Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
Home -> Community -> Usenet -> c.d.o.server -> Re: DBWR more active than its children
Problem is, on the first system where I activated multiple dbwr's, it's the
children who do most of the work, and this system has a much better
performance.
Any other ideas?
--
Kind reGards,
Hwyl fawr,
Gerard
(G.Pille_at_company-benelux.be; ghp_at_skynet.be)
Jonathan Lewis heeft geschreven in bericht
<01bde257$360f81e0$0300a8c0_at_WORKSTATION>...
>
>If 'more active' means 'using more CPU' then this is arguably
>reasonable. When you have multiple writers, dbwr takes a block
>and passes it to a child, the child writes it and informs dbwr.
>
>The CPU cost of this activity is similar at both ends of the
>parent/child
>dialogue, and the CPU cost to the child of invoking a write is not
>going
>to make much difference. So if you have 8 children then dbwr is
>going
>to be more busy than any of its children.
>
...
Received on Thu Sep 17 1998 - 13:15:53 CDT