c: 0x00000000
kfdhdb.compat:                202375168 ; 0x020: 0x0c100000
kfdhdb.dsknum:                        0 ; 0x024: 0x0000
kfdhdb.grptyp:                        1 ; 0x026: KFDGTP_EXTERNAL
kfdhdb.hdrsts:                        3 ; 0x027: KFDHDR_MEMBER
kfdhdb.dskname:             DG_SYS_0000 ; 0x028: length=11
kfdhdb.grpname:                  DG_SYS ; 0x048: length=6
kfdhdb.fgname:              DG_SYS_0000 ; 0x068: length=11
kfdhdb.capname:                         ; 0x088: length=0
kfdhdb.crestmp.hi:             32990483 ; 0x0a8: HOUR=0x13 DAYS=0x8 MNTH=0x9 YEAR=0x7dd
kfdhdb.crestmp.lo:            303455232 ; 0x0ac: USEC=0x0 MSEC=0x197 SECS=0x21 MINS=0x4
kfdhdb.mntstmp.hi:             32990485 ; 0x0b0: HOUR=0x15 DAYS=0x8 MNTH=0x9 YEAR=0x7dd
kfdhdb.mntstmp.lo:           1776845824 ; 0x0b4: USEC=0x0 MSEC=0x221 SECS=0x1e MINS=0x1a
kfdhdb.secsize:                     512 ; 0x0b8: 0x0200
kfdhdb.blksize:                    4096 ; 0x0ba: 0x1000
kfdhdb.ausize:                  1048576 ; 0x0bc: 0x00100000
kfdhdb.mfact:                    113792 ; 0x0c0: 0x0001bc80
kfdhdb.dsksize:                    5451 ; 0x0c4: 0x0000154b
kfdhdb.pmcnt:                         3 ; 0x0c8: 0x00000003
kfdhdb.fstlocn:                       1 ; 0x0cc: 0x00000001
kfdhdb.altlocn:                       2 ; 0x0d0: 0x00000002
kfdhdb.f1b1locn:                     10 ; 0x0d4: 0x0000000a
kfdhdb.redomirrors[0]:                0 ; 0x0d8: 0x0000
kfdhdb.redomirrors[1]:                0 ; 0x0da: 0x0000
kfdhdb.redomirrors[2]:                0 ; 0x0dc: 0x0000
kfdhdb.redomirrors[3]:                0 ; 0x0de: 0x0000
kfdhdb.dbcompat:              168820736 ; 0x0e0: 0x0a100000
kfdhdb.grpstmp.hi:             32990483 ; 0x0e4: HOUR=0x13 DAYS=0x8 MNTH=0x9 YEAR=0x7dd
kfdhdb.grpstmp.lo:            301063168 ; 0x0e8: USEC=0x0 MSEC=0x77 SECS=0x1f MINS=0x4
kfdhdb.vfstart:                     224 ; 0x0ec: 0x000000e0
kfdhdb.vfend:                       256 ; 0x0f0: 0x00000100
kfdhdb.spfile:                      219 ; 0x0f4: 0x000000db   ----asm spfile的起点
kfdhdb.spfflg:                        1 ; 0x0f8: 0x00000001
kfdhdb.flags:                         1 ; 0x0fc: 0x00000001

备份ocr

[root@xifenfei xff-cluster]# ocrconfig  -manualbackup
xifenfei     2013/09/08 23:48:57     /u01/app/12.1/grid/product/cdata/xff-cluster/backup_20130908_234857.ocr
[root@xifenfei xff-cluster]# ocrconfig -showbackup
xifenfei     2013/08/08 21:11:00     /u01/app/12.1/grid/product/cdata/xifenfe-cluster/backup00.ocr
xifenfei     2013/08/08 17:10:56     /u01/app/12.1/grid/product/cdata/xifenfe-cluster/backup01.ocr
xifenfei     2013/07/08 20:23:18     /u01/app/12.1/grid/product/cdata/xifenfe-cluster/backup02.ocr
xifenfei     2013/08/08 17:10:56     /u01/app/12.1/grid/product/cdata/xifenfe-cluster/day.ocr
xifenfei     2013/08/08 17:10:56     /u01/app/12.1/grid/product/cdata/xifenfe-cluster/week.ocr
xifenfei     2013/09/08 23:48:57     /u01/app/12.1/grid/product/cdata/xff-cluster/backup_20130908_234857.ocr
xifenfei     2013/06/28 22:55:02     /u01/app/12.1/grid/product/cdata/xifenfe-cluster/backup_20130628_225502.ocr

