What does the ASM disk group disk status of FORCING mean?

Asset ID:	1-72-1663720.1
Update Date:	2014-06-12
Keywords:

Solution Type Problem Resolution Sure

Solution 1663720.1 : What does the ASM disk group disk status of FORCING mean?

Applies to:

Exadata Database Machine X2-2 Hardware - Version All Versions to All Versions [Release All Releases]
Oracle Exadata Storage Server Software - Version 11.2.2.1.1 to 11.2.3.3.0 [Release 11.2]
Information in this document applies to any platform.

Symptoms

Some disks as seen to be in the status FORCING

Cause

The FORCING status is not documented in the "Oracle® Exadata Storage Server Software User's Guide"

Solution

Since the FORCING status is not documented you may not know what the FORCING status means when you see it.

This is the status you get into if:

A disk fails which causes a rebalance which then also fails.

The FORCING status starts from the point where the rebalance fails.

This could be caused by more than one reason but often this is because available disk space was fully consumed leading to an error.

At the time when the FORCING status is present you can get more detail on the reason for the failure from the gv$asm_operation view.

To get the free space on the disks in case it is a space problem you can run this query
select name,total_mb,free_mb,failgroup from v$asm_disk where group_number=<Group-number-of-the-ASM-group> order by failgroup ;

Once the underlying cause of the failure is corrected, you can re-try the rebalance

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