From 8i DBWR writes a checkpoint every 3 seconds. This is normal behaviour.
--
Niall Litchfield
Oracle DBA
Audit Commission Uk
<johnt_at_tman.dnsalias.com> wrote in message
news:gvQH7.3090$lY5.2302894_at_newssvr28.news.prodigy.com...
> Hi, I have an aggravation w Oracle 901 on SUSE Linux 7.2. Basically,
> when the instance is running, it decides to write to the disk every
> 3-4 seconds. vmstat tells me it is writing about 10-20 blocks. I
> can tell that this is Oracle cause it doesn't happen when I shut down
> the server.
>
> This happens even if there are no clients connected. Matter of fact,
> I started up Oracle, the 3-second writes started, and continued for
> over 24 hours (to this point). During this time-frame, not a single
> client connected.
>
> So it is not a huge deal, but these writes to disk must be flushing
> through buffer, because every write creates an audible click from the
> hard drive. It is like my hard drive is clicking to time when Oracle
> is running.
>
> If it matters, the server has 756M RAM, max pool used by Oracle is
> about 500M, and it makes extensive use of raw I/O, e.g. /dev/raw/...
>
> Any ideas what Orcle is doing and if it can/ should be fixed?
>
> Thanks,
> JT.
>
>
>
Received on Mon Nov 12 2001 - 08:19:41 CST
