opatch auto 出现unable to get oracle owner for 错误

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标题:opatch auto 出现unable to get oracle owner for 错误

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

在11.2.0.4环境中使用opatch auto 打psu补丁之时遇到unable to get oracle owner for 错误

[root@rac1 35058300]# opatch auto .
Executing /u01/app/11.2.0/grid/perl/bin/perl /u01/app/11.2.0/grid/OPatch/crs/patch11203.pl -patchdir . -patchn . 
   -paramfile /u01/app/11.2.0/grid/crs/install/crsconfig_params

This is the main log file: /u01/app/11.2.0/grid/cfgtoollogs/opatchauto2024-08-06_22-25-22.log

This file will show your detected configuration and all the steps that opatchauto attempted to do on your system:
/u01/app/11.2.0/grid/cfgtoollogs/opatchauto2024-08-06_22-25-22.report.log

2024-08-06 22:25:22: Starting Clusterware Patch Setup
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params
unable to get oracle owner for 

根据mos:OPATCH AUTO Fails with “unable to get oracle owner for” in Multi-Byte Language Environment (Doc ID 1325256.1)的描述是由于多字节语言环境导致,检测当前系统环境,确实是中文语言

[root@rac1 35058300]# env|grep LANG
LANG=zh_CN.UTF-8

export设置LANG=C,然后打patch成功

[root@rac1 35058300]# export LANG=C
[root@rac1 35058300]# opatch auto .
Executing /u01/app/11.2.0/grid/perl/bin/perl /u01/app/11.2.0/grid/OPatch/crs/patch11203.pl -patchdir . -patchn .
  -paramfile /u01/app/11.2.0/grid/crs/install/crsconfig_params

This is the main log file: /u01/app/11.2.0/grid/cfgtoollogs/opatchauto2024-08-06_22-27-31.log

This file will show your detected configuration and all the steps that opatchauto attempted to do on your system:
/u01/app/11.2.0/grid/cfgtoollogs/opatchauto2024-08-06_22-27-31.report.log

2024-08-06 22:27:31: Starting Clusterware Patch Setup
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params

Stopping RAC /u01/app/oracle/product/11.2.0/db_1 ...
Stopped RAC /u01/app/oracle/product/11.2.0/db_1 successfully

patch ././32758914/custom/server/32758914  apply successful for home  /u01/app/oracle/product/11.2.0/db_1 
patch ././34998337  apply successful for home  /u01/app/oracle/product/11.2.0/db_1 

Stopping CRS...
Stopped CRS successfully

patch ././32758914  apply successful for home  /u01/app/11.2.0/grid 
patch ././34998337  apply successful for home  /u01/app/11.2.0/grid 
patch ././33112794  apply successful for home  /u01/app/11.2.0/grid 

Starting CRS...
Installing Trace File Analyzer
CRS-4123: Oracle High Availability Services has been started.

Starting RAC /u01/app/oracle/product/11.2.0/db_1 ...
Started RAC /u01/app/oracle/product/11.2.0/db_1 successfully

opatch auto succeeded.

Oracle 23ai 表和视图的列最多支持到4096个

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标题:Oracle 23ai 表和视图的列最多支持到4096个

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

根据经验,oracle在以前常用版本中(包含oracle 19c),表和视图支持最大的列数量为1000,在oracle 23ai中允许支持最大列数量为4096,具体参见:23ai New Feature – Increased RDBMS Table/View Column Limit to 4096 (Doc ID 2947033.1),这里做了简单的试验,确认如果要支持4096列,需要设置max_columns=’EXTENDED’
准备测试表1000列、4096列和4097列

create table t_xff_col_1000(
col1 number,
col2 number,
col3 number,
col4 number,
……
col1000 number
);


create table t_xff_col_4096(
col1 number,
col2 number,
col3 number,
col4 number,
……
col4096 number
);

create table t_xff_col_4097(
col1 number,
col2 number,
col3 number,
col4 number,
……
col4097 number
);

[oracle@xifenfei ~]$ cat tab_col_4096.sql |grep col|grep -v xff|wc -l
4096
[oracle@xifenfei ~]$ cat tab_col_1000.sql |grep col|grep -v xff|wc -l
1000
[oracle@xifenfei ~]$ cat tab_col_4097.sql |grep col|grep -v xff|wc -l
4097

在max_columns为默认值的情况下(STANDARD)23ai版本中最多也只能支持1000列

[oracle@xifenfei ~]$ sqlplus / as sysdba

SQL*Plus: Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems on Mon Aug 5 22:01:57 2024
Version 23.5.0.24.07

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 23ai Enterprise Edition Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems
Version 23.5.0.24.07

SQL> show parameter max_co;

NAME                                 TYPE
------------------------------------ ----------------------
VALUE
------------------------------
max_columns                          string
STANDARD

SQL> @tab_col_1000.sql

Table created.

SQL> @tab_col_4096.sql
        col1001 number,
        *
ERROR at line 1002:
ORA-01792: maximum number of columns in a table or view is 1000

在max_columns为EXTENDED的情况下能够支持列4096

SQL> alter system set max_columns='EXTENDED';
alter system set max_columns='EXTENDED'
                                      *
ERROR at line 1:
ORA-02096: specified initialization parameter is not modifiable with this
option


SQL>  alter system set max_columns='EXTENDED' scope=spfile;

System altered.

SQL> shutdown immediate;
Database closed.
Database dismounted.

ORACLE instance shut down.
SQL> SQL> startup 
ORACLE instance started.

Total System Global Area 2413360688 bytes
Fixed Size                  5363248 bytes
Variable Size             570425344 bytes
Database Buffers         1828716544 bytes
Redo Buffers                8855552 bytes
Database mounted.
Database opened.
SQL> show parameter max_co;

NAME                                 TYPE
------------------------------------ ----------------------
VALUE
------------------------------
max_columns                          string
EXTENDED
SQL> @tab_col_4096.sql

Table created.

