From: Bradley Alan (ABradley@omam.com)
Date: Thu Feb 12 2004 - 09:53:41 EST
Hi All,
I have a server that is exhibiting strange tendencies :)
It is a V440 with 8GB Memory and 4 x 1062Mhz CPU's and fibre attached
internal disks.
This system is running Oracle 8.0.5.2.1 Database and Oracle Apps 11.0.3.
It runs fine for a while and suddenly hangs up. What happens is that the
users can no longer get into Oracle Apps, all they see is the hourglass
after trying to login.
If I telnet to the machine when this is happening I can login, but if I run
svrmgrl or do an ls -al /apps (which is on internal disk) it just never
displays anything or returns. If I try an init 6 or init 0 it also doesn't
respond.
All recommended patches from Sun have been applied.
I don't believe this is an oracle issue as this happened the first time when
the server was being setup with SDS mirroring.
One it is rebooted it works fine for a day or so then it happens again.
Any and all idea's would be appreciated.
Regards,
Alan.
-----Original Message-----
From: sunmanagers-bounces@sunmanagers.org
[mailto:sunmanagers-bounces@sunmanagers.org]On Behalf Of Mark Andrews
Sent: 12 February 2004 03:55
To: sunmanagers@sunmanagers.org
Subject: SUMMARY: Performance issues with SunFire V480Rs in a veritas
cluster
A bit of background on this problem. We've got two sparc Solaris 9
Sunfire V480Rs
in a Veritas cluster with the cluster managed by VCS. The cluster offers
nfs services
to a large number of workstations. When i benchmarked the i/o speeds to
the cluster,
i found that the read bandwidth was high, while the write bandwidth was
atrocious.
Turns out the problem was a veritas limitation caused by the number of
nfsd processes
that VCS launches. VCS starts only 16 nfsd processes, irrelevant of the
value of
NFSD_SERVERS in /etc/default/nfs.
Took us awhile to find that one.
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