DBCA Does Not Display ASM Disk Groups In 12cR2

I was installing Oracle 12c R2 with ASM but somehow the DBCA did not list ASM diskgroups. After struggling for hours, I could find a solution, not sure if it is approved by Oracle but it works !!

 

Problem

 

I’ve installed Grid infrastructure with user grid, and I was trying to install oracle database 12cr2 with oracle user but during this installation I wasn’t able to see any of my ASM disk in the select disk group.

 

Solution

 

log in as root user

 

/dev/oracleasm/

ls -lrt to check the permission on oracleasm directory

chown -R grid:oinstall oracleasm

 

cd /dev/oracleasm/disks

 

Login as grid user

 

cd $ORACLE_HOME

cd bin

ls -ld to check the permision on oracle directory

chmod 6571 oracle

ls -ld oracle

 

Login as oracle user

 

cd $ORACLE_HOME

cd bin

ls -ld oracle to check the permision

 

However, oracle directory permision in both grid user and oracle user must have the same permission. Therefore, issue the following command;

 

chmod 6571 oracle

 

Go back to select disk group and refresh.