破坏asm disk

[grid@xifenfei ~]$ dd if=/dev/zero of=/dev/sdc2 bs=4096 count=1
1+0 records in
1+0 records out
4096 bytes (4.1 kB) copied, 6.6061e-05 seconds, 62.0 MB/s

关闭crs

[root@xifenfei xff-cluster]# crsctl stop crs

启动crs

[root@xifenfei xff-cluster]# crsctl start crs
CRS-4123: Oracle High Availability Services has been started.
[grid@xifenfei admin]$ crsctl status res -t -init
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.asm
      1        ONLINE  OFFLINE                               Instance Shutdown,ST
                                                             ABLE
ora.cluster_interconnect.haip
      1        ONLINE  OFFLINE                               STABLE
ora.crf
      1        ONLINE  OFFLINE                               STABLE
ora.crsd
      1        ONLINE  OFFLINE                               STABLE
ora.cssd
      1        ONLINE  OFFLINE      xifenfei                 STARTING
ora.cssdmonitor
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.ctssd
      1        ONLINE  OFFLINE                               STABLE
ora.diskmon
      1        OFFLINE OFFLINE                               STABLE
ora.drivers.acfs
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.evmd
      1        ONLINE  INTERMEDIATE xifenfei                 STABLE
ora.gipcd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.gpnpd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.mdnsd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.storage
      1        ONLINE  OFFLINE                               STABLE
--------------------------------------------------------------------------------

GI相关日志

--alert日志
2013-09-08 23:53:37.662:
[gpnpd(1507)]CRS-2328:GPNPD started on node xifenfei.
2013-09-08 23:54:10.244:
[cssd(1584)]CRS-1713:CSSD daemon is started in hub mode
2013-09-08 23:54:10.915:
[cssd(1584)]CRS-1714:Unable to discover any voting files, retrying discovery in 15 seconds; Details at (:CSSNM00070:) in /u01/app/12.1/grid/product/log/xifenfei/cssd/ocssd.log
2013-09-08 23:54:11.183:
[ohasd(1367)]CRS-2767:Resource state recovery not attempted for 'ora.diskmon' as its target state is OFFLINE
2013-09-08 23:54:11.183:
[ohasd(1367)]CRS-2769:Unable to failover resource 'ora.diskmon'.
2013-09-08 23:54:26.044:
[cssd(1584)]CRS-1714:Unable to discover any voting files, retrying discovery in 15 seconds; Details at (:CSSNM00070:) in /u01/app/12.1/grid/product/log/xifenfei/cssd/ocssd.log
2013-09-08 23:54:41.146:
[cssd(1584)]CRS-1714:Unable to discover any voting files, retrying discovery in 15 seconds; Details at (:CSSNM00070:) in /u01/app/12.1/grid/product/log/xifenfei/cssd/ocssd.log
2013-09-08 23:54:56.195:
[cssd(1584)]CRS-1714:Unable to discover any voting files, retrying discovery in 15 seconds; Details at (:CSSNM00070:) in /u01/app/12.1/grid/product/log/xifenfei/cssd/ocssd.log
--ocssd日志
2013-09-08 23:54:25.976: [    GPNP][1090226496]clsgpnp_profileCallUrlInt: [at clsgpnp.c:2360] Result: (0) CLSGPNP_OK. Successful get-profile CALL to remote "ipc://GPNPD_xifenfei" disco ""
2013-09-08 23:54:25.976: [    CSSD][1090226496]clssnmReadDiscoveryProfile: voting file discovery string(/dev/sd*)
2013-09-08 23:54:25.976: [    CSSD][1090226496]clssnmvDDiscThread: using discovery string /dev/sd* for initial discovery
2013-09-08 23:54:25.976: [   SKGFD][1090226496]Discovery with str:/dev/sd*:
2013-09-08 23:54:25.976: [   SKGFD][1090226496]UFS discovery with :/dev/sd*:
2013-09-08 23:54:26.032: [   SKGFD][1090226496]Fetching UFS disk :/dev/sdc:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sdc1:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sdb:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sdc2:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sdd:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sdd1:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sda:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sda1:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]Fetching UFS disk :/dev/sda2:
2013-09-08 23:54:26.037: [   SKGFD][1090226496]OSS discovery with :/dev/sd*:
2013-09-08 23:54:26.042: [   SKGFD][1090226496]Handle 0x1d65c10 from lib :UFS:: for disk :/dev/sdb:
2013-09-08 23:54:26.043: [   SKGFD][1090226496]Handle 0x20c95a0 from lib :UFS:: for disk :/dev/sdc2:
2013-09-08 23:54:26.043: [   SKGFD][1090226496]Handle 0x20c9dd0 from lib :UFS:: for disk :/dev/sdd:
2013-09-08 23:54:26.044: [   SKGFD][1090226496]Lib :UFS:: closing handle 0x1d65c10 for disk :/dev/sdb:
2013-09-08 23:54:26.044: [   SKGFD][1090226496]Lib :UFS:: closing handle 0x20c95a0 for disk :/dev/sdc2:
2013-09-08 23:54:26.044: [   SKGFD][1090226496]Lib :UFS:: closing handle 0x20c9dd0 for disk :/dev/sdd:
2013-09-08 23:54:26.044: [    CSSD][1090226496]clssnmvDiskVerify: Successful discovery of 0 disks
2013-09-08 23:54:26.044: [    CSSD][1090226496]clssnmCompleteInitVFDiscovery: Completing initial voting file discovery
2013-09-08 23:54:26.044: [    CSSD][1090226496]clssnmvFindInitialConfigs: No voting files found
2013-09-08 23:54:26.044: [    CSSD][1090226496](:CSSNM00070:)clssnmCompleteInitVFDiscovery: Voting file not found. Retrying discovery in 15 seconds

