记录一次ORA-00600[kdsgrp1]分析

数据库版本

SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0      Production
TNS for IBM/AIX RISC System/6000: Version 10.2.0.4.0 - Productio
NLSRTL Version 10.2.0.4.0 - Production

找出报错对象

--方法1
*** SESSION ID:(795.16405) 2012-04-05 09:36:11.958
            row 080095ee.26 continuation at
            file# 32 block# 38382 slot 39 not found
**************************************************
KDSTABN_GET: 0 ..... ntab: 1
curSlot: 39 ..... nrows: 19
**************************************************
SQL> SELECT OWNER, SEGMENT_NAME, SEGMENT_TYPE, TABLESPACE_NAME, A.PARTITION_NAME
  2    FROM DBA_EXTENTS A
  3   WHERE FILE_ID = &FILE_ID
  4     AND &BLOCK_ID BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1;
Enter value for file_id: 32
old   3:  WHERE FILE_ID = &FILE_ID
new   3:  WHERE FILE_ID = 32
Enter value for block_id: 38382
old   4:    AND &BLOCK_ID BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1
new   4:    AND 38382 BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1
OWNER
------------------------------
SEGMENT_NAME
--------------------------------------------------------------------------------
SEGMENT_TYPE       TABLESPACE_NAME                PARTITION_NAME
------------------ ------------------------------ ------------------------------
AHV8
TBL_IVR_LOG
TABLE PARTITION    CSS_PARTITION                  IVR_LOG_2012_MONTH04
--方法2
*** 2012-04-05 09:36:11.965
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []
Current SQL statement for this session:
INSERT INTO TBL_CONTACT_INFO_FAILED_TMP
select * from TBL_IVR_LOG
SO: 70000017f954f50, type: 4, owner: 70000017f65a840, flag: INIT/-/-/0x00
(session) sid: 795 trans: 70000017464a1e8, creator: 70000017f65a840, flag: (40110041) USR/- BSY/-/-/-/-/-
              DID: 0002-0067-000305BD, short-term DID: 0002-0067-000305BE
              txn branch: 0
              oct: 2, prv: 0, sql: 70000015180ee98, psql: 700000180d67550, user: 49/AHV8
service name: SYS$USERS
O/S info: user: oracle10, term: UNKNOWN, ospid: 12976218, machine: zwq_kfdb2
              program: oracle@zwq_kfdb2 (J002)
last wait for 'db file sequential read' blocking sess=0x0 seq=226 wait_time=17071 seconds since wait started=1
                file#=20, block#=95ee, blocks=1
--方法3
Block header dump:  0x080095ee
 Object id on Block? Y
 seg/obj: 0x11eeb  csc: 0x6f2.848e814  itc: 2  flg: E  typ: 1 - DATA
     brn: 1  bdba: 0x7c09c89 ver: 0x01 opc: 0
     inc: 0  exflg: 0
SQL> select to_number('11eeb','xxxxxxxx') from dual;
TO_NUMBER('11EEB','XXXXXXXX')
-----------------------------
                        73451
SQL> select owner,object_name,subobject_name,object_type from dba_objects where data_object_id='73451';
OWNER
------------------------------
OBJECT_NAME
--------------------------------------------------------------------------------
SUBOBJECT_NAME                 OBJECT_TYPE
------------------------------ -------------------
AHV8
TBL_IVR_LOG
IVR_LOG_2012_MONTH04           TABLE PARTITION

验证是否真的坏块

SQL> select name from v$datafile where file#=32;
NAME
------------------------------------------------------
/dev/rdb1_data27
[zwq_kfdb2:/home/oraeye]dbv file='/dev/rdb1_data27' blocksize=8192
DBVERIFY: Release 10.2.0.4.0 - Production on Fri Apr 13 15:33:10 2012
Copyright (c) 1982, 2007, Oracle.  All rights reserved.
DBVERIFY - Verification starting : FILE = /dev/rdb1_data27
DBVERIFY - Verification complete
Total Pages Examined         : 1048448
Total Pages Processed (Data) : 947357
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing   (Index): 0
Total Pages Processed (Other): 4756
Total Pages Processed (Seg)  : 0
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 96335
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Highest block SCN            : 297329920 (1778.297329920)
SQL> select count(*) from AHV8.TBL_IVR_LOG partition(IVR_LOG_2012_MONTH04);
  COUNT(*)
----------
   8798030

总结：很明显这次出现这个问题，因为内存中出现坏块导致，经过一段时间buffer cache中的坏块内容已经被老化，所以现在不能重现(甚至不用做任何操作)。如果内存中出现了坏块，而且还没有被老化掉，可以刷新data buffer;如果是数据块出现坏块，根据实际情况决定处理

DB2中schema管理

0.DB2版本信息

[db2inst1@xifenfei ~]$ db2level
DB21085I  Instance "db2inst1" uses "32" bits and DB2 code release "SQL09050"
with level identifier "03010107".
Informational tokens are "DB2 v9.5.0.0", "s071001", "LINUXIA3295", and Fix Pack
"0".
Product is installed at "/opt/db2/V9.5".

1.显示syscat.schemata视图结构

[db2inst1@xifenfei ~]$ db2 "describe table syscat.schemata"
                                Data type                     Column
Column name                     schema    Data type name      Length     Scale Nulls
------------------------------- --------- ------------------- ---------- ----- ------
SCHEMANAME                      SYSIBM    VARCHAR                    128     0 No
OWNER                           SYSIBM    VARCHAR                    128     0 No
OWNERTYPE                       SYSIBM    CHARACTER                    1     0 No
DEFINER                         SYSIBM    VARCHAR                    128     0 No
DEFINERTYPE                     SYSIBM    CHARACTER                    1     0 No
CREATE_TIME                     SYSIBM    TIMESTAMP                   10     0 No
REMARKS                         SYSIBM    VARCHAR                    254     0 Yes

2.查询当前存在schema

[db2inst1@xifenfei ~]$ db2 "select SCHEMANAME,owner,CREATE_TIME from syscat.schemata"
SCHEMANAME                 OWNER                      CREATE_TIME
------------            ------------                   ----------------------------
SYSIBM                     SYSIBM                     2012-03-25-15.07.07.196612
SYSCAT                     SYSIBM                     2012-03-25-15.07.07.196612
SYSFUN                     SYSIBM                     2012-03-25-15.07.07.196612
SYSSTAT                    SYSIBM                     2012-03-25-15.07.07.196612
SYSPROC                    SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMADM                  SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMINTERNAL             SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMTS                   SYSIBM                     2012-03-25-15.07.07.196612
NULLID                     SYSIBM                     2012-03-25-15.07.23.011671
SQLJ                       SYSIBM                     2012-03-25-15.07.54.575637
SYSTOOLS                   DB2INST1                   2012-03-25-15.09.01.964744
  11 record(s) selected.

