ORA-15042: ASM disk "2" is missing from group number "1"

Question

Hi,
I'm working on an Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Automatic Storage Management option.
Into the ASM I had 3 diskgroups:
- ARCHIVELOG (4 disks)
- ONLINELOG (1 disks)
- DATA (10 disks)
When I try to startup the ASM instance I got:
A-15042: ASM disk "2" is missing from group number "1"The diskgroup won't be mounted.
I would like to remove that disk and later add a new one.
I can I do that?
I'm not able to mount the ARCHIVELOG diskgroup.
I tried the command
SQL> alter diskgroup archivelog drop disk ARCH3 force;
alter diskgroup archivelog drop disk ARCH3 force
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15001: diskgroup "ARCHIVELOG" does not exist or is not mountedThanks in advance,
Samuel
Edited by: Samuel Rabini on Jan 10, 2012 4:11 PM

Answer 1

As that database is on AWS, I tried this:
- drop diskgroup archivelog
- detach of those 4 disks
- create new 4 disks
- attach new disks
- assign those disks to ASM with oracleasm utilty
- create diskgroup archivelog
It worked.
But because I was on AWS and more because it was the ARCHIVELOG diskgroup.
What would I had to do if it was the DATA diskgroup?
Thanks