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rrac+dataguard

By Robin Cunningham,2014-09-08 02:29
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rrac+dataguard

    为一个RAC搭建standby和单节点搭建方法基本一致,我们可以把RAC看成是一个单节点的数据库,只需要保证所有节点的日志能传送到备库即可。

一、在备库服务器安装ORACLE软件

    只安装软件,不要创建数据库。ORACLE软件版本和主库保持一致。

二、修改主库参数

    节点1执行(

    SQL> show parameter spfile

NAME TYPE VALUE

    ------------------------------------ -----------

    ------------------------------ spfile string /dev/raw/raw14

节点2执行(

    SQL> show parameter spfile

NAME TYPE VALUE

    ------------------------------------ -----------

    ------------------------------ spfile string /dev/raw/raw14

    可见,在本例中,RAC各节点共用一个spfile,所以,我们修改参数时,可以只需在一个节点下修改就可以了。

--强制数据库LOGGING

    SQL> ALTER DATABASE FORCE LOGGING;

Database altered.

    --修改DATAGUARD相关参数

    SQL> ALTER SYSTEM SET DB_UNIQUE_NAME=primary scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_CONFIG='DG_CONFIG=(primary,standby)' scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_1='LOCATION=/soft/archivelog/ VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=primary' scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_2='SERVICE=standby LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=standby' scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_1=ENABLE scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2=ENABLE scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_FORMAT='%t_%s_%r.arc' scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET LOG_ARCHIVE_MAX_PROCESSES=4 scope=spfile;

System altered.

    SQL> ALTER SYSTEM SET COMPATIBLE = '10.2.0.3' scope=spfile;

System altered.

--以下几个参数是为了SWITCH OVER用的,是可选参数。

    --但是为了以后可能发生的SWITCH OVER更方便,应该养成设置这些参数的习惯

    SQL> ALTER SYSTEM SET FAL_CLIENT = PRIMARY SCOPE=SPFILE;

System altered.

    SQL> ALTER SYSTEM SET FAL_SERVER = STANDBY SCOPE=SPFILE;

System altered.

    SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT =AUTO SCOPE=SPFILE;

System altered.

SQL> ALTER SYSTEM SET

    DB_FILE_NAME_CONVERT='/soft/oradata/rac/','/dev/raw/' SCOPE=SPFILE;

System altered.

SQL> ALTER SYSTEM SET

    LOG_FILE_NAME_CONVERT='/soft/oradata/rac/','/dev/raw/' SCOPE=SPFILE;

System altered.

    --在本文测试环境下,由于主库和备库路径不一致,所以要设置路径转换参数。

三、修改主库为归档模式

    1--关闭所有实例

    --注意(修改以上参数后,必须把所有实例都关闭。否则在启动实例的时候可能会导致错误(

    --ORA-00600: internal error code, arguments: [kccsbck_first], [2],

    [2241198041],

    [], [], [], [], []

SQL> shutdown immediate

    Database closed.

    Database dismounted.

    ORACLE instance shut down.

    2、修改为归档模式

    --关闭所有节点

    SQL> shutdown immediate

    Database closed.

Database dismounted.

    ORACLE instance shut down.

--在其中一个节点启用归档

    SQL> startup mount

    ORACLE instance started.

Total System Global Area 159383552 bytes

    Fixed Size 1260672 bytes

    Variable Size 79692672 bytes Database Buffers 75497472 bytes Redo Buffers 2932736 bytes Database mounted.

    SQL> alter database archivelog;

Database altered.

    SQL> alter database open; Database altered.

    10GR2以前,在RAC环境下修改归档必须先把设置参数cluster_database=false把数据库设置为归档后再把该参数设置为true,但这个步骤在10GR2可以省略。 四、备份数据库

    1、备份数据库

    备份操作在节点1(rac1)上执行。

    由于归档在不同的节点下,故要连接所有节点进行备份(

[oracle@rac1 ~]$ $ORACLE_HOME/bin/rman target /

    Recovery Manager: Release 10.2.0.3.0 - Production on Wed Apr 30 14:48:23 2008

    Copyright (c) 1982, 2005, Oracle. All rights reserved.

    connected to target database: RAC (DBID=2232067446)

RMAN> run

    2> {

    3> allocate channel c1 device type disk format '/soft/backup/%U' connect sys/test@rac1;

    4> allocate channel c2 device type disk format '/soft/backup/%U' connect sys/test@rac2;

