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Exadata: ASM Instance hangs with RBAL process waiting on "NO FREE BUFFER" (Doc ID 1351531.1)

Last updated on APRIL 12, 2022

Applies to:

Oracle Exadata Storage Server Software - Version 11.2.2.2.0 and later
Information in this document applies to any platform.

Symptoms

You are on Exadata and getting a hang scenario with I/O bottleneck

On closer inspection via AWR reports or other methods you may also find that the archive process is hung.

This issue is intermittent

 i.e. stays for 5 minutes & once the archiving is done , it comes back to normal state

Changes

None known:

There had bee some previous Flash Disk failures but unable to make a determination that this had any relevance or not. As the disks we replaced, we think not.

Cause

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