SQL> select table_name,count(1) from dba_tab_cols where table_name like 'T_XFF%' GROUP BY TABLE_NAME;

TABLE_NAME
--------------------------------------------------------------------------------
  COUNT(1)
----------
T_XFF_COL_4096
      4096

T_XFF_COL_1000
      1000

SQL> @tab_col_4097.sql
create table t_xff_col_4096(
*
ERROR at line 1:
ORA-01792: maximum number of columns in a table or view is 4096

断电引起redo和数据文件不一致故障恢复

联系:手机/微信(+86 17813235971) QQ(107644445)QQ咨询惜分飞

标题:断电引起redo和数据文件不一致故障恢复

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

有些时候故障总是来的让人非常意外,这个在准备停机迁移数据库之前的几分钟由于某种原因直接导致主机掉电,再次开机数据库无法启动

Sat Aug 03 23:10:37 2024
Successful mount of redo thread 1, with mount id 3696805928
Database mounted in Exclusive Mode
Lost write protection disabled
Completed: alter database mount
Sat Aug 03 23:10:43 2024
alter database open
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_ora_6808.trc:
ORA-01113: 文件 21 需要介质恢复
ORA-01110: 数据文件 21: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\XIFENFEI.DBF'
ORA-1113 signalled during: alter database open...

尝试数据库恢复各种报错ORA-600 kdourp_inorder2,ORA-600 3020,ORA-7445 kdxlin等

ALTER DATABASE RECOVER    CONTINUE DEFAULT  
Media Recovery Log D:\APP\ADMINISTRATOR\FAST_RECOVERY_AREA\XFF\ARCHIVELOG\2024_08_03\O1_MF_1_1159998_MBW605HP_.ARC
ORA-279 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...
ALTER DATABASE RECOVER    CONTINUE DEFAULT  
Media Recovery Log D:\APP\ADMINISTRATOR\FAST_RECOVERY_AREA\XFF\ARCHIVELOG\2024_08_03\O1_MF_1_1159999_MBW63QBY_.ARC
Sat Aug 03 23:22:10 2024
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0xC] [PC:0x14306B54A, kdxlin()+4432]
Sat Aug 03 23:22:10 2024
Exception [type: ACCESS_VIOLATION, UNABLE_TO_READ] [ADDR:0xC] [PC:0x14306B54A, kdxlin()+4432]
Sat Aug 03 23:22:10 2024
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr25_7740.trc  (incident=132557):
ORA-00600: internal error code, arguments: [kdourp_inorder2], [4], [22], [44], [44], [], [], [], [], [], [], []
Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\incident\incdir_132557\xff_pr25_7740_i132557.trc
ERROR: Unable to normalize symbol name for the following short stack (at offset 213):
dbgexProcessError()+200<-dbgeExecuteForError()+65<-dbgePostErrorKGE()+2269<-dbkePostKGE_kgsf()+77<-kgeade()+562
<-kgerelv()+151<-kgerev()+45<-kgerec5()+60<-sss_xcpt_EvalFilterEx()+1862<-sss_xcpt_EvalFilter()+174
<-.1.4_5+59<-00007FFCB5E2C92F<-00007FFCB5E3D82D<-00007FFCB5DE916B<-00007FFCB5E3C9EE<-kdxlin()+4432
<-kco_issue_callback()+196<-kcoapl()+746<-kcbr_apply_change()+6156<-kcbr_mapply_change()+1162
<-kcbrapply()+2297<-kcbr_apply_pending()+2931<-krp_slave_apply()+1155<-krp_slave_main()+4010<-ksvrdp()+2580
<-opirip()+904<-opidrv()+906<-sou2o()+98<-opimai_real()+280<-opimai()+191<-BackgroundThreadStart()+646
<-00007FFCB562168D<-00007FFCB5E14629
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr1w_6472.trc  (incident=132485):
ORA-07445: exception encountered: core dump [kdxlin()+4432] [ACCESS_VIOLATION] [ADDR:0xC] [PC:0x14306B54A]
Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\incident\incdir_132485\xff_pr1w_6472_i132485.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr2o_7472.trc  (incident=132709):
ORA-07445: exception encountered: core dump [kdxlin()+4432] [ACCESS_VIOLATION] [ADDR:0xC] [PC:0x14306B54A] 
Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\incident\incdir_132709\xff_pr2o_7472_i132709.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Sat Aug 03 23:22:11 2024
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr18_7812.trc  (incident=132301):
ORA-00600: internal error code, arguments: [3020], [62], [517633], [260564481], [], [], [], []
ORA-10567: Redo is inconsistent with data block (file# 62, block# 517633, file offset is 4240449536 bytes)
ORA-10564: tablespace HSEMR_TAB
ORA-01110: data file 62: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\EMR006.DBF'
ORA-10560: block type 'FIRST LEVEL BITMAP BLOCK'
Sat Aug 03 23:22:56 2024
Slave exiting with ORA-10562 exception
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr25_7740.trc:
ORA-10562: Error occurred while applying redo to data block (file# 64, block# 508263)
ORA-10564: tablespace HSEMR_TAB
ORA-01110: data file 64: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\HSEMR_TAB008.DBF'
ORA-10561: block type 'TRANSACTION MANAGED DATA BLOCK', data object# 467202
ORA-00600: internal error code, arguments: [kdourp_inorder2], [4], [22], [44], [44], [], [], []
Sat Aug 03 23:22:56 2024
Slave exiting with ORA-10562 exception
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr1w_6472.trc:
ORA-10562: Error occurred while applying redo to data block (file# 65, block# 498512)
ORA-10564: tablespace HSEMR_TAB
ORA-01110: data file 65: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\EMR009.DBF'
ORA-10561: block type 'TRANSACTION MANAGED INDEX BLOCK', data object# 467200
ORA-00607: Internal error occurred while making a change to a data block
ORA-00602: internal programming exception
ORA-07445: exception encountered: core dump [kdxlin()+4432] [ACCESS_VIOLATION] [ADDR:0xC] 
Sat Aug 03 23:22:57 2024
Media Recovery failed with error 448
Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\xff\xff\trace\xff_pr00_6732.trc:
ORA-00283: recovery session canceled due to errors
ORA-00448: normal completion of background process
Sat Aug 03 23:22:57 2024
ORA-600 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...
ALTER DATABASE RECOVER CANCEL 
ORA-1112 signalled during: ALTER DATABASE RECOVER CANCEL ...