3.显示创建schema

[db2inst1@xifenfei ~]$  db2 "create schema xifenfei"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "select SCHEMANAME,owner,CREATE_TIME from syscat.schemata"
SCHEMANAME                 OWNER                      CREATE_TIME
------------            ------------                  ----------------------------
SYSIBM                     SYSIBM                     2012-03-25-15.07.07.196612
SYSCAT                     SYSIBM                     2012-03-25-15.07.07.196612
SYSFUN                     SYSIBM                     2012-03-25-15.07.07.196612
SYSSTAT                    SYSIBM                     2012-03-25-15.07.07.196612
SYSPROC                    SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMADM                  SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMINTERNAL             SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMTS                   SYSIBM                     2012-03-25-15.07.07.196612
NULLID                     SYSIBM                     2012-03-25-15.07.23.011671
SQLJ                       SYSIBM                     2012-03-25-15.07.54.575637
SYSTOOLS                   DB2INST1                   2012-03-25-15.09.01.964744
XIFENFEI                   DB2INST1                   2012-04-03-12.01.12.724932
  12 record(s) selected.

4.隐式创建schema

[db2inst1@xifenfei ~]$ db2 "create table xff.t_xifenfei(id int,name varchar(100))"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "select SCHEMANAME,owner,CREATE_TIME from syscat.schemata"
SCHEMANAME                 OWNER                      CREATE_TIME
------------            ------------                 ----------------------------
SYSIBM                     SYSIBM                     2012-03-25-15.07.07.196612
SYSCAT                     SYSIBM                     2012-03-25-15.07.07.196612
SYSFUN                     SYSIBM                     2012-03-25-15.07.07.196612
SYSSTAT                    SYSIBM                     2012-03-25-15.07.07.196612
SYSPROC                    SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMADM                  SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMINTERNAL             SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMTS                   SYSIBM                     2012-03-25-15.07.07.196612
NULLID                     SYSIBM                     2012-03-25-15.07.23.011671
SQLJ                       SYSIBM                     2012-03-25-15.07.54.575637
SYSTOOLS                   DB2INST1                   2012-03-25-15.09.01.964744
XIFENFEI                   DB2INST1                   2012-04-03-12.01.12.724932
XFF                        SYSIBM                     2012-04-03-12.03.12.581260
  13 record(s) selected.

隐式创建schema的所属用户会是SYSIBM(存放系统数据字典表SCHEMA)

5.删除schema

[db2inst1@xifenfei ~]$ db2 "drop schema xff"
DB21034E  The command was processed as an SQL statement because it was not a
valid Command Line Processor command.  During SQL processing it returned:
SQL0104N  An unexpected token "END-OF-STATEMENT" was found following "drop
schema xff".  Expected tokens may include:  "RESTRICT".  SQLSTATE=42601
[db2inst1@xifenfei ~]$  db2 drop schema xff restrict
DB21034E  The command was processed as an SQL statement because it was not a
valid Command Line Processor command.  During SQL processing it returned:
SQL0478N  DROP, ALTER, TRANSFER OWNERSHIP or REVOKE on object type "SCHEMA"
cannot be processed because there is an object "XFF.T_XIFENFEI", of type
"TABLE", which depends on it.  SQLSTATE=42893
[db2inst1@xifenfei ~]$ db2 "drop table xff.t_xifenfei"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$  db2 drop schema xff restrict
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "select SCHEMANAME,owner,CREATE_TIME from syscat.schemata"
SCHEMANAME                 OWNER                      CREATE_TIME
------------            ------------                 ----------------------------
SYSIBM                     SYSIBM                     2012-03-25-15.07.07.196612
SYSCAT                     SYSIBM                     2012-03-25-15.07.07.196612
SYSFUN                     SYSIBM                     2012-03-25-15.07.07.196612
SYSSTAT                    SYSIBM                     2012-03-25-15.07.07.196612
SYSPROC                    SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMADM                  SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMINTERNAL             SYSIBM                     2012-03-25-15.07.07.196612
SYSIBMTS                   SYSIBM                     2012-03-25-15.07.07.196612
NULLID                     SYSIBM                     2012-03-25-15.07.23.011671
SQLJ                       SYSIBM                     2012-03-25-15.07.54.575637
SYSTOOLS                   DB2INST1                   2012-03-25-15.09.01.964744
XIFENFEI                   DB2INST1                   2012-04-03-12.01.12.724932
  12 record(s) selected.

删除schema需要使用restrict关键字,而且该schema中无对象存在.

在DB2中的schema的概念和ORACLE中的概念有着本质的区别：在ORACLE中schema和用户是同一个;在DB2中schema不一定是用户,因为db2内部没有用户的概念,连接用户必须是操作系统用户.

DB2中产生唯一值三种方式

一.Genearate_unique函数

[db2inst1@xifenfei ~]$ db2 "create table xifenfei.t_gu(custno char(13) for bit data,
> custname varchar(16))"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$  db2 "insert into xifenfei.t_gu values
> (generate_unique(),'www.xifenfei.com'),(generate_unique(),'xifenfei')"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "select * from xifenfei.t_gu"
CUSTNO                        CUSTNAME
----------------------------- ----------------
x'20120403054630527862000000' www.xifenfei.com
x'20120403054630527940000000' xifenfei
  2 record(s) selected.

generate_unique是按照国际标准时间(UTC)生成的当前时间戳加上当前数据库分区号，包含13个字节的字符串。如果调整了系统时间可能会出现重复

二.序列(Sequence)

[db2inst1@xifenfei ~]$ db2 "create sequence xifenfei.xff_seq
> as bigint
> start with 1
> increment by 1
> no maxvalue
> cycle
> cache 10"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "create table xifenfei.t_seq(xff_id bigint,
> custname varchar(16))"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "insert into xifenfei.t_seq values(nextval
> for xifenfei.xff_seq,'www.xifenfei.com'), (nextval for xifenfei.xff_seq,'xifenfei')"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "select * from xifenfei.t_seq"
XFF_ID               CUSTNAME
-------------------- ----------------
                   1 www.xifenfei.com
                   2 xifenfei
  2 record(s) selected.

