Disk Group requires rebalance because at least one disk is low on space.

Question

I am getting alert over OEM Grid as below.
Message=Disk Group DSKGRP_UAT_01 requires rebalance because at least one disk is low on space.
Metric=Disk Minimum Free (%) without Rebalance
I tried query with;
select GROUP_NUMBER, DISK_NUMBER ,TOTAL_MB,FREE_MB ,(FREE_MB/TOTAL_MB)*100 from v$asm_disk order by 5 desc;
to find the disk group breached the threshold.
Let me know how can i query and find each file size on ASM Disk.
Edited by: Sivaprasad S on Jun 3, 2011 3:25 AM

Answer 1

Try this one:
select a.group_number , a.name , b.bytes , count(*) over ( partition by a.group_number , a.file_number , a.file_incarnation) doublecount
from v$asm_alias a , v$asm_file b
where a.group_number=b.group_number and a.file_number=b.file_number and a.file_incarnation = b.incarnation Note that there is a column named doublecount - if the value in that column is larger than one then we have two (or more) asm synonyms pointing to the same file. This should be taken into consideration when computing disk space.