Yes, that is likely a bit high. On the other hand, I don't really believe that 80 is an upper limit. We kept getting "Warning: lio_listio returned EAGAIN" until I jacked things up to: minservers = 128 maxservers = 512 maxreqs = 8192 With that, no more of those messages. SAN and quite a few file systems, here. Cheers Nuno On Thu May 27 1:42 , "Allen, Brandon" sent: > >Yes, we're using Async IO and we probably have too many aio servers (maxservers = 400 * 8 processors = 3200 total aioservers). The docs I've read say to set maxservers to 80 at the most, e.g. : http://public.dhe.ibm.com/partnerworld/pub/whitepaper/162b6.pdf > >"limit the maximum number of servers to 10 times the number of disks that are >to be used concurrently, but no more than 80" > >We only have 200 datafiles. I've already asked the Unix admins to consider lowering maxservers in order to free up any excessive resources they may be consuming. > -- //www.freelists.org/webpage/oracle-l