在我们破坏了ocr所在的asm disk的磁盘后,启动crs明显提示无法找到votedisk信息

强制关闭crs

[root@xifenfei xff-cluster]# crsctl stop crs -f
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'xifenfei'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'xifenfei'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'xifenfei'
CRS-2677: Stop of 'ora.drivers.acfs' on 'xifenfei' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'xifenfei' succeeded
CRS-2673: Attempting to stop 'ora.gpnpd' on 'xifenfei'
CRS-2673: Attempting to stop 'ora.gipcd' on 'xifenfei'
CRS-2673: Attempting to stop 'ora.evmd' on 'xifenfei'
CRS-2677: Stop of 'ora.gpnpd' on 'xifenfei' succeeded
CRS-2677: Stop of 'ora.gipcd' on 'xifenfei' succeeded
CRS-2677: Stop of 'ora.evmd' on 'xifenfei' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'xifenfei' has completed
CRS-4133: Oracle High Availability Services has been stopped.

exclusive模式启动crs

[root@xifenfei xff-cluster]# crsctl start crs -excl -nocrs
CRS-4123: Oracle High Availability Services has been started.
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'xifenfei'
CRS-2677: Stop of 'ora.drivers.acfs' on 'xifenfei' succeeded
CRS-2672: Attempting to start 'ora.evmd' on 'xifenfei'
CRS-2672: Attempting to start 'ora.mdnsd' on 'xifenfei'
CRS-2676: Start of 'ora.evmd' on 'xifenfei' succeeded
CRS-2676: Start of 'ora.mdnsd' on 'xifenfei' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'xifenfei'
CRS-2676: Start of 'ora.gpnpd' on 'xifenfei' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'xifenfei'
CRS-2672: Attempting to start 'ora.gipcd' on 'xifenfei'
CRS-2676: Start of 'ora.cssdmonitor' on 'xifenfei' succeeded
CRS-2676: Start of 'ora.gipcd' on 'xifenfei' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'xifenfei'
CRS-2672: Attempting to start 'ora.diskmon' on 'xifenfei'
CRS-2676: Start of 'ora.diskmon' on 'xifenfei' succeeded
CRS-2676: Start of 'ora.cssd' on 'xifenfei' succeeded
CRS-2672: Attempting to start 'ora.drivers.acfs' on 'xifenfei'
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'xifenfei'
CRS-2672: Attempting to start 'ora.ctssd' on 'xifenfei'
CRS-2676: Start of 'ora.ctssd' on 'xifenfei' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'xifenfei' succeeded
CRS-2676: Start of 'ora.drivers.acfs' on 'xifenfei' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'xifenfei'
CRS-2676: Start of 'ora.asm' on 'xifenfei' succeeded
[grid@xifenfei xifenfei]$ crsctl stat res -t -init
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.asm
      1        ONLINE  INTERMEDIATE xifenfei                 OCR not started,STAB
                                                             LE
ora.cluster_interconnect.haip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.crf
      1        OFFLINE OFFLINE                               STABLE
ora.crsd
      1        OFFLINE OFFLINE                               STABLE
ora.cssd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.cssdmonitor
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.ctssd
      1        ONLINE  ONLINE       xifenfei                 ACTIVE:0,STABLE
ora.diskmon
      1        OFFLINE OFFLINE                               STABLE
ora.drivers.acfs
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.evmd
      1        ONLINE  INTERMEDIATE xifenfei                 STABLE
ora.gipcd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.gpnpd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.mdnsd
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.storage
      1        OFFLINE OFFLINE                               STABLE

