Re: Wait Event - rdbms ipc message

From: Riyaj Shamsudeen <>
Date: Tue, 7 Feb 2012 11:23:59 -0600
Message-ID: <>

Hello Jon

   'rdbms ipc message' simply means exactly that the process is waiting for an IPC message. There are many processes which can wait for this event, for example, LGWR can wait for this wait event for more work, DBWR can wait for this event etc. Usually, this event can be ignored, but not always.

   Question is which process is suffering from this issue? How is it affecting the application performance?

Riyaj Shamsudeen
Principal DBA,
Ora!nternals - - Specialists in Performance, RAC and EBS
OakTable member and Oracle ACE Director

Co-author of the books: Expert Oracle
Practices<>, Pro Oracle SQL, Expert PL/SQL

On Tue, Feb 7, 2012 at 9:56 AM, CRISLER, JON A <> wrote:

> Oracle RAC 11g, AWR reports shoes the metric "rdbms ipc message" as the #1
> in Top 5 wait events.
> I have to admit I don't think I have seen this before, and I am not sure
> where to look-
> 11gR2 on Red Hat Linux 5 64 bit, ASM to SAN.
> Any suggestions ?
> --

Received on Tue Feb 07 2012 - 11:23:59 CST

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