和ORACLE的sequence基本相同，只是在oracle中是sequence.nextval这里改为了nextnvl for seqence

三.自增字段

--1.generated always as identity方式(不能人工干预插入数值)
[db2inst1@xifenfei ~]$ db2 "create table xifenfei.t_ind_a(xff_id bigint not null generated always
> as identity(start with 10,increment by 1,minvalue 10,maxvalue 1000000,no cycle,nocache,no order),
> custname varchar(16))"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "insert into xifenfei.t_ind_a(custname) values('www.xifenfei.com')"
DB20000I  The SQL command completed successfully.
--指定值插入失败
[db2inst1@xifenfei ~]$ db2 "insert into xifenfei.t_ind_a(xff_id,custname) values(11,'XIFENFEI')"
DB21034E  The command was processed as an SQL statement because it was not a
valid Command Line Processor command.  During SQL processing it returned:
SQL0798N  A value cannot be specified for column "XFF_ID" which is defined as
GENERATED ALWAYS.  SQLSTATE=428C9
[db2inst1@xifenfei ~]$ db2 "select * from xifenfei.t_ind_a"
XFF_ID               CUSTNAME
-------------------- ----------------
                  10 www.xifenfei.com
  1 record(s) selected.
--1.generated by default as identity方式(可以人工干预插入数值)
[db2inst1@xifenfei ~]$ db2 "create table xifenfei.t_ind_d(xff_id bigint not null generated by default
> as identity (start with 10,increment by 1,minvalue 10,maxvalue 1000000,no cycle,nocache,no order),
> custname varchar(16))"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "insert into xifenfei.t_ind_d(custname) values('www.xifenfei.com')"
DB20000I  The SQL command completed successfully.
--指定值插入成功
[db2inst1@xifenfei ~]$ db2 "insert into xifenfei.t_ind_d(xff_id,custname) values(11,'XIFENFEI')"
DB20000I  The SQL command completed successfully.
[db2inst1@xifenfei ~]$ db2 "select * from xifenfei.t_ind_d"
XFF_ID               CUSTNAME
-------------------- ----------------
                  10 www.xifenfei.com
                  11 XIFENFEI
  2 record(s) selected.

这个功能和sql server/mysql的自增长列很相似，给出了两种方式选择，使得比它们更加灵活

ORACLE 十进制与二进制互转函数

十进制转换二进制

CREATE OR REPLACE FUNCTION NUMBER_TO_BIT(V_NUM NUMBER)
RETURN VARCHAR IS V_RTN VARCHAR(8);--注意返回列长度
  V_N1  NUMBER;
  V_N2  NUMBER;
BEGIN
V_N1 := V_NUM;
    LOOP
      V_N2  := MOD(V_N1, 2);
      V_N1  := ABS(TRUNC(V_N1 / 2));
      V_RTN := TO_CHAR(V_N2) || V_RTN;
      EXIT WHEN V_N1 = 0;
    END LOOP;
--返回二进制长度
 SELECT lpad(V_RTN,8,0)
    INTO   V_RTN
    FROM dual;
return V_RTN;
end;
SQL> select NUMBER_TO_BIT(208) from dual;
NUMBER_TO_BIT(208)
-----------------------------
11010000

二进制转换十进制

CREATE OR REPLACE FUNCTION BIT_TO_NUMBER(P_BIN IN VARCHAR2) RETURN NUMBER AS
  V_SQL    VARCHAR2(30000) := 'SELECT BIN_TO_NUM(';
  V_RETURN NUMBER;
BEGIN
  IF LENGTH(P_BIN) >= 256 THEN
    RAISE_APPLICATION_ERROR(-20001, 'INPUT BIN TOO LONG!');
  END IF;
  IF LTRIM(P_BIN, '01') IS NOT NULL THEN
    RAISE_APPLICATION_ERROR(-20002, 'INPUT STR IS NOT VALID BIN VALUE!');
  END IF;
  FOR I IN 1 .. LENGTH(P_BIN) LOOP
    V_SQL := V_SQL || SUBSTR(P_BIN, I, 1) || ',';
  END LOOP;
  V_SQL := RTRIM(V_SQL, ',') || ') FROM DUAL';
  EXECUTE IMMEDIATE V_SQL
    INTO V_RETURN;
  RETURN V_RETURN;
END;
SQL> SELECT BIT_TO_NUMBER('11010000') FROM DUAL;
BIT_TO_NUMBER('11010000')
-------------------------
                      208

ORACLE ROWID 分析

ROWID知识补充
Rowid改为：OOOOOOFFFBBBBBBRRR，占用10个字节（32bit data_object_id +10bit rfile# +22bit block +16bit）。其中，O是对象ID，F是文件ID，B是块ID，R是行ID。

Rowid对应值对应10十进制值

A-Z <==> 0 - 25 (26)
a-z <==> 26 - 51 (26)
0-9 <==> 52 - 61 (10)
+/ <==> 62 - 63 (2)

模拟环境

SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bi
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> create table t_xff (id number,name varchar2(100));
Table created.
SQL> insert into t_xff values(1,'www.xifenfei.com');
1 row created.
SQL> commit;
Commit complete.
SQL>  alter table t_xff move;
Table altered.
SQL> select rowid,a.* from t_xff a;
ROWID                      ID NAME
------------------ ---------- ------------------------------
AADye6AAEAAAtCcAAA          1 www.xifenfei.com

相关值计算

Data Object number = AADye6
File               = AAE
Block              = AAAtCc
ROW                = AAA
DATA_OBJECT_ID
AADye6
58*64^0+30*64^1+50*64^2+3*64^3+0*64^4+0*64^5
58+1920+204800+786432+0+0=993210
RFILE#
AAE
4*64^0+0*64^1+0*64^2
4+0+0=4
BLOCK
AAAtCc
28*64^0+2*64^1+45*64^2+0*64^3+0*64^4+0*64^5
28+128+184320+0+0+0=184476