通过分析确认有部分数据文件和redo信息不匹配,导致无法正常recover成功

SQL> recover datafile 77;
完成介质恢复。
SQL> recover datafile 78;
ORA-00283: 恢复会话因错误而取消
ORA-00600: 内部错误代码, 参数: [3020], [78], [473221], [327628933], [], [], [],
[], [], [], [], []
ORA-10567: Redo is inconsistent with data block (file# 78, block# 473221, file
offset is 3876626432 bytes)
ORA-10564: tablespace HSEMR_TAB
ORA-01110: 数据文件 78: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\HIS23.DBF'
ORA-10560: block type 'FIRST LEVEL BITMAP BLOCK'

SQL> recover datafile 66;
ORA-00279: 更改 6029114092 (在 08/03/2024 19:44:05 生成) 对于线程 1 是必需的
ORA-00289: 建议:
D:\APP\ADMINISTRATOR\FAST_RECOVERY_AREA\XFF\ARCHIVELOG\2024_08_03\O1_MF_1_115999

9_MBW63QBY_.ARC
ORA-00280: 更改 6029114092 (用于线程 1) 在序列 #1159999 中


指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
auto
已应用的日志。
完成介质恢复。
SQL> recover datafile 65;
ORA-00279: 更改 6029114092 (在 08/03/2024 19:44:05 生成) 对于线程 1 是必需的
ORA-00289: 建议:
D:\APP\ADMINISTRATOR\FAST_RECOVERY_AREA\XFF\ARCHIVELOG\2024_08_03\O1_MF_1_115999

9_MBW63QBY_.ARC
ORA-00280: 更改 6029114092 (用于线程 1) 在序列 #1159999 中


指定日志: {<RET>=suggested | filename | AUTO | CANCEL}
auto
ORA-00283: 恢复会话因错误而取消
ORA-10562: Error occurred while applying redo to data block (file# 65, block#
498544)
ORA-10564: tablespace HSEMR_TAB
ORA-01110: 数据文件 65: 'D:\APP\ADMINISTRATOR\ORADATA\XFF\EMR009.DBF'
ORA-10561: block type 'TRANSACTION MANAGED INDEX BLOCK', data object# 467200
ORA-00607: 当更改数据块时出现内部错误
ORA-00602: 内部编程异常错误
ORA-07445: 出现异常错误: 核心转储 [kdxlin()+4432] [ACCESS_VIOLATION] [ADDR:0xC]
[PC:0x14306B54A] [UNABLE_TO_READ] []


ORA-01112: 未启动介质恢复

对于最终无法正常recover成功数据文件,使用Oracle数据库恢复利器:Oracle Recovery Tools工具快速调整scn
oracle-recovery-tools


然后重建ctl,recover 数据库并open成功

Sun Aug 04 01:01:51 2024
Successful mount of redo thread 1, with mount id 3696824638
Completed: CREATE CONTROLFILE REUSE DATABASE "XFF" NORESETLOGS FORCE LOGGING ARCHIVELOG
    MAXLOGFILES 16
    MAXLOGMEMBERS 3
    MAXDATAFILES 200
    MAXINSTANCES 8
    MAXLOGXFFTORY 23360
LOGFILE
  GROUP 1 'D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO01.LOG'  SIZE 50M BLOCKSIZE 512,
  GROUP 2 'D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO02.LOG'  SIZE 50M BLOCKSIZE 512,
  GROUP 3 'D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO03.LOG'  SIZE 50M BLOCKSIZE 512
DATAFILE
  'D:\APP\ADMINISTRATOR\ORADATA\XFF\SYSTEM01.DBF',
  'D:\APP\ADMINISTRATOR\ORADATA\XFF\SYSAUX01.DBF',
……
ALTER DATABASE RECOVER  database  
Media Recovery Start
 started logmerger process
Only allocated 127 recovery slaves (requested 128)
Parallel Media Recovery started with 127 slaves
Sun Aug 04 01:01:56 2024
Recovery of Online Redo Log: Thread 1 Group 2 Seq 1160002 Reading mem 0
  Mem# 0: D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO02.LOG
Completed: ALTER DATABASE RECOVER  database  
Sun Aug 04 01:02:20 2024
alter database open
Beginning crash recovery of 1 threads
 parallel recovery started with 32 processes
Started redo scan
Completed redo scan
 read 1946 KB redo, 0 data blocks need recovery
Started redo application at
 Thread 1: logseq 1160002, block 2, scn 6029119350
Recovery of Online Redo Log: Thread 1 Group 2 Seq 1160002 Reading mem 0
  Mem# 0: D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO02.LOG
Completed redo application of 0.00MB
Completed crash recovery at
 Thread 1: logseq 1160002, block 3895, scn 6029139793
 0 data blocks read, 0 data blocks written, 1946 redo k-bytes read
Initializing SCN for created control file
Database SCN compatibility initialized to 3
Sun Aug 04 01:02:21 2024
LGWR: STARTING ARCH PROCESSES
Sun Aug 04 01:02:21 2024
ARC0 started with pid=71, OS id=2772 
ARC0: Archival started
LGWR: STARTING ARCH PROCESSES COMPLETE
ARC0: STARTING ARCH PROCESSES
Sun Aug 04 01:02:22 2024
ARC1 started with pid=72, OS id=7996 
Sun Aug 04 01:02:22 2024
ARC2 started with pid=73, OS id=2900 
Sun Aug 04 01:02:22 2024
ARC3 started with pid=74, OS id=6856 
Archived Log entry 1 added for thread 1 sequence 1160000 ID 0xc4814d77 dest 1:
ARC1: Archival started
ARC2: Archival started
ARC2: Becoming the 'no FAL' ARCH
ARC2: Becoming the 'no SRL' ARCH
ARC1: Becoming the heartbeat ARCH
Thread 1 advanced to log sequence 1160003 (thread open)
Thread 1 opened at log sequence 1160003
  Current log# 1 seq# 1160003 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\XFF\REDO01.LOG
Successful open of redo thread 1
MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set
Sun Aug 04 01:02:23 2024
SMON: enabling cache recovery
Archived Log entry 2 added for thread 1 sequence 1160002 ID 0xc4814d77 dest 1:
Archived Log entry 3 added for thread 1 sequence 1160001 ID 0xc4814d77 dest 1:
ARC3: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
[7808] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:7657234 end:7657703 diff:469 (4 seconds)
Dictionary check beginning
Tablespace 'TEMP' #3 found in data dictionary,
but not in the controlfile. Adding to controlfile.
Dictionary check complete
Verifying file header compatibility for 11g tablespace encryption..
Verifying 11g file header compatibility for tablespace encryption completed
SMON: enabling tx recovery
*********************************************************************
WARNING: The following temporary tablespaces contain no files.
         Txff condition can occur when a backup controlfile has
         been restored.  It may be necessary to add files to these
         tablespaces.  That can be done using the SQL statement:
 