创建磁盘组

[grid@xifenfei xifenfei]$ sqlplus / as sysasm
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 00:23:40 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> create diskgroup DG_OCR external redundancy disk '/dev/sdc2' attribute 'COMPATIBLE.ASM' = '12.1.0';
Diskgroup created.
[root@xifenfei xff-cluster]# ls -l
total 1472
-rw-r--r-- 1 root root 1503232 Sep  8 23:48 backup_20130908_234857.ocr
[root@xifenfei xff-cluster]# ocrconfig -restore backup_20130908_234857.ocr
PROT-35: The configured OCR locations are not accessible
SQL> conn / as sysasm
Connected.
SQL> drop diskgroup DG_OCR force including contents;
Diskgroup dropped.
SQL>  create diskgroup DG_SYS  external redundancy disk '/dev/sdc2' attribute 'COMPATIBLE.ASM' = '12.1.0';
Diskgroup created.

为了操作方便,建议创建磁盘组和以前ocr所在异常的磁盘组一致

还原ocr

[root@xifenfei xff-cluster]# ocrconfig -restore backup_20130908_234857.ocr
--ALERT 日志
2013-09-09 00:26:50.584:
[client(3015)]CRS-1002:The OCR was restored from file backup_20130908_234857.ocr.

处理votedisk

[root@xifenfei xff-cluster]# crsctl replace votedisk +DG_SYS
Successful addition of voting disk 60a037da30714f6bbfe5d90206ff27a7.
Successfully replaced voting disk group with +DG_SYS.
CRS-4266: Voting file(s) successfully replaced

创建asm spfile

[grid@xifenfei dbs]$ vi /tmp/asm.txt
instance_type='asm'
large_pool_size=12M
remote_login_passwordfile= "EXCLUSIVE"
asm_diskstring           = "/dev/sd*"
asm_power_limit          = 1
[grid@xifenfei dbs]$ sqlplus '/ as sysasm'
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 00:34:18 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL>  create spfile='+DG_SYS' FROM pfile='/tmp/asm.txt';
File created.

重启crs

[root@xifenfei xff-cluster]# crsctl stop crs -f
[root@xifenfei xff-cluster]# crsctl start crs
CRS-4123: Oracle High Availability Services has been started.
[grid@xifenfei dbs]$ crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------

这里crs已经恢复正常，进一步检查ocr,votedisk,asm spfile情况

[grid@xifenfei ~]$ ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :    +DG_SYS
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
         Cluster registry integrity check succeeded
         Logical corruption check bypassed due to non-privileged user
[grid@xifenfei ~]$ sqlplus / as sysasm
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 16:12:21 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DG_SYS/xff-cluster/ASMPARAMET
                                                 ERFILE/registry.253.825640465
SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
[grid@xifenfei ~]$ crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   60a037da30714f6bbfe5d90206ff27a7 (/dev/sdc2) [DG_SYS]
Located 1 voting disk(s).

至此在ocr 磁盘组异常,而有ocr备份的情况下故障恢复完毕，对于没有ocr备份的故障，只能通过重建ocr来完成，大概步骤为

--deconfigure(root)
remote node
# <$GRID_HOME>/crs/install/rootcrs.pl -deconfig -force -verbose
lastnode
# <$GRID_HOME>/crs/install/rootcrs.pl -deconfig -force -verbose -lastnode
--配置信息重建ocr等(grid)
# $GRID_HOME/crs/config/config.sh

ORACLE 12C dbms_utility.expand_sql_text 查看SQL视图基表

联系：手机/微信(+86 17813235971) QQ(107644445)

标题：ORACLE 12C dbms_utility.expand_sql_text 查看SQL视图基表

在ORACLE 12C之间的版本，如果一条sql中包含了N多视图,我们要查询这条sql访问了哪些基表，以及他们的关联条件是一件比较麻烦的时候，需要进入一个个视图然后一个个去分析，纯体力活，到了12C之后，ORACLE 提供了dbms_utility.expand_sql_text来获得某条sql所对应的全部基表，不用我们再一级一级的去看.

