how to restore OCR after complete loss of single OCR diskgroup

crs daemon was not able to start as my ocr diskgroup was not mounted. I logged in to asm instance.

But i was able to mount my other diskgroups

also checked using asmcmd lsdg –discovery command

came to know after checking alertlog CRS diskgroup had corrupted block.


referring doc id 1062983.1 i was able to restore ocr to a new disk with same diskgroup name

please feel free to ask me at


Upgrade non asm oracle database to using dbua

Step by step guide to upgrade non asm database to using dbua Download

ORA-28000 account locked error while creating database using dbca on Grid Infrastructure with ASM on Standalone Server

My environment details
OS : OEL 6.5 64bit
Database version :
grid infrastructure with asm on Standalone Server

I had two issues while creating database using dbca

1) I was not able to see the diskgroup at step 6 after selecting Automatic storage management, i selected use oracle-managed files
and at database area after clicking the browse button no diskgroup was shown in that area it was blank

Cause of problem :
oracle user was not part of asmdba group

Solution :
I added oracle user to asmdba group as i missed to add oracle user to asmdba group

usermod -G asmdba oracle

after that i could see the diskgroup after selecting browse button

2) ORA-28000 account locked error after it completes 43% while creating database

Cause of problem :
oracle user was not part of dba group

as you can see from the output

[oracle@oralab1 cfgtoollogs]$ id oracle

uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54324(asmdba)

[oracle@oralab1 cfgtoollogs]$ id grid

uid=54322(grid) gid=54321(oinstall) groups=54321(oinstall),54322(dba),54323(asmadmin),54324(asmdba),54325(asmoper)

Solution :
usermod -a -G dba oracle

after adding oracle user to dba group database creation was successful