diskgroup calculations

I am using this query to display the size of the diskgroups in Oracle and manually adding the figures up to get the total size of the diskgroup.

select b.instance_name, a.LABEL,a.NAME,a.TOTAL_MB,a.GROUP_NUMBER from v $asm_disk a, v$asm_client b where a.group_number = b.group_number;

The question I have is:

1. Is there a better way to work out the calculations of total diskgroup size?
2. The above query only works if the diskgroup is managed by ASM. What would I be doing if there is no ASM? What would I have to change in the query above?

Thank you. Received on Wed Jan 14 2009 - 18:06:40 CST