Oracle Study之--Oracle RAC重建控制檔案

Oracle Study之--Oracle RAC重建控制檔案

系統內容：
作業系統： AIX5.3

Cluster：  Oracle 10gR2 CRS
Oracle：  Oracle 10gR2

在RAC環境下重建控制檔案和在單一實例上類似，只是有些步驟需要注意：
[oracle@aix211 ~]$cat mkln.sh 
ln -s /dev/rsystem          /u01/app/oracle/oradata/prod/system01.dbf
ln -s /dev/rsysaux          /u01/app/oracle/oradata/prod/sysaux01.dbf
ln -s /dev/rusers            /u01/app/oracle/oradata/prod/users01.dbf
ln -s /dev/rundotbs1        /u01/app/oracle/oradata/prod/undotbs01.dbf 
ln -s /dev/rundotbs2        /u01/app/oracle/oradata/prod/undotbs02.dbf
ln -s /dev/rtemp            /u01/app/oracle/oradata/prod/temp01.dbf
ln -s /dev/rcontrol1_1        /u01/app/oracle/oradata/prod/control01.ctl
ln -s /dev/rcontrol2_2        /u01/app/oracle/oradata/prod/control02.ctl
ln -s /dev/rcontrol3_3        /u01/app/oracle/oradata/prod/control03.ctl
ln -s /dev/rredo1_1          /u01/app/oracle/oradata/prod/log11.log
ln -s /dev/rredo1_2          /u01/app/oracle/oradata/prod/log12.log
ln -s /dev/rredo2_1          /u01/app/oracle/oradata/prod/log21.log
ln -s /dev/rredo2_2          /u01/app/oracle/oradata/prod/log22.log
ln -s /dev/rindex            /u01/app/oracle/oradata/prod/index01.dbf
ln -s /dev/rspfile          /u01/app/oracle/oradata/prod/spfile01
ln -s /dev/rexample          /u01/app/oracle/oradata/prod/example01.dbf

Database儲存在在RAW上。

1、首先在一個節點備份controlfile

[oracle@aix201 ~]$sqlplus '/as sysdba'
SQL*Plus: Release 10.2.0.1.0 - Production on Mon Mar 23 16:16:07 2015
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP and Data Mining options
 
SQL> select status from v$instance;
STATUS
------------
OPEN
SQL> alter database backup controlfile to trace;
Database altered.

2、查看控制檔案的trace備份（udump）
CREATE CONTROLFILE REUSE DATABASE "PROD" NORESETLOGS  NOARCHIVELOG
    MAXLOGFILES 192
    MAXLOGMEMBERS 3
    MAXDATAFILES 1024
    MAXINSTANCES 32
    MAXLOGHISTORY 292
LOGFILE
  GROUP 1 '/u01/app/oracle/oradata/prod/log11.log'  SIZE 50M,
  GROUP 2 '/u01/app/oracle/oradata/prod/log12.log'  SIZE 50M,
  GROUP 3 '/u01/app/oracle/oradata/prod/log21.log'  SIZE 50M,
  GROUP 4 '/u01/app/oracle/oradata/prod/log22.log'  SIZE 50M
-- STANDBY LOGFILE
DATAFILE
  '/u01/app/oracle/oradata/prod/system01.dbf',
  '/u01/app/oracle/oradata/prod/undotbs01.dbf',
  '/u01/app/oracle/oradata/prod/sysaux01.dbf',
  '/u01/app/oracle/oradata/prod/users01.dbf',
  '/u01/app/oracle/oradata/prod/example01.dbf',
  '/u01/app/oracle/oradata/prod/undotbs02.dbf'
CHARACTER SET ZHS16GBK
;

3、關閉database，啟動其中一個instance到弄mount
SQL> startup nomount;
ORACLE instance started.
Total System Global Area  612368384 bytes
Fixed Size                  2022832 bytes
Variable Size            184549968 bytes
Database Buffers          423624704 bytes
Redo Buffers                2170880 bytes
 
SQL> @/home/oracle/cr_ctr.sql
CREATE CONTROLFILE REUSE DATABASE "PROD" NORESETLOGS  NOARCHIVELOG
*
ERROR at line 1:
ORA-01503: CREATE CONTROLFILE failed
ORA-12720: operation requires database is in EXCLUSIVE mode
SQL> show parameter cluster
NAME                                TYPE        VALUE
------------------------------------ ----------- ------------------------------
cluster_database                    boolean    TRUE
cluster_database_instances          integer    2
cluster_interconnects                string
 
---建立失敗，原因是在RAC下控制檔案時處於共用（share）模式，需啟動到獨立（exclusive）模式，才能重建；修改cluster_database 為false，然後重建

重建立立控制檔案：
SQL> alter system set cluster_database =false scope=spfile;
System altered.
SQL> startup nomount
ORACLE instance started.
Total System Global Area  612368384 bytes
Fixed Size                  2022832 bytes
Variable Size            184549968 bytes
Database Buffers          423624704 bytes
Redo Buffers                2170880 bytes
 
SQL> show parameter cluster
NAME                                TYPE        VALUE
------------------------------------ ----------- ------------------------------
cluster_database                    boolean    FALSE
cluster_database_instances          integer    1
cluster_interconnects                string
 
SQL> @/home/oracle/cr_ctr.sql
Control file created.
 
