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тАО10-29-2002 11:39 AM
тАО10-29-2002 11:39 AM
sleep, run, sssllllleepppp
It almost looks like the TCP handshaking is intermittently interrupted. The processes flow fluently for a period of time and then, bang, an oracle process just hangs there for up to almost 1 minute before running. Why?
NFS is running on this server, Samba is running on this server. Could that be interferring?
What logs would show me events on sockets, port 1521?
Any one have to deal with something similar?
Appreciate any feedback.
TIA
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тАО10-29-2002 11:44 AM
тАО10-29-2002 11:44 AM
Re: sleep, run, sssllllleepppp
Anyway, you say you've got 1 disk that is 100% busy. That's not a good thing. The first thing I would do is see what is on that disk. Is it an Oracle data file, an index or something else entirely? Then I'd see what I could do to rememdy that 100% disk if it has something to do with Oracle.
If that disk truly isn't a problem, then you can start looking at other things.
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тАО10-29-2002 11:55 AM
тАО10-29-2002 11:55 AM
Re: sleep, run, sssllllleepppp
Some suggestions and ideas.
Use "top" to see what processes are taking high CPU and high memory.
Your database should be spanning multiple disks so as to balance the i/o's.
You should try to extend your volume group for the same and distribute your database. Another option is moving your database to a faster disk (if any) using pvmove.
When your disk usage shows 100 % there is no association with tcp handshaking. Don't just look for i/o's, look for swap space also. This will give you an idea on why processes are not running fine. The /var/adm/syslog/syslog.log is the best solution for you here today to show you disconnected sessions. If you want to see what sockets are using port 1521 you may use
netstat -an | grep 1521
or use the "lsof" utility
lsof -i @ hostname:1521
Let me know if this helps.
Regards,
Anil
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тАО10-29-2002 11:57 AM
тАО10-29-2002 11:57 AM
Re: sleep, run, sssllllleepppp
As if periodically something connects! to the Oracle server and interferes with the processes, but what?
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тАО10-29-2002 01:22 PM
тАО10-29-2002 01:22 PM
Re: sleep, run, sssllllleepppp
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тАО10-29-2002 01:30 PM
тАО10-29-2002 01:30 PM
Re: sleep, run, sssllllleepppp
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тАО10-30-2002 05:09 AM
тАО10-30-2002 05:09 AM
Re: sleep, run, sssllllleepppp
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тАО10-30-2002 05:10 AM
тАО10-30-2002 05:10 AM
Re: sleep, run, sssllllleepppp
Frankie,
Do you have glance/measureware so that you can drill down and look at the issue?
live free or die
harry
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тАО10-30-2002 06:03 AM
тАО10-30-2002 06:03 AM
Re: sleep, run, sssllllleepppp
Install the 60 day trial version of glance from the apps cd - fire it up and watch the activity.
Have you also checked yor logs /var/adm/syslog/syslog.log - dmesg -----
How full are your disks ?
Lots of things can slow a system down and I would imaging the TCP is an effect and not a cause.
Paula
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тАО10-30-2002 06:28 AM
тАО10-30-2002 06:28 AM
Re: sleep, run, sssllllleepppp
I notice in the logs that tftpd times out every 10 minutes, this service runs on both servers, could that have an impact?
The only other thing I can think of, is because of increased traffic on the Oracle instances, possibly the kernel parameters have to be looked at, along with the SGA.