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How To Rename A Diskgroup On ASM 11gR2


 

       The present document provides a clear example about how to rename an ASM diskgroup on release 11gR2.

 

Solution

 

1)  First of all, the desired diskgroup needs to be dismounted (from each node if this is a RAC configuration):

​# asmcmd umount DATA ​

2) Verify that the desired diskgroup was dismounted:

​# 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 32756 31828 244 15792 0 N DATA_OCR/ ​
​MOUNTED EXTERN N 512 4096 1048576 16378 10134 0 10134 0 N LOBDATA/ ​

3) Then execute the rename statement:

​# renamedg phase=both dgname=DATA newdgname=DG_PROD_DATA verbose=true ​​​
​Parsing parameters.. ​
​Parameters in effect: ​
​Old DG name : DATA ​
​New DG name : DG_PROD_DATA ​
​Phases : ​
​Phase 1 ​
​Phase 2 ​
​Discovery str : (null) ​
​Clean : TRUE ​
​Raw only : TRUE ​
​renamedg operation: phase=both dgname=DATA newdgname=DG_PROD_DATA verbose=true ​
​Executing phase 1 ​
​Discovering the group ​
​Performing discovery with string: ​
​Identified disk ASM:/opt/oracle/extapi/64/asm/orcl/1/libasm.so:ORCL:DATA1 with disk number:0 and timestamp (32925601 -972709888) ​
​Identified disk ASM:/opt/oracle/extapi/64/asm/orcl/1/libasm.so:ORCL:DATA2 with disk number:1 and timestamp (32925601 -972709888) ​
​Identified disk ASM:/opt/oracle/extapi/64/asm/orcl/1/libasm.so:ORCL:DATA3 with disk number:2 and timestamp (32925601 -972709888) ​
​Checking for hearbeat... ​
​Re-discovering the group ​
​Performing discovery with string: ​
​Identified disk ASM:/opt/oracle/extapi/64/asm/orcl/1/libasm.so:ORCL:DATA1 with disk number:0 and timestamp (32925601 -972709888) ​
​Identified disk ASM:/opt/oracle/extapi/64/asm/orcl/1/libasm.so:ORCL:DATA2 with disk number:1 and timestamp (32925601 -972709888) ​
​Identified disk ASM:/opt/oracle/extapi/64/asm/orcl/1/libasm.so:ORCL:DATA3 with disk number:2 and timestamp (32925601 -972709888) ​
​Checking if the diskgroup is mounted ​
​Checking disk number:0 ​
​Checking disk number:1 ​
​Checking disk number:2 ​
​Checking if diskgroup is used by CSS ​
​Generating configuration file.. ​
​Completed phase 1 ​
​Executing phase 2 ​
​Looking for ORCL:DATA1 ​
​Modifying the header ​
​Looking for ORCL:DATA2 ​
​Modifying the header ​
​Looking for ORCL:DATA3 ​
​Modifying the header ​
​Completed phase 2 ​
​Terminating kgfd context 0x2af21517e0a0 ​

4) Finally, mount the renamed diskgroup and validate that it was mounted (on each node if this is a RAC configuration):

 

​# asmcmd mount DG_PROD_DATA ​

 

​# 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 32756 31828 244 15792 0 N DATA_OCR/ ​
​MOUNTED EXTERN N 512 4096 1048576 24567 14267 0 14267 0 N DG_PROD_DATA/ ​​​​MOUNTED EXTERN N 512 4096 1048576 16378 10134 0 10134 0 N LOBDATA/ ​



<<< Note: renamedg tool cannot rename the associated ASM disk(s) name(s). >>>

 

 

 

 

 


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