    5> backup database plus archivelog delete all input; 6> }

    using target database control file instead of recovery catalog allocated channel: c1

    channel c1: sid=134 instance=rac1 devtype=DISK

allocated channel: c2

    channel c2: sid=141 instance=rac2 devtype=DISK

    Starting backup at 30-APR-08

    current log archived

    channel c1: starting archive log backupset

    channel c1: specifying archive log(s) in backup set

    input archive log thread=1 sequence=80 recid=1 stamp=653247673 input archive log thread=1 sequence=81 recid=4 stamp=653268228 input archive log thread=1 sequence=82 recid=5 stamp=653353066 channel c1: starting piece 1 at 30-APR-08

    channel c2: starting archive log backupset

    channel c2: specifying archive log(s) in backup set input archive log thread=1 sequence=85 recid=13 stamp=653409646 input archive log thread=2 sequence=42 recid=2 stamp=653248818 input archive log thread=2 sequence=43 recid=3 stamp=653250118 input archive log thread=2 sequence=46 recid=10 stamp=653353763 input archive log thread=2 sequence=47 recid=11 stamp=653354798 input archive log thread=2 sequence=48 recid=12 stamp=653409644 input archive log thread=2 sequence=49 recid=16 stamp=653410122 channel c2: starting piece 1 at 30-APR-08

    channel c2: finished piece 1 at 30-APR-08

    piece handle=/soft/backup/02jf4fql_1_1 tag=TAG20080430T144854 comment=NONE

    channel c2: backup set complete, elapsed time: 00:00:05 channel c2: deleting archive log(s)

    archive log filename=/soft/archivelog/1_85_644085430.arc recid=13 stamp=653409646

    archive log filename=/soft/archivelog/2_42_644085430.arc recid=2 stamp=653248818

    archive log filename=/soft/archivelog/2_43_644085430.arc recid=3 stamp=653250118

    archive log filename=/soft/archivelog/2_46_644085430.arc recid=10 stamp=653353763

    archive log filename=/soft/archivelog/2_47_644085430.arc recid=11 stamp=653354798

    archive log filename=/soft/archivelog/2_48_644085430.arc recid=12 stamp=653409644

    archive log filename=/soft/archivelog/2_49_644085430.arc recid=16 stamp=653410122

    channel c1: finished piece 1 at 30-APR-08

    piece handle=/soft/backup/01jf4fqq_1_1 tag=TAG20080430T144854 comment=NONE

    channel c1: backup set complete, elapsed time: 00:00:14 channel c1: deleting archive log(s)

    archive log filename=/soft/archivelog/1_80_644085430.arc recid=1 stamp=653247673

    archive log filename=/soft/archivelog/1_81_644085430.arc recid=4 stamp=653268228

    archive log filename=/soft/archivelog/1_82_644085430.arc recid=5 stamp=653353066

    channel c1: starting archive log backupset

    channel c1: specifying archive log(s) in backup set input archive log thread=1 sequence=83 recid=6 stamp=653353068 input archive log thread=1 sequence=84 recid=9 stamp=653353575 input archive log thread=1 sequence=86 recid=14 stamp=653409966 input archive log thread=1 sequence=87 recid=15 stamp=653410123 input archive log thread=2 sequence=44 recid=7 stamp=653353071 input archive log thread=2 sequence=45 recid=8 stamp=653353072

channel c1: starting piece 1 at 30-APR-08

    channel c1: finished piece 1 at 30-APR-08

    piece handle=/soft/backup/03jf4fr9_1_1 tag=TAG20080430T144854 comment=NONE

    channel c1: backup set complete, elapsed time: 00:00:02 channel c1: deleting archive log(s)

    archive log filename=/soft/archivelog/1_83_644085430.arc recid=6 stamp=653353068

    archive log filename=/soft/archivelog/1_84_644085430.arc recid=9 stamp=653353575

    archive log filename=/soft/archivelog/1_86_644085430.arc recid=14 stamp=653409966

    archive log filename=/soft/archivelog/1_87_644085430.arc recid=15 stamp=653410123

    archive log filename=/soft/archivelog/2_44_644085430.arc recid=7 stamp=653353071

    archive log filename=/soft/archivelog/2_45_644085430.arc recid=8 stamp=653353072

    Finished backup at 30-APR-08

Starting backup at 30-APR-08

    channel c1: starting full datafile backupset

    channel c1: specifying datafile(s) in backupset

    input datafile fno=00001 name=/dev/raw/raw1

    input datafile fno=00005 name=/dev/raw/raw7

    input datafile fno=00003 name=/dev/raw/raw2

    channel c1: starting piece 1 at 30-APR-08

    channel c2: starting full datafile backupset channel c2: specifying datafile(s) in backupset input datafile fno=00002 name=/dev/raw/raw3

    input datafile fno=00004 name=/dev/raw/raw5

    channel c2: starting piece 1 at 30-APR-08

    channel c2: finished piece 1 at 30-APR-08

    piece handle=/soft/backup/05jf4frg_1_1 tag=TAG20080430T144919 comment=NONE

    channel c2: backup set complete, elapsed time: 00:00:43 channel c2: starting full datafile backupset channel c2: specifying datafile(s) in backupset including current control file in backupset

    channel c2: starting piece 1 at 30-APR-08

    channel c2: finished piece 1 at 30-APR-08

    piece handle=/soft/backup/06jf4ft0_1_1 tag=TAG20080430T144919 comment=NONE

    channel c2: backup set complete, elapsed time: 00:00:22 channel c2: starting full datafile backupset channel c2: specifying datafile(s) in backupset including current SPFILE in backupset

    channel c2: starting piece 1 at 30-APR-08

    channel c2: finished piece 1 at 30-APR-08

    piece handle=/soft/backup/07jf4ftm_1_1 tag=TAG20080430T144919 comment=NONE

    channel c2: backup set complete, elapsed time: 00:00:06

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