         ALTER TABLESPACE <tablespace_name> ADD TEMPFILE
 
         Alternatively, if these temporary tablespaces are no longer
         needed, then they can be dropped.
           Empty temporary tablespace: TEMP
*********************************************************************
Database Characterset is ZHS16GBK
No Resource Manager plan active
**********************************************************
WARNING: Files may exists in db_recovery_file_dest
that are not known to the database. Use the RMAN command
CATALOG RECOVERY AREA to re-catalog any such files.
If files cannot be cataloged, then manually delete them
using OS command.
One of the following events caused txff:
1. A backup controlfile was restored.
2. A standby controlfile was restored.
3. The controlfile was re-created.
4. db_recovery_file_dest had previously been enabled and
   then disabled.
**********************************************************
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
Sun Aug 04 01:02:27 2024
QMNC started with pid=75, OS id=7884 
LOGSTDBY: Validating controlfile with logical metadata
LOGSTDBY: Validation complete
Completed: alter database open

后续处理异常表,lob,index等数据,客户业务测试都ok,完成本次恢复工作

ORA-03113: 通信通道的文件结尾

联系:手机/微信(+86 17813235971) QQ(107644445)QQ咨询惜分飞

标题:ORA-03113: 通信通道的文件结尾

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

数据库启动报:ORA-03113: 通信通道的文件结尾

PS C:\Users\Administrator> sqlplus  / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on 星期六 8月 3 11:05:03 2024

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

已连接到空闲例程。

SQL> startup nomount
ORACLE 例程已经启动。

Total System Global Area 2.0510E+10 bytes
Fixed Size                  2184632 bytes
Variable Size            1.1476E+10 bytes
Database Buffers         8992587776 bytes
Redo Buffers               40046592 bytes
SQL> shutdown immediate
ORA-01507: ??????


ORACLE 例程已经关闭。
SQL> startup
ORACLE 例程已经启动。

Total System Global Area 2.0510E+10 bytes
Fixed Size                  2184632 bytes
Variable Size            1.1476E+10 bytes
Database Buffers         8992587776 bytes
Redo Buffers               40046592 bytes
数据库装载完毕。
ORA-03113: 通信通道的文件结尾
进程 ID: 4040
会话 ID: 1018 序列号: 7

这类错误,一般真正错误原因在alert日志中,查看alert日志

Sat Aug 03 08:15:12 2024
alter database mount exclusive
Successful mount of redo thread 1, with mount id 3557233552
Database mounted in Exclusive Mode
Lost write protection disabled
Completed: alter database mount exclusive
alter database open
Beginning crash recovery of 1 threads
 parallel recovery started with 11 processes
Started redo scan
Completed redo scan
 read 0 KB redo, 0 data blocks need recovery
Started redo application at
 Thread 1: logseq 745, block 80599, scn 7100295
Recovery of Online Redo Log: Thread 1 Group 1 Seq 745 Reading mem 0
  Mem# 0: D:\ORACLE\ORADATA\XFF\REDO01.LOG
Completed redo application of 0.00MB
Completed crash recovery at
 Thread 1: logseq 745, block 80599, scn 7120296
 0 data blocks read, 0 data blocks written, 0 redo k-bytes read
LGWR: STARTING ARCH PROCESSES
Sat Aug 03 08:15:19 2024
ARC0 started with pid=32, OS id=5496 
ARC0: Archival started
LGWR: STARTING ARCH PROCESSES COMPLETE
ARC0: STARTING ARCH PROCESSES
Sat Aug 03 08:15:20 2024
ARC1 started with pid=33, OS id=3873072 
Sat Aug 03 08:15:20 2024
ARC2 started with pid=34, OS id=3873644 
ARC1: Archival started
ARC2: Archival started
ARC2: Becoming the 'no FAL' ARCH
ARC2: Becoming the 'no SRL' ARCH
ARC1: Becoming the heartbeat ARCH
sksasmowrt WriteConsole error 6
Errors in file d:\oracle\diag\rdbms\xff\xff\trace\xff_arc2_3873644.trc:
ORA-19815: 警告: db_recovery_file_dest_size 字节 (共 10737418240 字节) 已使用 100.00%, 尚有 0 字节可用。
************************************************************************
You have following choices to free up space from recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
   then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
   BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
   reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
   system command was used to delete files, then use RMAN CROSSCHECK and
   DELETE EXPIRED commands.
************************************************************************
Errors in file d:\oracle\diag\rdbms\xff\xff\trace\xff_arc2_3873644.trc:
ORA-19809: 超出了恢复文件数的限制
ORA-19804: 无法回收 13760000 字节磁盘空间 (从 10737418240 限制中)
ARC2: Error 19809 Creating archive log file to 'D:\FRA\XFF\ARCHIVELOG\2024_08_03\O1_MF_1_744_%U_.ARC'
Sat Aug 03 08:15:20 2024
ARC3 started with pid=35, OS id=3873424 
ARC3: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
Errors in file d:\oracle\diag\rdbms\xff\xff\trace\xff_ora_3873352.trc:
ORA-19815: ??: db_recovery_file_dest_size ?? (? 10737418240 ??) ??? 100.00%, ?? 0 ?????
************************************************************************
You have following choices to free up space from recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
   then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
   BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
   reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
   system command was used to delete files, then use RMAN CROSSCHECK and
   DELETE EXPIRED commands.
************************************************************************
Errors in file d:\oracle\diag\rdbms\xff\xff\trace\xff_ora_3873352.trc:
ORA-19809: ???????????
ORA-19804: ???? 12296704 ?????? (? 10737418240 ???)
ARCH: Error 19809 Creating archive log file to 'D:\FRA\XFF\ARCHIVELOG\2024_08_03\O1_MF_1_743_%U_.ARC'
ARCH: Archival stopped, error occurred. Will continue retrying
Errors in file d:\oracle\diag\rdbms\xff\xff\trace\xff_arc2_3873644.trc:
ORA-16038: 日志 3 sequence# 744 无法归档
ORA-19809: 超出了恢复文件数的限制
ORA-00312: 联机日志 3 线程 1: 'D:\ORACLE\ORADATA\XFF\REDO03.LOG'
Errors in file d:\oracle\diag\rdbms\xff\xff\trace\xff_ora_3873352.trc:
ORA-16038: ?? 2 sequence# 743 ????
ORA-19809: ???????????
ORA-00312: ???? 2 ?? 1: 'D:\ORACLE\ORADATA\XFF\REDO02.LOG'
USER (ospid: 3873352): terminating the instance due to error 16038
Sat Aug 03 08:15:27 2024
Instance terminated by USER, pid = 3873352