验证结果

SQL> select object_id,data_object_id from dba_objects where object_name='T_XFF';
 OBJECT_ID DATA_OBJECT_ID
---------- --------------
    993209         993210
SQL> select dbms_rowid.rowid_object('AADye6AAEAAAtCcAAA') data_object_id#,
  2         dbms_rowid.rowid_relative_fno('AADye6AAEAAAtCcAAA') rfile#,
  3         dbms_rowid.rowid_block_number('AADye6AAEAAAtCcAAA') block#,
  4     dbms_rowid.rowid_row_number('AADye6AAEAAAtCcAAA') row# from dual;
DATA_OBJECT_ID#     RFILE#     BLOCK#       ROW#
--------------- ---------- ---------- ----------
         993210          4     184476          0

dump方式分析

SQL> select rowid,dump(rowid) from t_xff;
ROWID              DUMP(ROWID)
------------------ ------------------------------------------
AADye6AAEAAAtCcAAA Typ=69 Len=10: 0,15,39,186,1,2,208,156,0,0
DATA_OBJECT_ID
0,15,39,186
15*256*256+39*256+186=993210
RFILE#
1,2(取前10位)
000000001 00 =4
BLOCK
2,208,156(取后22位)
000010 11010000 10011100
2^17+208*256+156=184476

DB2远程登录配置

1.服务器端操作

[db2inst2@xifenfei ~]$ netstat -nap |grep db2sysc
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:55554               0.0.0.0:*                   LISTEN      8072/db2sysc 0
[db2inst2@xifenfei ~]$  db2 list db directory
 System Database Directory
 Number of entries in the directory = 1
Database 1 entry:
 Database alias                       = XIFENFEI
 Database name                        = XIFENFEI
 Local database directory             = /home/db2inst2/xifenfei
 Database release level               = c.00
 Comment                              =
 Directory entry type                 = Indirect
 Catalog database partition number    = 0
 Alternate server hostname            =
 Alternate server port number         =
--配置监听协议
[db2inst2@xifenfei ~]$ db2set db2comm=tcpip
--配置实例端口
[db2inst2@xifenfei ~]$ db2 update dbm cfg using svcename 5000
DB20000I  The UPDATE DATABASE MANAGER CONFIGURATION command completed
successfully.
--重启生效
[db2inst2@xifenfei ~]$ db2stop
04/02/2012 12:33:36     0   0   SQL1064N  DB2STOP processing was successful.
SQL1064N  DB2STOP processing was successful.
[db2inst2@xifenfei ~]$ db2start
04/02/2012 12:33:41     0   0   SQL1063N  DB2START processing was successful.
SQL1063N  DB2START processing was successful.
[db2inst2@xifenfei ~]$ netstat -nap |grep db2sysc
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:50000               0.0.0.0:*                   LISTEN      8462/db2sysc 0

2.客户端配置

C:\Windows\system32>db2 catalog tcpip node vm_xff remote 192.168.1.90 server 50000
DB21061E  未初始化命令行环境。
--DB21061E错误解决
C:\Windows\system32>db2cmd
--编目节点
C:\Windows\system32>db2 catalog tcpip node vm_xff remote 192.168.1.90 server 50000
DB20000I  CATALOG TCPIP NODE命令成功完成。
DB21056W  直到刷新目录高速缓存之后，目录更改才生效。
--编目数据库
C:\Windows\system32>db2 catalog db xifenfei as xifenfei at node vm_xff
DB20000I  CATALOG DATABASE命令成功完成。
DB21056W  直到刷新目录高速缓存之后，目录更改才生效。
C:\Windows\system32> db2 list node directory
 节点目录
 目录中的条目数 = 1
节点 1 条目：
 节点名                            = VM_XFF
 注释                            =
 目录条目类型                    = LOCAL
 协议                            = TCPIP
 主机名                          = 192.168.1.90
 服务名称             = 50000
--terminate使操作生效
C:\Windows\system32>db2 terminate
DB20000I  TERMINATE命令成功完成。

3.验证登陆

[db2inst2@xifenfei sqldbdir]$ db2 connect to xifenfei user db2inst2 using xifenfei
   Database Connection Information
 Database server        = DB2/LINUX 9.5.0
 SQL authorization ID   = DB2INST1
 Local database alias   = XIFENFEI
[db2inst1@xifenfei ~]$ db2 list applications
Auth Id  Application    Appl.      Application Id                                                 DB       # of
         Name           Handle                                                                    Name    Agents
-------- -------------- ---------- -------------------------------------------------------------- -------- -----
DB2INST2 db2bp.exe      45         192.168.1.1.38849.120411160214                                 XIFENFEI   1
DB2INST2 db2bp          50         *LOCAL.db2inst1.120402072313                                   XIFENFEI   1

