修改RAC环境中的ASM DG名称

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# 1. 生成数据文件重命名脚本

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--1.1 日志文件路径替换

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sql > select 'ALTER DATABASE RENAME FILE '''||MEMBER||''' TO '''||REPLACE(MEMBER,'+ARCH_DG','+helloWorldARCH')||'''; ' FROM v$logfile where member like '%ARCH_DG%';

ALTER DATABASE RENAME FILE '+ARCH_DG/helloWorlddb/onlinelog/group_1.257.946749259' TO '+helloWorldARCH/helloWorlddb/onlinelog/group_1.257.946749259';

......

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--1.2 日志文件路径替换

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SQL > select 'ALTER DATABASE RENAME FILE '''||MEMBER||''' TO '''||REPLACE(MEMBER,'+DATA01_DG','+helloWorldDATA1')||'''; ' FROM v$logfile where member like '%DATA01_DG%';

ALTER DATABASE RENAME FILE '+DATA01_DG/helloWorlddb/onlinelog/group_1.257.946749257' TO '+helloWorldDATA1/helloWorlddb/onlinelog/group_1.257.946749257';

......

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--1.3 数据文件路径替换

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SQL > select 'ALTER DATABASE RENAME FILE '''||NAME||''' TO '''||REPLACE(NAME,'+DATA01_DG','+helloWorldDATA1')||'''; ' FROM v$datafile;

ALTER DATABASE RENAME FILE '+DATA01_DG/helloWorlddb/datafile/system.267.946748147' TO '+helloWorldDATA1/helloWorlddb/datafile/system.267.946748147';

......

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--1.4 临时文件路径替换

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SQL > select 'ALTER DATABASE RENAME FILE '''||NAME||''' TO '''||REPLACE(NAME,'+DATA01_DG','+helloWorldDATA1')||'''; ' FROM v$tempfile;

ALTER DATABASE RENAME FILE '+DATA01_DG/helloWorlddb/tempfile/temp.264.946748289' TO '+helloWorldDATA1/helloWorlddb/tempfile/temp.264.946748289';

......

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--1.5 备份参数文件

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SQL> create pfile='/home/oracle/helloWorld.pfile' from spfile;

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# 2. 停数据库

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oracle@helloWorlddb1:[/home/oracle]srvctl config database -d helloWorlddb

oracle@helloWorlddb1:[/home/oracle]srvctl stop database -d helloWorlddb

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# 3. 重命名DG (grid用户操作)

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--3.1 查看DG信息

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grid@helloWorlddb1:[/home/grid]kfod a='/dev/rdisk/*' disks=all ds=true o=all 

grid@helloWorlddb1:[/home/grid]crsctl stat res -t

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--3.2 删除旧DG信息

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grid@helloWorlddb1:[/home/grid]srvctl stop diskgroup -g ARCH_DG -n helloWorlddb1,helloWorlddb2  

grid@helloWorlddb1:[/home/grid]srvctl stop diskgroup -g DATA01_DG -n helloWorlddb1,helloWorlddb2  

grid@helloWorlddb1:[/home/grid]srvctl remove diskgroup -g ARCH_DG -f

grid@helloWorlddb1:[/home/grid]srvctl remove diskgroup -g DATA01_DG -f

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--3.3 重命名DG

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grid@helloWorlddb1:[/home/grid]renamedg dgname=DATA01_DG newdgname=helloWorldDATA1 asm_diskstring='/dev/rdisk/disk*' verbose=true

grid@helloWorlddb1:[/home/grid]renamedg dgname=ARCH_DG newdgname=helloWorldARCH asm_diskstring='/dev/rdisk/disk*' verbose=true

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--3.4 查看新DG信息

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grid@helloWorlddb1:[/home/grid]kfod a='/dev/rdisk/*' disks=all ds=true o=all 

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--3.5 挂载新DG

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grid@helloWorlddb1:[/home/grid]sqlplus / as sysasm

SQL> alter diskgroup helloWorldDATA1 mount;

SQL> alter diskgroup helloWorldARCH mount;

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--3.6 检查ASM实例中参数信息

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SQL> show parameter asm_diskgroups;

--如果有需要，手工调整参数所对应的磁盘组信息

SQL> alter system set asm_diskgroups=helloWorldDATA1,helloWorldARCH sid='+ASM1';

SQL> alter system set asm_diskgroups=helloWorldDATA1,helloWorldARCH sid='+ASM2';

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--3.7 检查crs资源信息

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grid@helloWorlddb1:[/home/grid]crsctl stat res -t

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# 4. 修改数据库相关DG路径 (oracle用户)

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--4.1 修改数据库参数文件路径 (两个节点)

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oracle@helloWorlddb1:[/home/oracle]cd $ORACLE_HOME/dbs

oracle@helloWorlddb1:[/oracle/app/oracle/11.2.0.4/db_1/dbs]vi inithelloWorlddb1.ora

oracle@helloWorlddb2:[/oracle/app/oracle/11.2.0.4/db_1/dbs]vi inithelloWorlddb2.ora

:%s/DATA01_DG/helloWorldDATA1/g

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--4.2 修改crs中记录的参数文件与DG信息

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oracle@helloWorlddb1:[/home/oracle]srvctl modify database -d helloWorlddb -p +helloWorldDATA1/helloWorlddb/spfilehelloWorlddb.ora -a helloWorldDATA1,helloWorldARCH

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--4.3 启动数据库到nomount状态

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oracle@helloWorlddb1:[/home/oracle]sqlplus / as sysdba

SQL> startup nomount;

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--4.4 修改与DG名称相关的数据库参数

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oracle@helloWorlddb1:[/home/oracle]grep DATA01_DG helloWorld.pfile  

oracle@helloWorlddb1:[/home/oracle]grep ARCH_DG helloWorld.pfile

oracle@helloWorlddb1:[/home/oracle]sqlplus / as sysdba

alter system set control_files='+helloWorldDATA1/helloWorlddb/controlfile/current.265.946748283', '+helloWorldARCH/helloWorlddb/controlfile/current.256.946748283' scope=spfile;

alter system set db_create_file_dest='+helloWorldDATA1' scope=spfile;

alter system set db_create_online_log_dest_1='+helloWorldDATA1' scope=spfile;

alter system set db_create_online_log_dest_2='+helloWorldARCH' scope=spfile;

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--4.5 重新启动并挂载数据库

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SQL> shutdown immediate;

SQL> startup mount;

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--4.6 执行步骤1中生成的数据库重命名脚本

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--4.7 打开数据库

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SQL> alter database open;

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--4.8 重启集群进行验证

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