利用OracleRAC11gR2新特性renamedg来更改diskgroupname

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AIX7.1 + 双节点Oracle Rac 11.2.0.3，由于此套Rac并非自己部门安装，是开发部安装，现交由运维部分来管理，客户需要要将asm di

交代环境：
AIX7.1 + 双节点Oracle Rac 11.2.0.3

由于此套Rac并非自己部门安装，是开发部安装，现交由运维部分来管理，客户需要要将asm diskgroup name 安装部门规范来命令。遂需要将oasmdgdata1更改为datadg。
幸好Oracle的版本是11gR2，在11gR2中，Oracle有一项新特性，可以直接使用renamedg命令更改diskgroup的名称。

下面是具体的操作步骤。

grid@sundb01:/home/grid>asmcmd
ASMCMD> lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED NORMAL N 512 4096 1048576 358400 358192 0 179096 0 N OASMDGDATA01/
MOUNTED NORMAL N 512 4096 1048576 15360 14434 5120 4657 0 Y OCRDG/
ASMCMD> umount oasmdgdata01
ASMCMD> lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED NORMAL N 512 4096 1048576 15360 14434 5120 4657 0 Y OCRDG/

grid@sundb01:/home/grid>renamedg -help
NOTE: No asm libraries found in the system

Parsing parameters..
phase Phase to execute,
(phase=ONE|TWO|BOTH), default BOTH

dgname Diskgroup to be renamed

newdgname New name for the diskgroup

config intermediate config file

check just check-do not perform actual operation,
(check=TRUE/FALSE), default FALSE

confirm confirm before committing changes to disks,
(confirm=TRUE/FALSE), default FALSE

clean ignore errors,
(clean=TRUE/FALSE), default TRUE

asm_diskstring ASM Diskstring (asm_diskstring='discoverystring',
'discoverystring1' ...)

verbose verbose execution,
(verbose=TRUE|FALSE), default FALSE

keep_voting_files Voting file attribute,
(keep_voting_files=TRUE|FALSE), default FALSE

利用renamedg来更改diskgroup的名称：
grid@sundb01:/home/grid>renamedg phase=both dgname=oasmdgdata01 newdgname=datadg verbose=true
NOTE: No asm libraries found in the system

Parsing parameters..

Parameters in effect:

Old DG name : OASMDGDATA01
New DG name : DATADG
Phases :
Phase 1
Phase 2
Discovery str :
Clean : TRUE
Raw only : TRUE
renamedg operation: phase=both dgname=oasmdgdata01 newdgname=datadg verbose=true
Executing phase 1
Discovering the group
Performing discovery with string:
Identified disk UFS:/dev/rhdisk2 with disk number:1 and timestamp (33002374 -296274944)
Identified disk UFS:/dev/rhdisk1 with disk number:0 and timestamp (33002374 -296274944)
Checking for hearbeat...
Re-discovering the group
Performing discovery with string:
Identified disk UFS:/dev/rhdisk2 with disk number:1 and timestamp (33002374 -296274944)
Identified disk UFS:/dev/rhdisk1 with disk number:0 and timestamp (33002374 -296274944)
Checking if the diskgroup is mounted or used by CSS
Checking disk number:1
Checking disk number:0
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for /dev/rhdisk2
Modifying the header
Looking for /dev/rhdisk1
Modifying the header
Completed phase 2
Terminating kgfd context 110285ba0
grid@sundb01:/home/grid>
grid@sundb01:/home/grid>sqlplus / as sysasm

SQL*Plus: Release 11.2.0.3.0 Production on Fri Oct 10 12:33:31 2014

Copyright (c) 1982, 2011, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options

SQL> select name,state from v$asm_diskgroup;

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