oracle 9i数据库存在大量ora_j0**进程

1.发现多个ora_j0**进程
可以发现进程重启非常频繁,大概1分钟重启一次，启动ora_j0**的个数为20个

[prmsvr2:/home/oraeye]ps -ef|grep ora_j0|grep -v grep
oracle 213120 1 0 11:01:55 - 0:00 ora_j019_prmdb2
oracle 282808 1 0 11:01:55 - 0:00 ora_j012_prmdb2
oracle 299178 1 0 11:01:54 - 0:00 ora_j004_prmdb2
oracle 434212 1 0 11:01:55 - 0:00 ora_j014_prmdb2
oracle 475238 1 0 11:01:54 - 0:00 ora_j011_prmdb2
oracle 487562 1 0 11:01:54 - 0:00 ora_j008_prmdb2
oracle 614612 1 0 11:01:55 - 0:00 ora_j017_prmdb2
oracle 717008 1 0 11:01:54 - 0:00 ora_j009_prmdb2
oracle 721012 1 0 11:01:54 - 0:00 ora_j006_prmdb2
oracle 749618 1 0 11:01:54 - 0:00 ora_j007_prmdb2
oracle 770268 1 0 11:01:54 - 0:00 ora_j005_prmdb2
oracle 811114 1 0 11:01:55 - 0:00 ora_j015_prmdb2
oracle 831550 1 0 11:01:55 - 0:00 ora_j016_prmdb2
oracle 847940 1 0 11:01:55 - 0:00 ora_j013_prmdb2
oracle 938076 1 0 11:01:54 - 0:00 ora_j010_prmdb2
oracle 942224 1 0 11:01:54 - 0:00 ora_j002_prmdb2
oracle 974968 1 0 11:01:55 - 0:00 ora_j018_prmdb2
oracle 434602 1 0 11:01:54 - 0:00 ora_j000_prmdb2
oracle 668104 1 0 11:01:54 - 0:00 ora_j003_prmdb2
oracle 983424 1 0 11:01:54 - 0:00 ora_j001_prmdb2
[prmsvr2:/home/oraeye]ps -ef|grep ora_j0|grep -v grep
oracle 454676 1 1 11:02:56 - 0:00 ora_j012_prmdb2
oracle 696366 1 1 11:02:56 - 0:00 ora_j011_prmdb2
oracle 749628 1 1 11:02:56 - 0:00 ora_j019_prmdb2
oracle 770276 1 1 11:02:56 - 0:00 ora_j017_prmdb2
oracle 794824 1 1 11:02:56 - 0:00 ora_j010_prmdb2
oracle 827464 1 1 11:02:55 - 0:00 ora_j009_prmdb2
oracle 831560 1 1 11:02:56 - 0:00 ora_j016_prmdb2
oracle 847946 1 1 11:02:56 - 0:00 ora_j014_prmdb2
oracle 888972 1 1 11:02:55 - 0:00 ora_j007_prmdb2
oracle 934064 1 1 11:02:55 - 0:00 ora_j008_prmdb2
oracle 938080 1 1 11:02:56 - 0:00 ora_j013_prmdb2
oracle 942232 1 0 11:02:55 - 0:00 ora_j001_prmdb2
oracle 962760 1 1 11:02:55 - 0:00 ora_j006_prmdb2
oracle 434608 1 1 11:02:55 - 0:00 ora_j004_prmdb2
oracle 528810 1 2 11:02:56 - 0:00 ora_j015_prmdb2
oracle 549228 1 1 11:02:55 - 0:00 ora_j005_prmdb2
oracle 668112 1 1 11:02:55 - 0:00 ora_j003_prmdb2
oracle 709090 1 1 11:02:55 - 0:00 ora_j002_prmdb2
oracle 905720 1 2 11:02:56 - 0:00 ora_j018_prmdb2
oracle 971040 1 1 11:02:55 - 0:00 ora_j000_prmdb2
[prmsvr2:/home/oraeye]ps -ef|grep ora_j0|grep -v grep |wc -l
      20

2.其他参数

SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
PL/SQL Release 9.2.0.8.0 - Production
CORE    9.2.0.8.0       Production
TNS for IBM/AIX RISC System/6000: Version 9.2.0.8.0 - Production
NLSRTL Version 9.2.0.8.0 - Production
SQL> show parameter job;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
job_queue_processes                  integer     20
SQL> select count(*) from DBA_JOBS_RUNNING;
  COUNT(*)
----------
         0
SQL> SELECT count(*) FROM v$session_wait where event='jobq slave wait';
  COUNT(*)
----------
        20
SQL> select count(*) from dba_jobs;
  COUNT(*)
----------
         2
SQL> col name for a32
SQL> col value for a24
SQL> col description for a70
SQL> select a.ksppinm name,b.ksppstvl value,a.ksppdesc description
  2    from x$ksppi a,x$ksppcv b
  3   where a.inst_id = USERENV ('Instance')
  4     and b.inst_id = USERENV ('Instance')
  5     and a.indx = b.indx
  6     and upper(a.ksppinm) LIKE upper('%&param%')
  7  order by name
  8  /
Enter value for param: _JOB_QUEUE_INTERVAL
old   6:    and upper(a.ksppinm) LIKE upper('%&param%')
new   6:    and upper(a.ksppinm) LIKE upper('%_JOB_QUEUE_INTERVAL%')
NAME                             VALUE
-------------------------------- ------------------------
DESCRIPTION
----------------------------------------------------------------------
_job_queue_interval              5
Wakeup interval in seconds for job queue co-ordinator

3.对cjq进程做10046

[prmsvr2:/oracle]ps -ef|grep cjq
  oracle  327870       1   0   Feb 10      - 770:39 ora_cjq0_prmdb2
  oracle  929872  794774   0 13:24:59  pts/2  0:00 grep cjq
SQL> oradebug setospid 327870
Oracle pid: 19, Unix process pid: 327870, image: oracle@prmsvr2 (CJQ0)
SQL> oradebug unlimit
Statement processed.
SQL> oradebug event 10046 trace name context forever, level 12
Statement processed.
SQL>  oradebug event 10046 trace name context off;
Statement processed.
SQL> oradebug tracefile_name
/oracle/app/admin/prmdb/bdump/prmdb2_cjq0_327870.trc

4.查看cjq的10046文件
发现大量的process startup等待，而且两次批量运行之间的时间间隔在1分钟左右。

WAIT #0: nam='process startup' ela= 59247 p1=74 p2=0 p3=0
WAIT #0: nam='process startup' ela= 51486 p1=74 p2=1 p3=0
WAIT #0: nam='process startup' ela= 51629 p1=74 p2=2 p3=0
WAIT #0: nam='process startup' ela= 48205 p1=74 p2=3 p3=0
WAIT #0: nam='process startup' ela= 47625 p1=74 p2=4 p3=0
WAIT #0: nam='process startup' ela= 55945 p1=74 p2=5 p3=0
WAIT #0: nam='process startup' ela= 47633 p1=74 p2=6 p3=0
WAIT #0: nam='process startup' ela= 51809 p1=74 p2=7 p3=0
WAIT #0: nam='process startup' ela= 57371 p1=74 p2=8 p3=0
WAIT #0: nam='process startup' ela= 50249 p1=74 p2=9 p3=0
WAIT #0: nam='process startup' ela= 51683 p1=74 p2=10 p3=0
WAIT #0: nam='process startup' ela= 47933 p1=74 p2=11 p3=0
WAIT #0: nam='process startup' ela= 47699 p1=74 p2=12 p3=0
WAIT #0: nam='process startup' ela= 47800 p1=74 p2=13 p3=0
WAIT #0: nam='process startup' ela= 47947 p1=74 p2=14 p3=0
WAIT #0: nam='process startup' ela= 52071 p1=74 p2=15 p3=0
WAIT #0: nam='process startup' ela= 47776 p1=74 p2=16 p3=0
WAIT #0: nam='process startup' ela= 47764 p1=74 p2=17 p3=0
WAIT #0: nam='process startup' ela= 47684 p1=74 p2=18 p3=0
WAIT #0: nam='process startup' ela= 47790 p1=74 p2=19 p3=0