是由于闪回区满了,导致redo无法归档,从而使得数据库无法正常open,解决办法:
1. 清理以前归档日志
2. 把闪回区调大一些

Oracle 23ai True Cache搭建和基本测试

联系:手机/微信(+86 17813235971) QQ(107644445)QQ咨询惜分飞

标题:Oracle 23ai True Cache搭建和基本测试

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

oracle 23ai推出的True Cache功能,提供一种比较完美的支持Oracle数据库语法,配合Oracle数据库使用的一种cache解决方案,配置也相对比较简单
主库和True Cache库说明
主库IP:192.168.222.8/主机名:xifenfei/db_unique_name:ora23ai/tns:ora23ai/sid:ora23ai
True Cache库IP:192.168.222.18/主机名:xifenfeidg/db_unique_name:ora23ai_tc/tns:ora23aitc/sid:ora23ai
主库参数文件

*.compatible='23.0.0'
*.control_files='/u01/app/oracle/oradata/ORA23AI/control01.ctl'
*.db_block_size=8192
*.db_name='ora23ai'
*.db_recovery_file_dest='/u01/app/oracle/fast_recovery_area'
*.db_recovery_file_dest_size=14742m
*.diagnostic_dest='/u01/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=ora23aiXDB)'
*.enable_pluggable_database=true
*.local_listener='listener_ora23ai'
*.log_archive_dest_1='LOCATION=USE_DB_RECOVERY_FILE_DEST valid_for=(all_logfiles,all_roles) db_unique_name=ora23ai'
*.nls_language='AMERICAN'
*.nls_territory='AMERICA'
*.open_cursors=300
*.pga_aggregate_target=764m
*.processes=320
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=2292m
*.undo_tablespace='UNDOTBS1'

True Cache库参数文件

*.true_cache=true
*.db_name=ora23ai
*.db_unique_name=ora23ai_tc
*.compatible='23.0.0'
*.db_block_size=8192
*.diagnostic_dest='/u01/app/oracle'
*.enable_pluggable_database=true
*.local_listener=listener_ora23aitc
*.remote_listener=listener_ora23ai
*.sga_target=2292m
*._exadata_feature_on=true
*.fal_server=ora23ai
*.fal_client=ora23aitc
*.db_create_file_dest=/u01/app/oracle/oradata/ORA23AI

主库和True Cache库tnsnames.ora配置

ora23ai =
 (DESCRIPTION =
 (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.222.8)(PORT = 1521))
 (CONNECT_DATA =
 (SERVER = DEDICATED)
 (SERVICE_NAME = ora23ai)
 )
 )


ora23aitc =
 (DESCRIPTION =
 (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.222.18)(PORT = 1521))
 (CONNECT_DATA =
 (SERVER = DEDICATED)
 (SERVICE_NAME = ora23ai_tc)
 )
 )


listener_ora23ai=(DESCRIPTION =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.222.8)(PORT=1521)))
listener_ora23aitc=(DESCRIPTION =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.222.18)(PORT=1521)))

拷贝主库密码文件到True Cache库

[oracle@xifenfeidg dbs]$ ls -l orapwora23ai
-rw-r-----. 1 oracle oinstall 2048 Aug  2 19:59 orapwora23ai

主库启动归档模式,并开启force logging

[oracle@xifenfei ~]$ sqlplus / as sysdba

SQL*Plus: Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems on Wed Jul 31 05:24:29 2024
Version 23.5.0.24.07

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 23ai Enterprise Edition Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems
Version 23.5.0.24.07

SQL>  archive log list;
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     3
Current log sequence           2
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

Total System Global Area 2413360688 bytes
Fixed Size                  5363248 bytes
Variable Size             553648128 bytes
Database Buffers         1845493760 bytes
Redo Buffers                8855552 bytes
Database mounted.
SQL> alter database archivelog;

Database altered.

SQL> alter database force logging;

Database altered.

SQL> alter database open;

Database altered.

True Cache库启动到nomount

[oracle@xifenfeidg ~]$ sqlplus / as sysdba

SQL*Plus: Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems on Fri Aug 2 19:57:16 2024
Version 23.5.0.24.07

Copyright (c) 1982, 2024, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup nomount pfile='/tmp/pfile';
ORACLE instance started.

Total System Global Area 2404873776 bytes
Fixed Size                  5363248 bytes
Variable Size             536870912 bytes
Database Buffers         1862270976 bytes
Redo Buffers                 368640 bytes

SQL> SELECT file_name FROM v$passwordfile_info;

FILE_NAME
--------------------------------------------------------------------------------
/u01/app/oracle/product/23ai/db_1/dbs/orapwora23ai

启动True Cache

SQL> CREATE TRUE CACHE;

True Cache created.

