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How to rename ASM instances in RAC or clustered environment

2011-04-24 21:27 543 查看

之前做的一个实验：
RAC修改ASM实例名的步骤
http://blog.csdn.net/tianlesoftware/archive/2011/03/25/6275827.aspx

Thefollowingproceduresdorequiresomedowntime.Onenodeatatime,wewillshutdownalldatabaseinstancesthatstoretheirdatainASM.Theothernodeswillbeunaffected,sothesemaycontinuetoservicethebusiness.
AllthefollowingstepsareassumedtobeexecutedwhileloggedintotheserverastheOraclesoftwareowner(e.g.,oracle).

1)Fromoneofthenodes(anynode),updatetheOCR
Stopallthedbinstancesthatstoretheirdataintheasminstanceyouwillbedoingthemaintenance:

srvctlstopdb-d<dbname>
Stoptheasminstance:

srvctlstopasm-n<nodename>
RemoveasmdependenciesforthedbinstanceandunregisterasmfromtheOCR:

srvctlmodifyinst-d<dbname>-i<dbinstancename>-r
srvctlremoveasm-n<nodename>

2)Edit/etc/oratab(oneachnode):

Locationoforatabonsomeplatforms:*ForAIX,HP-UX,orLinux:/etc/oratab
*ForSolaris:/var/opt/oracle/oratab

ChangedtheORACLE_SIDfortheASMinstance,tothereflectthenewnamefortheASMinstance.

Example:Needtochange+ASM1to+ASMADC1:

Changefrom:+ASM1:/c1/app/oracle/product/11.1.0.6/asm_1:N
Changeto:+ASMADC1:/c1/app/oracle/product/11.1.0.6/asm_1:N

3)Renameinitfilesandorapwfiles(oneachnode):

Examplefornode1:

mv$ORACLE_HOME/dbs/init+ASM1.ora$ORACLE_HOME/dbs/init+ASMADC1.ora

mv$ORACLE_HOME/dbs/orapw+ASM1$ORACLE_HOME/dbs/orapw+ASMADC1

NOTE:WhereORACLE_HOME,isthehomeforasm

4)ChangecontentsofASM'sinstanceparameters(oneachnode):

Ifusingapfile:

Replaceanyreferencestotheoldasminstancenameswiththenewasmnames.

Example:

+ASM1.instance_number=1--changeto-->+ASMADC1.instance_number=1

Ifusinganspfile:

ConnecttotheASMinstance,anduseSQLcommands.

Exampleonnode1toremovethereferencesto+ASM1:

SQL>altersystemresetinstance_numbersid='+ASM1'scope=spfile;

Exampleonnode1tosetthenewvalue:

SQL>altersystemsetinstance_number=1sid='+ASMADC1'scope=spfile;

5)CleanupsomedirectoriesandfilesusedbythepreviousASMinstances:

Youmaychoosetobackthesefirstforhistoricalpurposesonly.

Ifusing10g

,oneachnoderemoveanydirectoriesandfilesfortheolderASMinstanceunder:

$ORACLE_BASE/admin

Ifusing11g

,oneachnoderemoveanydirectoriesandfilesfortheolderASMinstanceunder:

$ORACLE_BASE/diag/

6)UpdatetheOCR(fromonenodeonly.anynode):

ExampletoregisterthenewASMinstancethatwillruninnode1:

srvctladdasm-nadc1-i+ASMADC1-o/c1/app/oracle/product/11.1.0.6/asm_1

Whereadc1isnode_name,+ASMADC1isthenewASMinstancename,andthevaluegivento-oistheORACLE_HOMEfortheasminstance.
RegistereachdatabaseinstancethatstorestheirdatainASM,withthenewASMinstancename.
Example:
srvctlmodifyinst-d<dbname>-i<instancename>-s+ASMADC<n>

7)StartuptheASMinstance(fromonenodeonly,anynode):

srvctlstartasm-n<nodename>

8)StartupthedatabaseinstancesthatstoretheirdataintheASMinstancethatyoujustcompletedthemaintenance(fromonenodeonly-anynode):

srvctlstartdb-d<dbname>

OR

srvctlstartinst-db<dbname>-i<instancename>

9)Ifyouhaveanyscriptsthathavehard-codedASMinstancenames,donotforgettoalsoupdatethose.

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