通过O记的大力帮助,终于找出了该问题的原因:Bug 4339922: CJQ PROCESS WAKE UP JOB QUEUE PROCESSES EVERY 1 MINUTES.(THERE IS NO JOBS).因为9i的版本oracle不再提供新补丁支持,ora_j0**相关进程不停重启不太占用系统和数据库资源,在不能升级数据库的情况下,可以考虑设置job_queue_processes到一个合适值,然后忽略该问题。

DB2表空间管理(2)—DMS空间管理篇

db2的DMS表空间管理主要有Exent/Reduce/Resize/Add/begin new stripe set,下面分别对这几项进行介绍
Exent扩展已有容器

[db2inst2@xifenfei ~]$ db2 list tablespace containers for 3 show detail
            Tablespace Containers for Tablespace 3
 Container ID                         = 0
 Name                                 = /home/db2inst2/dms/tbs_data01.dbf
 Type                                 = File
 Total pages                          = 3200
 Useable pages                        = 3168
 Accessible                           = Yes
SQL> select 3200*32/1024 from dual;
3200*32/1024
------------
         100
[db2inst2@xifenfei ~]$ db2 "alter tablespace tbs_data extend (file
'/home/db2inst2/dms/tbs_data01.dbf' 20M)"
DB20000I  The SQL command completed successfully.
[db2inst2@xifenfei ~]$ db2 list tablespace containers for 3 show detail
            Tablespace Containers for Tablespace 3
 Container ID                         = 0
 Name                                 = /home/db2inst2/dms/tbs_data01.dbf
 Type                                 = File
 Total pages                          = 3840
 Useable pages                        = 3808
 Accessible                           = Yes
SQL> select 3840*32/1024 from dual;
3840*32/1024
------------
         120

Reduce缩减已有容器

[db2inst2@xifenfei ~]$ db2 "alter tablespace tbs_data reduce (file
'/home/db2inst2/dms/tbs_data01.dbf' 40M)"
DB20000I  The SQL command completed successfully.
[db2inst2@xifenfei ~]$ db2 list tablespace containers for 3 show detail
            Tablespace Containers for Tablespace 3
 Container ID                         = 0
 Name                                 = /home/db2inst2/dms/tbs_data01.dbf
 Type                                 = File
 Total pages                          = 2560
 Useable pages                        = 2528
 Accessible                           = Yes
SQL> select 2560*32/1024 from dual;
2560*32/1024
------------
          80

Resize重设容器大小

[db2inst2@xifenfei ~]$ db2 "alter tablespace tbs_data resize (file
'/home/db2inst2/dms/tbs_data01.dbf' 30M)"
DB20000I  The SQL command completed successfully.
[db2inst2@xifenfei ~]$ db2 list tablespace containers for 3 show detail
            Tablespace Containers for Tablespace 3
 Container ID                         = 0
 Name                                 = /home/db2inst2/dms/tbs_data01.dbf
 Type                                 = File
 Total pages                          = 960
 Useable pages                        = 928
 Accessible                           = Yes
SQL> select 960*32/1024 from dual;
960*32/1024
-----------
         30

Add增加新容器

[db2inst2@xifenfei ~]$ db2 "alter tablespace tbs_data add (file
'/home/db2inst2/dms/tbs_data02.dbf' 30M)"
DB20000I  The SQL command completed successfully.
[db2inst2@xifenfei ~]$ db2 list tablespace containers for 3 show detail
            Tablespace Containers for Tablespace 3
 Container ID                         = 0
 Name                                 = /home/db2inst2/dms/tbs_data01.dbf
 Type                                 = File
 Total pages                          = 960
 Useable pages                        = 928
 Accessible                           = Yes
 Container ID                         = 1
 Name                                 = /home/db2inst2/dms/tbs_data02.dbf
 Type                                 = File
 Total pages                          = 960
 Useable pages                        = 928
 Accessible                           = Yes

Add增加新容器后，会在容器件进行数据Rebalance

begin new stripe set增加新容器

[db2inst2@xifenfei ~]$ db2 "alter tablespace tbs_data begin new stripe set (file
'/home/db2inst2/dms/tbs_data03.dbf' 10M)"
DB20000I  The SQL command completed successfully.
[db2inst2@xifenfei ~]$ db2 list tablespace containers for 3 show detail
            Tablespace Containers for Tablespace 3
 Container ID                         = 0
 Name                                 = /home/db2inst2/dms/tbs_data01.dbf
 Type                                 = File
 Total pages                          = 960
 Useable pages                        = 928
 Accessible                           = Yes
 Container ID                         = 1
 Name                                 = /home/db2inst2/dms/tbs_data02.dbf
 Type                                 = File
 Total pages                          = 960
 Useable pages                        = 928
 Accessible                           = Yes
 Container ID                         = 2
 Name                                 = /home/db2inst2/dms/tbs_data03.dbf
 Type                                 = File
 Total pages                          = 320
 Useable pages                        = 288
 Accessible                           = Yes

begin new stripe set当已有容器使用完之后，再使用新增加容器

DB2表空间管理(1)—基础篇

1.创建数据库

[db2inst2@xifenfei ~]$ db2 "create database xifenfei automatic storage yes
on /home/db2inst2/dbauto dbpath on /home/db2inst2/xifenfei
using codeset utf-8 territory cn collate using system"
DB20000I  The CREATE DATABASE command completed successfully.

