Hi to All,

this is my "scenario".

1) I have a Server Poweredge Dell T100 with RHEL5 installed;
2) This Server is new and the hardware has been tested;
3) On this Server I have installed Oracle DB 11g R2;

I am connected to Server through Client in a little home Intranet, and
all work without problems.


But I realize that, in a short time, the server response time grow
greatly, and there is a remarkably deterrioration of performance and I-O.


Often, I must restart the server.

Someone has an idea o suggestion for me ?

Best Regards
Gaetano

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On Wed, 8 Sep 2010, Nicosia Gaetano wrote:


Hi to All,

this is my "scenario".

1) I have a Server Poweredge Dell T100 with RHEL5 installed;
2) This Server is new and the hardware has been tested;
3) On this Server I have installed Oracle DB 11g R2;

I am connected to Server through Client in a little home Intranet, and all
work without problems.


But I realize that, in a short time, the server response time grow greatly,
and there is a remarkably deterrioration of performance and I-O.


Often, I must restart the server.

Someone has an idea o suggestion for me ?


What shows in dmesg and /var/log/messages?

I realize that you've tested the hardware. How have you tested it? Have
you run memtest86+ on this system? Have you run Dell Diagnostics on
this system? Does this problem occur when Oracle is not running, or only
when it is running?


Barry

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Are you using scanip ? (Virt ip/networking)

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We have a similar issue and it's *always* the database, more
specifically it's the SQL code running in the database.

Are you an Oracle DBA? because you'll need to be to fix these sorts of
problems.

-----Original Message-----
From: redhat-list-bounces@redhat.com
[mailto:redhat-list-bounces@redhat.com] On Behalf Of Nicosia Gaetano
Sent: Wednesday, 8 September 2010 6:19 p.m.
To: General Red Hat Linux discussion list
Subject: RHEL5 performance


Hi to All,

this is my "scenario".

1) I have a Server Poweredge Dell T100 with RHEL5 installed;
2) This Server is new and the hardware has been tested;
3) On this Server I have installed Oracle DB 11g R2;

I am connected to Server through Client in a little home Intranet, and
all work without problems.

But I realize that, in a short time, the server response time grow
greatly, and there is a remarkably deterrioration of performance and
I-O.

Often, I must restart the server.

Someone has an idea o suggestion for me ?

Best Regards
Gaetano

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Thank You to all


because you'll need to be to fix these sorts of problems.


Yes I am an Oracle DBA user.The deterioration of performance happen
specially during the I-O to DB or during the call to PHP pages that use
Oracle DB. How can I to fix the problem ?



What shows in dmesg and /var/log/messages?


No errors founded in dmesg and /var/log/messages


Have you run memtest86+ on this system? Have you run Dell Diagnostics on this system?


Yes. All tests are passed succefully.


Are you using scanip ? (Virt ip/networking)


Scanip report that all is correct.

Any suggestions are welcome.

Best Regards.

Gaetano





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The first thing I'd do is ensure I have EM running (dbconsole or grid
control), this will tell you what the actual DB performance is like and
what queries are bad.

-----Original Message-----
From: redhat-list-bounces@redhat.com
[mailto:redhat-list-bounces@redhat.com] On Behalf Of Nicosia Gaetano
Sent: Thursday, 9 September 2010 5:26 p.m.
To: General Red Hat Linux discussion list
Subject: Re: RHEL5 performance


Thank You to all

>> because you'll need to be to fix these sorts of problems.

Yes I am an Oracle DBA user.The deterioration of performance happen
specially during the I-O to DB or during the call to PHP pages that use
Oracle DB. How can I to fix the problem ?

>> What shows in dmesg and /var/log/messages?

No errors founded in dmesg and /var/log/messages

>> Have you run memtest86+ on this system? Have you run Dell
Diagnostics on this system?

Yes. All tests are passed succefully.

>> Are you using scanip ? (Virt ip/networking)

Scanip report that all is correct.

Any suggestions are welcome.

Best Regards.

Gaetano





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