SQL> select database_role,open_mode from v$database;

DATABASE_ROLE                    OPEN_MODE
-------------------------------- ----------------------------------------
TRUE CACHE                       READ ONLY WITH APPLY

SQL> select name from v$datafile;

no rows selected

SQL> select member from v$logfile;

MEMBER
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/ORA23AI/ORA23AI_TC/onlinelog/o1_mf_1_mbslm3p3_.log
/u01/app/oracle/oradata/ORA23AI/ORA23AI_TC/onlinelog/o1_mf_2_mbslm3x2_.log
/u01/app/oracle/oradata/ORA23AI/ORA23AI_TC/onlinelog/o1_mf_3_mbslm4bp_.log
/u01/app/oracle/oradata/ORA23AI/ORA23AI_TC/onlinelog/o1_mf_4_mbslm4tp_.log

SQL> select name from v$tempfile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/ORA23AI/S_TEMP_##TC##_ora23ai#tc_8192_1_3_201_1
/u01/app/oracle/oradata/ORA23AI/S_TEMP_##TC##_ora23ai#tc_8192_1_6_202_1
/u01/app/oracle/oradata/ORA23AI/S_TEMP_##TC##_ora23ai#tc_8192_2_3_203_1

SQL> select count(1) from obj$;

  COUNT(1)
----------
     70866

启动True Cache时主库alert日志提示
自动增加log_archive_dest_n记录,传输数据到True Cache库

2024-08-02T20:00:37.340496+08:00
ALTER SYSTEM SET log_archive_dest_state_2='DEFER' SCOPE=MEMORY SID='ora23ai';
2024-08-02T20:00:37.341412+08:00
ALTER SYSTEM SET log_archive_dest_2='service=','"ora23aitc"','LGWR ASYNC NET_TIMEOUT=30 VALID_FOR=(ONLINE_LOGFILE,PRIMARY_ROLE)
   DB_UNIQUE_NAME="ora23ai_tc" REOPEN=15 MAX_FAILURE=20 ROLE="TRUE_CACHE"' SCOPE=MEMORY SID='ora23ai';
2024-08-02T20:00:37.356979+08:00
ALTER SYSTEM SET log_archive_dest_state_2='ENABLE' SCOPE=MEMORY SID='ora23ai';
2024-08-02T20:00:38.734646+08:00
Thread 1 advanced to log sequence 9 (LGWR switch),  current SCN: 4168136
  Current log# 3 seq# 9 mem# 0: /u01/app/oracle/oradata/ORA23AI/redo03.log
2024-08-02T20:00:38.801849+08:00
ARC1 (PID:7534): Archived Log entry 6 added for B-1175412482.T-1.S-8 LOS:0x00000000003f839e NXS:0x00000000003f99c8 NAB:21445 ID 0x8fe90542 LAD:1 [krse.c:4872]
2024-08-02T20:00:39.456381+08:00
ALTER SYSTEM SET log_archive_dest_state_2='ENABLE' SCOPE=MEMORY SID='ora23ai';
2024-08-02T20:00:43.431813+08:00
*** 2024-08-02T20:00:43.431713+08:00
[kradcm.c:1217] kradcm_start_dsndr_from_primary: True Cache: RCVR primary data request receiver process (rmi PID:7854)
    for True Cache DGID:1938295904 started for DEST_ID:2 by FCH (PID:9392)
2024-08-02T20:00:43.448189+08:00
*** 2024-08-02T20:00:43.448096+08:00
[kradcm.c:2906] kradcm_dsndr_main: True Cache: DSNDR primary data block sender process (TT04 PID:7856) for True Cache DGID:1938295904 started for DEST_ID:2
*** 2024-08-02T20:00:43.450891+08:00
[kradcm.c:406] kradcm_connect_to_adc: True Cache DSNDR (PID:7856): Establishing connection to True Cache DGID:1938295904 CONNECTION:ora23aitc
2024-08-02T20:00:43.457328+08:00
*** 2024-08-02T20:00:43.457236+08:00
[kradcm.c:2906] kradcm_dsndr_main: True Cache: DSNDR primary data block sender process (TT06 PID:7858) for True Cache DGID:1938295904 started for DEST_ID:2
*** 2024-08-02T20:00:43.460061+08:00
[kradcm.c:406] kradcm_connect_to_adc: True Cache DSNDR (PID:7858): Establishing connection to True Cache DGID:1938295904 CONNECTION:ora23aitc
*** 2024-08-02T20:00:43.478444+08:00
[kradcm.c:483] kradcm_connect_to_adc: True Cache DSNDR (PID:7856): Successfully connected to True Cache DGID:1938295904 CONNECTION:ora23aitc
*** 2024-08-02T20:00:43.480139+08:00
[kradcm.c:3025] kradcm_dsndr_main: True Cache: DTS data block receiver process started on True Cache DGID:1938295904 PID:9396
*** 2024-08-02T20:00:43.484350+08:00
[kradcm.c:483] kradcm_connect_to_adc: True Cache DSNDR (PID:7858): Successfully connected to True Cache DGID:1938295904 CONNECTION:ora23aitc
*** 2024-08-02T20:00:43.485593+08:00
[kradcm.c:3025] kradcm_dsndr_main: True Cache: DTS data block receiver process started on True Cache DGID:1938295904 PID:9398

True Cache库alert日志信息
1.自动创建standby redo
2.自动创建tempfile
3.启动库到只读状态(非标准dg的只读)
4.启动日志同步(非标准dg的mrp同步)