DBPATH ON表示数据库目录
USING CONDESET codeset TERRITORY territory指定数据库编码集(Codeset)和区域(Territory)
automatic storage yes on /home/db2inst2/dbauto 表示启用自动存储管理，on指定路径

2.查看数据库

[db2inst2@xifenfei ~]$ db2 list db directory
 System Database Directory
 Number of entries in the directory = 1
Database 1 entry:
 Database alias                       = XIFENFEI
 Database name                        = XIFENFEI
 Local database directory             = /home/db2inst2/xifenfei
 Database release level               = c.00
 Comment                              =
 Directory entry type                 = Indirect
 Catalog database partition number    = 0
 Alternate server hostname            =
 Alternate server port number         =

3.连接数据库

[db2inst2@xifenfei ~]$ db2 connect to xifenfei
   Database Connection Information
 Database server        = DB2/LINUX 9.5.0
 SQL authorization ID   = DB2INST2
 Local database alias   = XIFENFEI

4.创建缓冲池

[db2inst2@xifenfei ~]$ db2 "create bufferpool bp32k size 100 pagesize 32k"
DB20000I  The SQL command completed successfully.

DB2默认创建库指创建4k的bufferpool，因为下面需要创建32k的表空间，所以需要先创建32k的bufferpool

5.创建数据库管理(DMS)的数据表空间

[db2inst2@xifenfei ~]$ db2 "create large tablespace tbs_data pagesize 32k managed by database
using (file '/home/db2inst2/dms/tbs_data01.dbf' 100M) extentsize 32 prefetchsize automatic
bufferpool bp32k no file system caching"
DB20000I  The SQL command completed successfully.

no file system caching关闭文件系统缓存,默认选项

6.创建系统管理(SMS)的临时表空间

[db2inst2@xifenfei ~]$ db2 "create temporary tablespace tbs_temp pagesize 32k
managed by system using ('/home/db2inst2/xifenfei/temp')  bufferpool bp32k"
DB20000I  The SQL command completed successfully.

7.创建系统管理(SMS)的用户临时表空间

[db2inst2@xifenfei ~]$ db2 "create user temporary tablespace tbs_user_temp pagesize 32k
managed by system using ('/home/db2inst2/xifenfei/user_temp')  bufferpool bp32k"
DB20000I  The SQL command completed successfully.

8.自动存储管理(Automatic Storage)的表空间

[db2inst2@xifenfei ~]$ db2 "create tablespace tbs_index pagesize 32k bufferpool bp32k"
DB20000I  The SQL command completed successfully.
[db2inst2@xifenfei ~]$ db2 "create tablespace tbs_data2 initialsize 10M increasesize 10M maxsize 10G"
DB20000I  The SQL command completed successfully.

数据表空间选择DMS,临时表空间选择SMS

9.查看表空间状态

[db2inst2@xifenfei ~]$ db2 list tablespaces show detail
           Tablespaces for Current Database
 Tablespace ID                        = 0
 Name                                 = SYSCATSPACE
 Type                                 = Database managed space
 Contents                             = All permanent data. Regular table space.
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 16384
 Useable pages                        = 16380
 Used pages                           = 10500
 Free pages                           = 5880
 High water mark (pages)              = 10500
 Page size (bytes)                    = 4096
 Extent size (pages)                  = 4
 Prefetch size (pages)                = 4
 Number of containers                 = 1
 Tablespace ID                        = 1
 Name                                 = TEMPSPACE1
 Type                                 = System managed space
 Contents                             = System Temporary data
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 1
 Useable pages                        = 1
 Used pages                           = 1
 Free pages                           = Not applicable
 High water mark (pages)              = Not applicable
 Page size (bytes)                    = 4096
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1
 Tablespace ID                        = 2
 Name                                 = USERSPACE1
 Type                                 = Database managed space
 Contents                             = All permanent data. Large table space.
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 8192
 Useable pages                        = 8160
 Used pages                           = 96
 Free pages                           = 8064
 High water mark (pages)              = 96
 Page size (bytes)                    = 4096
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1
 Tablespace ID                        = 3
 Name                                 = TBS_DATA
 Type                                 = Database managed space
 Contents                             = All permanent data. Large table space.
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 3200
 Useable pages                        = 3168
 Used pages                           = 96
 Free pages                           = 3072
 High water mark (pages)              = 96
 Page size (bytes)                    = 32768
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1
 Tablespace ID                        = 4
 Name                                 = TBS_TEMP
 Type                                 = System managed space
 Contents                             = System Temporary data
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 1
 Useable pages                        = 1
 Used pages                           = 1
 Free pages                           = Not applicable
 High water mark (pages)              = Not applicable
 Page size (bytes)                    = 32768
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1
 Tablespace ID                        = 5
 Name                                 = TBS_USER_TEMP
 Type                                 = System managed space
 Contents                             = User Temporary data
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 1
 Useable pages                        = 1
 Used pages                           = 1
 Free pages                           = Not applicable
 High water mark (pages)              = Not applicable
 Page size (bytes)                    = 32768
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1
 Tablespace ID                        = 6
 Name                                 = TBS_INDEX
 Type                                 = Database managed space
 Contents                             = All permanent data. Large table space.
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 1024
 Useable pages                        = 992
 Used pages                           = 96
 Free pages                           = 896
 High water mark (pages)              = 96
 Page size (bytes)                    = 32768
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1
 Tablespace ID                        = 7
 Name                                 = TBS_DATA2
 Type                                 = Database managed space
 Contents                             = All permanent data. Large table space.
 State                                = 0x0000
   Detailed explanation:
     Normal
 Total pages                          = 2560
 Useable pages                        = 2528
 Used pages                           = 96
 Free pages                           = 2432
 High water mark (pages)              = 96
 Page size (bytes)                    = 4096
 Extent size (pages)                  = 32
 Prefetch size (pages)                = 32
 Number of containers                 = 1

10.查看表空间和容器相关信息

[db2inst2@xifenfei ~]$ db2 list tablespace containers for 6 show detail
            Tablespace Containers for Tablespace 6
 Container ID                         = 0
 Name                                 = /home/db2inst2/dbauto/db2inst2/NODE0000/XIFENFEI/T0000006/C0000000.LRG
 Type                                 = File
 Total pages                          = 1024
 Useable pages                        = 992
 Accessible                           = Yes

