Thursday, June 20, 2013

ORA-15032: not all alterations performed ORA-15027: active use of diskgroup "DATA" precludes its dismount

I was trying to start "fresh", so I tried to dismount the ASM diskgroups before trying to drop them. While trying to dismount using the ASM Configuration Assistant, I got the following error messages.

ORA-15032: not all alterations performed
ORA-15027: active use of diskgroup "DATA" precludes its dismount


The fix to this is to drop the database first, and after that dismount the ASM Diskgroup