创建测试表
三个表分别来自数据库的v$datafile,v$tablespace,v$tempfile视图

CDB_PDB@CHF> create table datafile
  2  as
  3  select * from v$datafile;
表已创建。
CDB_PDB@CHF> create table tablespace
  2  as
  3  select * from v$tablespace;
表已创建。
CDB_PDB@CHF> create table tempfile
  2  as
  3  select * from v$tempfile;
表已创建。

创建视图
创建三个视图,datafile与tablespace，tempfile与tablespace，这两个视图然后做union all产生新视图

CDB_PDB@CHF> create view v_xifenfei1 as
  2  select d.name dname,t.name tname from datafile d,tablespace t where d.ts#=t.ts#;
视图已创建。
CDB_PDB@CHF> create view v_xifenfei2 as
  2  select d.name dname,t.name tname from tempfile d,tablespace t where d.ts#=t.ts#;
视图已创建。
CDB_PDB@CHF> create view v_xifenfei
  2  as
  3  select * from v_xifenfei1
  4  union all
  5  select * from v_xifenfei2;
视图已创建。

找出查询视图sql对应基表

CDB_PDB@CHF>  set linesize 32767 pagesize 0 serveroutput on
CDB_PDB@CHF>  declare
  2     original_sql clob :='select * from v_xifenfei';
  3     expanded_sql clob := empty_clob();
  4  begin
  5      dbms_utility.expand_sql_text(original_sql,expanded_sql);
  6      dbms_output.put_line(expanded_sql);
  7  end;
  8  /
SELECT "A1"."DNAME" "DNAME","A1"."TNAME" "TNAME" FROM  ( (SELECT "A4"."DNAME" "DNAME","A4"."TNAME" "TNAME" FROM  (SELECT
 "A6"."NAME" "DNAME","A5"."NAME" "TNAME" FROM CHF."DATAFILE" "A6",CHF."TABLESPACE" "A5" WHERE "A6"."TS#"="A5"."TS#") "A4
") UNION ALL  (SELECT "A3"."DNAME" "DNAME","A3"."TNAME" "TNAME" FROM  (SELECT "A8"."NAME" "DNAME","A7"."NAME" "TNAME" FR
OM CHF."TEMPFILE" "A8",CHF."TABLESPACE" "A7" WHERE "A8"."TS#"="A7"."TS#") "A3")) "A1"
PL/SQL 过程已成功完成。

格式化sql语句

/* Formatted on 2013/8/24 22:33:33 (QP5 v5.227.12220.39754) */
SELECT "A1"."DNAME" "DNAME", "A1"."TNAME" "TNAME"
  FROM ( (SELECT "A4"."DNAME" "DNAME", "A4"."TNAME" "TNAME"
            FROM (SELECT "A6"."NAME" "DNAME", "A5"."NAME" "TNAME"
                    FROM CHF."DATAFILE" "A6", CHF."TABLESPACE" "A5"
                   WHERE "A6"."TS#" = "A5"."TS#") "A4")
        UNION ALL
        (SELECT "A3"."DNAME" "DNAME", "A3"."TNAME" "TNAME"
           FROM (SELECT "A8"."NAME" "DNAME", "A7"."NAME" "TNAME"
                   FROM CHF."TEMPFILE" "A8", CHF."TABLESPACE" "A7"
                  WHERE "A8"."TS#" = "A7"."TS#") "A3")) "A1"

这里就非常清晰的看到是datafile与tablespace、tempfile与tablespace做union all的sql语句

分类目录归档：ORACLE 12C

RAC等待事件

GC当前块2-Way/3-Way

GC CR Block 2-Way/3-Way

GC CR Grant 2-Way/Gc Current Grant 2-Way

GC CR Block Busy/GC Current Block Busy

GC CR Block Congested/GC Current Block Congested