Re: Does IPC help performance?

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: Thu, 22 Jul 1999 22:39:40 +0100
Message-ID: <932679877.17062.0.nnrp-08.9e984b29@news.demon.co.uk>

The RDBMS IPC MESSAGES event is almost always down to things like the dbwr 3 second idle write, and similar idling activity from the other background processes.

Nothing to worry about. There are various other causes for IPC messaging (e.g. segment checkpoints) but you might set your mind at rest by demonstrating that the figures for this event in v$system_event are very close to the sum of the figures for dbwr et. al. in v$session_event.

Jonathan Lewis
Yet another Oracle-related web site: www.jlcomp.demon.co.uk

Sybrand Bakker wrote in message <379753df.983567_at_news.demon.nl>...
>
>1. You won't be able to connect as a 'local' user anymore, so you
>won't be able to stop the database, unless you set remote_os_authent =
>true and the other usual measures.
>2. When I was working on Unix sites, my number of waits for RDBMS IPC
>messages was always high. Research showed it shouldn't be a problem.
>However, I'm a bit anxious about it too
>3 background processes are ALWAYS using IPC.
>
Received on Thu Jul 22 1999 - 16:39:40 CDT