2024-08-02T20:00:33.507464+08:00
CREATE TRUE CACHE
--ATTENTION--
Default temporary tablespace will be necessary for a locally managed database in future release.
--ATTENTION--
Default temporary tablespace will be necessary for a locally managed database in future release.
2024-08-02T20:00:35.688251+08:00
Control File SGA cache allocated 8388608 bytes.
        Address           : 0x6e03afb8
        Number of buckets : 256
        Number of pools   : 8
        Number of buffers : 1024
        Block size        : 8192
        Trace flags       : 0x0
*** 2024-08-02T20:00:35.702201+08:00
[kcvfdb.c:9694] kcfcmb: True Cache mounted.
Expanded controlfile section 32 from 31 to 128 records
Requested to grow by 97 records; added 5 blocks of records
2024-08-02T20:00:35.703624+08:00
.... (PID:9313): WARNING: STANDBY_FILE_MANAGEMENT initialization parameter is [kcrr.c:2568]
not set to the value "AUTO".
This may cause recovery of the standby database to terminate
prior to applying all available redo data.
It may be necessary to use the ALTER DATABASE CREATE DATAFILE
command to add datafiles created on the primary database.
Lost write protection mode set to "auto"
ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 1 SIZE 200M BLOCKSIZE 512
Completed: ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 1 SIZE 200M BLOCKSIZE 512
ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 2 SIZE 200M BLOCKSIZE 512
Completed: ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 2 SIZE 200M BLOCKSIZE 512
ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 3 SIZE 200M BLOCKSIZE 512
2024-08-02T20:00:36.854038+08:00
Completed: ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 3 SIZE 200M BLOCKSIZE 512
ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 4 SIZE 200M BLOCKSIZE 512
Completed: ALTER DATABASE ADD STANDBY LOGFILE THREAD 1 GROUP 4 SIZE 200M BLOCKSIZE 512
alter database open
True Cache opening with primary at ora23ai.
Checkpoint for True Cache starts at scn 0x00000000003f99c4 Thread 1 RBA 0x000008.000053c5.0010
2024-08-02T20:00:37.334840+08:00
.... (PID:9313): Enable RFS client   [krsr.c:20527]
2024-08-02T20:00:37.335043+08:00
ALTER SYSTEM SET log_archive_config='DG_CONFIG=(ora23ai)' SCOPE=MEMORY;
2024-08-02T20:00:37.335498+08:00
ALTER SYSTEM SET log_archive_dest_1='' SCOPE=MEMORY;
2024-08-02T20:00:37.335878+08:00
ALTER SYSTEM SET log_archive_dest_1='location="/u01/app/oracle/oradata/ORA23AI" mandatory VALID_FOR=(ALL_LOGFILES,ALL_ROLES)' SCOPE=MEMORY;
*** 2024-08-02T20:00:37.342697+08:00
[kcv.c:24912] kcvcrv_adc: New DB SCN 0x00000000003f99c3
.... (PID:9313): Starting Managed Recovery process for Physical Standby [krsm.c:1581]
2024-08-02T20:00:37.381794+08:00
.... (PID:9354): Background Managed Recovery process started [krsm.c:1986]
2024-08-02T20:00:39.457787+08:00
 rfs (PID:9369): krsr_rfs_atc: Identified database type as 'TRUE CACHE': Client is Foreground (PID:7528) [krsr.c:5976]
 rfs (PID:9369): Disable RFS client RFS LogMiner Client [kcrlc.c:1531]
2024-08-02T20:00:39.463332+08:00
 rfs (PID:9373): krsr_rfs_atc: Identified database type as 'TRUE CACHE': Client is ASYNC (PID:7841) [krsr.c:5976]
2024-08-02T20:00:39.467452+08:00
 rfs (PID:9373): Opened LNO:1 for DBID:2414386242 B-1175412482.T-1.S-8.C-0 [krsr.c:19076]
2024-08-02T20:00:39.868908+08:00
 rfs (PID:9377): krsr_rfs_atc: Identified database type as 'TRUE CACHE': Client is ASYNC (PID:7839) [krsr.c:5976]
2024-08-02T20:00:39.872888+08:00
 rfs (PID:9377): Opened LNO:2 for DBID:2414386242 B-1175412482.T-1.S-9.C-0 [krsr.c:19076]
2024-08-02T20:00:42.405225+08:00
 Started logmerger process
2024-08-02T20:00:42.417728+08:00
PR00 (PID:9380): Managed Recovery starting Real Time Apply [krsm.c:15931]
2024-08-02T20:00:42.463844+08:00
Parallel Media Recovery started with 4 slaves
2024-08-02T20:00:42.510016+08:00
Recovery of Standby Redo Log: Thread 1 Group 1 Seq 8 Reading mem 0
  Mem# 0: /u01/app/oracle/oradata/ORA23AI/ORA23AI_TC/onlinelog/o1_mf_1_mbslm3p3_.log
2024-08-02T20:00:42.562877+08:00
Recovery of Standby Redo Log: Thread 1 Group 2 Seq 9 Reading mem 0
  Mem# 0: /u01/app/oracle/oradata/ORA23AI/ORA23AI_TC/onlinelog/o1_mf_2_mbslm3x2_.log
2024-08-02T20:00:43.401465+08:00
*** 2024-08-02T20:00:43.401345+08:00
[kradcm.c:2391] kradcm_fch_main: True Cache: FCH data request sender process (TT02 PID:9392) started
*** 2024-08-02T20:00:43.403321+08:00
[kradcm.c:583] kradcm_fch_connect_primary: FCH (PID:9392): trying to establish connection to primary ora23ai
2024-08-02T20:00:43.414087+08:00
*** 2024-08-02T20:00:43.413868+08:00
[kradcm.c:2376] kradcm_fch_main: FCH process already started. Ignoring request.
[kradcm.c:626] kradcm_fch_connect_primary: FCH (PID:9392) connection established to primary ora23ai
*** 2024-08-02T20:00:43.428869+08:00
[kradcm.c:3279] kradcm_start_dsndr_from_adc: FCH (PID:9392): Message primary DGID:817860583 to start DSNDR for True Cache DGID:1938295904
*** 2024-08-02T20:00:43.432861+08:00
[kradcm.c:3356] kradcm_start_dsndr_from_adc: True Cache: DSNDR process successfully started in primary DGID:817860583 by RCVR PID:7854, initiated by FCH (PID:9392)
2024-08-02T20:00:43.479008+08:00
*** 2024-08-02T20:00:43.478916+08:00
[kradcm.c:1018] kradcm_callback: True Cache: DTS data block receiver process (rmi PID:9396) started for primary DGID:817860583 DSNDR PID:7856
2024-08-02T20:00:43.484358+08:00
*** 2024-08-02T20:00:43.484260+08:00
[kradcm.c:1018] kradcm_callback: True Cache: DTS data block receiver process (rmi PID:9398) started for primary DGID:817860583 DSNDR PID:7858
2024-08-02T20:00:44.152726+08:00
replication_dependency_tracking turned off (no async multimaster replication found)
No Resource Manager plan active
Physical standby database opened for read only access.
Completed: alter database open
Completed: CREATE TRUE CACHE

True Cache 同步测试

--主库创建用户和表
SQL> show pdbs;

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 XIFENFEI                       MOUNTED
SQL> alter session set container=xifenfei;

Session altered.

SQL> alter database open;

Database altered.

SQL> create user xff identified by oracle;

User created.

SQL> grant dba to xff;

Grant succeeded.

SQL> create table xff.t_xff as select * from dba_objects;

Table created.

SQL> select count(1) from xff.t_xff;

  COUNT(1)
----------
     70656

--True Cache库查询结果
SQL> alter session set container=xifenfei;

Session altered.