警示日誌：
alter.log:
Mon Mar 23 16:41:00 2015
CREATE CONTROLFILE REUSE DATABASE "PROD" NORESETLOGS  NOARCHIVELOG
    MAXLOGFILES 192
    MAXLOGMEMBERS 3
    MAXDATAFILES 1024
    MAXINSTANCES 32
    MAXLOGHISTORY 292
LOGFILE
  GROUP 1 '/u01/app/oracle/oradata/prod/log11.log'  SIZE 50M,
  GROUP 2 '/u01/app/oracle/oradata/prod/log12.log'  SIZE 50M,
  GROUP 3 '/u01/app/oracle/oradata/prod/log21.log'  SIZE 50M,
  GROUP 4 '/u01/app/oracle/oradata/prod/log22.log'  SIZE 50M
-- STANDBY LOGFILE
DATAFILE
  '/u01/app/oracle/oradata/prod/system01.dbf',
  '/u01/app/oracle/oradata/prod/undotbs01.dbf',
  '/u01/app/oracle/oradata/prod/sysaux01.dbf',
  '/u01/app/oracle/oradata/prod/users01.dbf',
  '/u01/app/oracle/oradata/prod/example01.dbf',
  '/u01/app/oracle/oradata/prod/undotbs02.dbf'
CHARACTER SET ZHS16GBK
Mon Mar 23 16:41:00 2015
WARNING: Default Temporary Tablespace not specified in CREATE DATABASE command
Default Temporary Tablespace will be necessary for a locally managed database in future release
WARNING: You are creating/reusing datafile /u01/app/oracle/oradata/prod/control01.ctl.
WARNING: Oracle recommends creating new datafiles on devices with zero offset. The command "/usr/sbin/mklv -y LVname -T O -w n -s n -r n VGname NumPPs" can be used. Please contact Oracle customer support for more details.
WARNING: You are creating/reusing datafile /u01/app/oracle/oradata/prod/control01.ctl.
WARNING: Oracle recommends creating new datafiles on devices with zero offset. The command "/usr/sbin/mklv -y LVname -T O -w n -s n -r n VGname NumPPs" can be used. Please contact Oracle customer support for more details.
WARNING: You are creating/reusing datafile /u01/app/oracle/oradata/prod/control02.ctl.
WARNING: Oracle recommends creating new datafiles on devices with zero offset. The command "/usr/sbin/mklv -y LVname -T O -w n -s n -r n VGname NumPPs" can be used. Please contact Oracle customer support for more details.
WARNING: You are creating/reusing datafile /u01/app/oracle/oradata/prod/control02.ctl.
WARNING: Oracle recommends creating new datafiles on devices with zero offset. The command "/usr/sbin/mklv -y LVname -T O -w n -s n -r n VGname NumPPs" can be used. Please contact Oracle customer support for more details.
Setting recovery target incarnation to 1
Mon Mar 23 16:41:05 2015
Successful mount of redo thread 1, with mount id 286981148
Mon Mar 23 16:41:05 2015
Completed: CREATE CONTROLFILE REUSE DATABASE "PROD" NORESETLOGS  NOARCHIVELOG
    MAXLOGFILES 192
    MAXLOGMEMBERS 3
    MAXDATAFILES 1024
    MAXINSTANCES 32
    MAXLOGHISTORY 292
LOGFILE
  GROUP 1 '/u01/app/oracle/oradata/prod/log11.log'  SIZE 50M,
  GROUP 2 '/u01/app/oracle/oradata/prod/log12.log'  SIZE 50M,
  GROUP 3 '/u01/app/oracle/oradata/prod/log21.log'  SIZE 50M,
  GROUP 4 '/u01/app/oracle/oradata/prod/log22.log'  SIZE 50M
-- STANDBY LOGFILE
DATAFILE
  '/u01/app/oracle/oradata/prod/system01.dbf',
  '/u01/app/oracle/oradata/prod/undotbs01.dbf',
  '/u01/app/oracle/oradata/prod/sysaux01.dbf',
  '/u01/app/oracle/oradata/prod/users01.dbf',
  '/u01/app/oracle/oradata/prod/example01.dbf',
  '/u01/app/oracle/oradata/prod/undotbs02.dbf'
CHARACTER SET ZHS16GBK

4、重建成功，啟動到open
SQL> select status from v$instance;
STATUS
------------
MOUNTED
 
SQL> alter database open;
Database altered.
 
添加暫存資料表空間資料檔案：
SQL> select name from v$tempfile;
no rows selected
 
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
UNDOTBS1
SYSAUX
TEMP
USERS
UNDOTBS2
EXAMPLE
7 rows selected.
 
SQL> alter tablespace temp add 
  2  tempfile '/u01/app/oracle/oradata/prod/temp01.dbf' size 100m reuse;
Tablespace altered.
SQL>  select name from v$tempfile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/prod/temp01.dbf

5、修改cluster_database參數，啟動所有instance
SQL> alter system set cluster_database =true scope=spfile;
System altered.

啟動所有Instance，如果所有instance啟動成功，則controlfile重建成功。