Re: lms flush message acks

alek wrote:
> Hi,
>
> I have a 10gR2 (10.2.0.2) RAC database and I'm trying to figure out
> what the "lms flush message acks" wait event means. In the WAIT
> EVENT section of the AWR report the first place is constantly taken by
> this event and I want to know more about it but unfortunately I cannot
> find any valuable information into the Oracle official documentation or
> on the metalink. How can I diagnose this wait event? What does it mean
> and what are the solutions to be implemented in order to remove this
> bottleneck?
>
> Many thanks.
>
> Alec.

LMS - Global Cache Service Process

I don't know anything about this stuff, but from perusing the docs wonder if there is any actual problem. It might just show that you are waiting on block flushes to disk because everything is just peachy and you are hitting your I/O limits (or you are seeing the result of the fix for log sync bug 4755405). Or it might mean you are using the wrong interconnect. See
http://download-west.oracle.com/docs/cd/B19306_01/rac.102/b14197/monitor.htm

Might be worthwhile asking support.

jg

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