SQL> show pdbs;

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         3 XIFENFEI                       READ ONLY  NO
SQL> select count(1) from xff.t_xff;

  COUNT(1)
----------
     70656

True Cache DML重定向测试

---True Cache库
SQL> conn xff/oracle@192.168.222.18/xifenfei   
Connected.
SQL> select database_role from v$database;

DATABASE_ROLE
--------------------------------
TRUE CACHE

SQL> alter session enable ADG_REDIRECT_DML;

Session altered.

SQL> delete from t_xff;

70656 rows deleted.

SQL> commit;

Commit complete.

SQL> select count(1) from t_xff;

  COUNT(1)
----------
         0

--主库
SQL> conn xff/oracle@192.168.222.8/xifenfei
Connected.
SQL> select count(1) from t_xff;

  COUNT(1)
----------
         0

True Cache库操作临时表

[oracle@xifenfeidg ~]$ sqlplus xff/oracle@192.168.222.18/xifenfei   

SQL*Plus: Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems on Fri Aug 2 20:47:43 2024
Version 23.5.0.24.07

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 23ai Enterprise Edition Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems
Version 23.5.0.24.07

SQL> select database_role,open_mode from v$database;

DATABASE_ROLE                    OPEN_MODE
-------------------------------- ----------------------------------------
TRUE CACHE                       READ ONLY WITH APPLY

SQL> create global temporary table t_temp as
  2  select * from t_xff;

Table created.

SQL> select count(1) from t_temp;

  COUNT(1)
----------
         0

SQL> insert into t_temp select * from dba_objects;

70663 rows created.

Oracle 支持GB18030-2022

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标题:Oracle 支持GB18030-2022

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

GB18030 是中国政府标准,定义了在中国软件所需的语言和字符集支持. 它是一种与 ISO 10646/Unicode 相匹配的 Unicode 转换格式,并提供涵盖所有 Unicode 的字符库.它最初于 2000 年发布 (GB18030-2000),随后在 2005 年 (GB18030-2005) 和 2022 年 (GB18030-2022) 发布了两次更新.GB18030-2022 在字符覆盖方面的内容等同于Unicode Version 11.0. GB18030-2022 标准的生效日期为 2023 年 8 月 1 日.Oracle 数据库通过 AL32UTF8 Unicode 数据库字符集支持 GB18030 字符的存储.同时还提供客户端专用字符集 ZHS32GB18030,使应用程序可以在客户端处理 GB18030 编码文本的输入/输出,并根据需要进行字符集转换. 截至 2023 年 3 月,现有 Oracle 数据库版本中 ZHS32GB18030 的实施是基于 GB18030-2005.
Oracle Database 23ai 版本中已实现对最新 GB18030-2022 标准的支持.具体来说,Oracle Database 23ai 支持 GB18030-2022 标准的级别 3 的实现,这是 GB18030 最广泛的支持级别. 与此同时,我们还为现有客户在 Oracle Database 19c 各 RU 版本之上通过的一次性补丁来支持 GB18030-2022.Oracle Database 19c 如果要支持 GB18030-2022 需要下载补丁 (#34994751).它可以应用于 Oracle 19c RU 版本 19.3 或更高版本.它需要应用于数据库服务器和客户端. 此补丁仅启用对 Oracle 数据库的 GB18030-2022 支持. 为了使应用程序完全支持 GB18030-2022,应用程序堆栈中的每个组件都需要能够确保处理 GB18030-2022 中的字符.
ZHS32GB18030字符集是仅限客户端的字符集,因此不支持将 ZHS32GB18030 用作NLS_CHARACTERSET.如果您的数据库使用ZHS32GB18030作为NLS_CHARACTERSET,那么强烈建议您尽快迁移到 AL32UTF8.
GB18030编码定义了完整的 Unicode 映射,这意味着如果在 GB18030客户端上使用设置为ZHS32GB18030的NLS_LANG并使用 AL32UTF8(或 UTF8)NLS_CHARACTERSET数据将相互转换和从 AL32UTF8 转换为 并完全保留.在使用非 Unicode GB18030编码和设置为 ZHS32GB18030 的 NLS_LANG 的 GB18030客户端上插入 GB18030数据时,Oracle 会将非 Unicode GB18030代码转换为AL32UTF8代码,并将其作为 AL32UTF8 代码存储在数据库中.在使用非 Unicode GB18030编码和设置为 ZHS32GB18030 的 NLS_LANG 的 GB18030客户端上选择 GB18030-2000 数据时,Oracle 会将 GB18030数据从 AL32UTF8 代码转换为非 Unicode GB18030代码提供给客户端,因此,如果此客户端使用非 Unicode GB18030代码,则数据库端的存储AL32UTF8对客户端完全透明.
通过以下sql验证你的数据库是否支持GB18030-2022
以下结果表示支持GB18030-2022

[oracle@xifenfei ~]$ sqlplus / as sysdba

SQL*Plus: Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems on Thu Aug 1 21:02:36 2024
Version 23.5.0.24.07

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 23ai Enterprise Edition Release 23.0.0.0.0 - for Oracle Cloud and Engineered Systems
Version 23.5.0.24.07

SQL> SELECT DUMP(CONVERT(UNISTR('\FE10\FFFD\E78D'), 'ZHS32GB18030', 'AL16UTF16'), 16) FROM DUAL;

DUMP(CONVERT(UNISTR('\FE10\FFFD\E78D'),'ZHS32GB18030','AL16UTF16'),16)
--------------------------------------------------------------------------------
Typ=1 Len=10: a6,d9,84,31,a4,37,84,31,82,36

以下结果不表示支持GB18030-2022

[oracle@iZbp11c0qyuuo1gr7j98upZ ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu Aug 1 20:46:12 2024

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> SELECT DUMP(CONVERT(UNISTR('\FE10\FFFD\E78D'), 'ZHS32GB18030', 'AL16UTF16'), 16) FROM DUAL;

DUMP(CONVERT(UNISTR('\FE10\FFFD\E78D
------------------------------------
Typ=1 Len=8: 84,31,82,36,a3,bf,a6,d9

参考文档:Oracle 数据库 GB18030-2022 支持方针 (Doc ID 2937409.1)