11.显示表空间配置信息/使用信息/容器信息

[db2inst2@xifenfei ~]$ db2pd -d xifenfei -tablespaces
Database Partition 0 -- Database XIFENFEI -- Active -- Up 0 days 01:07:23
Tablespace Configuration:
Address    Id    Type Content PageSz ExtentSz Auto Prefetch BufID BufIDDisk FSC NumCntrs MaxStripe  LastConsecPg Name
0x9F43E060 0     DMS  Regular 4096   4        Yes  4        1     1         Off 1        0          3            SYSCATSPACE
0x9F43E6B0 1     SMS  SysTmp  4096   32       Yes  32       1     1         On  1        0          31           TEMPSPACE1
0x9F442EB0 2     DMS  Large   4096   32       Yes  32       1     1         Off 1        0          31           USERSPACE1
0x9F73B2E0 3     DMS  Large   32768  32       Yes  32       2     2         Off 1        0          31           TBS_DATA
0x9FAFE320 4     SMS  SysTmp  32768  32       Yes  32       2     2         On  1        0          31           TBS_TEMP
0x9FB029B0 5     SMS  UsrTmp  32768  32       Yes  32       2     2         On  1        0          31           TBS_USER_TEMP
0x9FB05420 6     DMS  Large   32768  32       Yes  32       2     2         Off 1        0          31           TBS_INDEX
0x9FB0BB20 7     DMS  Large   4096   32       Yes  32       1     1         Off 1        0          31           TBS_DATA2
Tablespace Statistics:
Address    Id    TotalPgs   UsablePgs  UsedPgs    PndFreePgs FreePgs    HWM        State      MinRecTime NQuiescers
0x9F43E060 0     16384      16380      10500      0          5880       10500      0x00000000 0          0
0x9F43E6B0 1     1          1          1          0          0          0          0x00000000 0          0
0x9F442EB0 2     8192       8160       96         0          8064       96         0x00000000 0          0
0x9F73B2E0 3     3200       3168       96         0          3072       96         0x00000000 0          0
0x9FAFE320 4     1          1          1          0          0          0          0x00000000 0          0
0x9FB029B0 5     1          1          1          0          0          0          0x00000000 0          0
0x9FB05420 6     1024       992        96         0          896        96         0x00000000 0          0
0x9FB0BB20 7     2560       2528       96         0          2432       96         0x00000000 0          0
Tablespace Autoresize Statistics:
Address    Id    AS  AR  InitSize    IncSize     IIP MaxSize     LastResize                 LRF
0x9F43E060 0     Yes Yes 33554432    -1          No  None        None                       No
0x9F43E6B0 1     Yes No  0           0           No  0           None                       No
0x9F442EB0 2     Yes Yes 33554432    -1          No  None        None                       No
0x9F73B2E0 3     No  No  0           0           No  0           None                       No
0x9FAFE320 4     No  No  0           0           No  0           None                       No
0x9FB029B0 5     No  No  0           0           No  0           None                       No
0x9FB05420 6     Yes Yes 33554432    -1          No  None        None                       No
0x9FB0BB20 7     Yes Yes 10485760    10485760    No  -2147483648 None                       No
Containers:
Address    TspId ContainNum Type    TotalPgs   UseablePgs StripeSet  Container
0x989BDE10 0     0          File    16384      16380      0          /home/db2inst2/dbauto/db2inst2/NODE0000/XIFENFEI/T0000000/C0000000.CAT
0x9F43ED00 1     0          Path    1          1          0          /home/db2inst2/dbauto/db2inst2/NODE0000/XIFENFEI/T0000001/C0000000.TMP
0x9F443500 2     0          File    8192       8160       0          /home/db2inst2/dbauto/db2inst2/NODE0000/XIFENFEI/T0000002/C0000000.LRG
0x9F73B930 3     0          File    3200       3168       0          /home/db2inst2/dms/tbs_data01.dbf
0x9F73DE90 4     0          Path    1          1          0          /home/db2inst2/xifenfei/temp
0x9FB05020 5     0          Path    1          1          0          /home/db2inst2/xifenfei/user_temp
0x9FB0B4A0 6     0          File    1024       992        0          /home/db2inst2/dbauto/db2inst2/NODE0000/XIFENFEI/T0000006/C0000000.LRG
0x9FB0C170 7     0          File    2560       2528       0          /home/db2inst2/dbauto/db2inst2/NODE0000/XIFENFEI/T0000007/C0000000.LRG

DB2实例管理

1.创建新实例

[root@xifenfei ~]# cd /opt/db2/V9.5/instance/
[root@xifenfei instance]# ./db2icrt -h
DBI1001I  Usage:
 db2icrt [-h|-?]
         [-d]
         [-a AuthType]
         [-p PortName]
         [-s InstType]
         -u FencedID InstName
[root@xifenfei instance]# useradd Fence2
[root@xifenfei instance]# passwd Fence2
Changing password for user Fence2.
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
[root@xifenfei instance]# useradd db2inst2
[root@xifenfei instance]# passwd db2inst2
Changing password for user db2inst2.
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
[root@xifenfei instance]# ./db2icrt -a server -p 55555 -s ese -u Fence2 db2inst2
DBI1070I  Program db2icrt completed successfully.
[root@xifenfei instance]# su - db2inst2
[db2inst2@xifenfei ~]$ db2 get instance
 The current database manager instance is:  db2inst2
[db2inst2@xifenfei ~]$ db2ilist
db2inst1
db2inst2
[db2inst2@xifenfei ~]$ db2greg -dump
S,DB2,9.5.0.0,/opt/db2/V9.5,,,0,0,,1332659153,0
S,DAS,9.5.0.0,/opt/db2/V9.5/das,lib/libdb2dasgcf.so,,,, ,,
I,DAS,9.5.0.0,dasusr1,/home/dasusr1/das,,1,,/opt/db2/V9.5/das,,
I,DB2,9.5.0.0,db2inst1,/home/db2inst1/sqllib,,1,0,/opt/db2/V9.5,,
I,DB2,9.5.0.0,db2inst2,/home/db2inst2/sqllib,,1,0,/opt/db2/V9.5,,

2.启动关闭实例

[db2inst2@xifenfei ~]$ db2stop
03/31/2012 11:57:48     0   0   SQL1064N  DB2STOP processing was successful.
SQL1064N  DB2STOP processing was successful.
[db2inst2@xifenfei ~]$ db2start
03/31/2012 11:57:52     0   0   SQL1063N  DB2START processing was successful.
SQL1063N  DB2START processing was successful.

3.删除实例

--先需要关闭实例
[root@xifenfei instance]# ./db2idrop db2inst2
DBI1070I  Program db2idrop completed successfully.