|
|
Sponsored Content
Operating Systems
HP-UX
Performance problem - waiting on cache
Post 302489776 by ctsgnb on Friday 21st of January 2011 02:57:45 PM
01-21-2011
Check that the query is correctly designed
Check your memory sizing
Check your I/O configuration (asynchronous?)
Check your OS kernel parameters as well as your Oracle parameters
Do you have direct I/O ?
(also have a look at post #29 of this thread )
Any error message in the alert<DB_SID>.log ?
Get in touch with your Oracle DBA and ask him (or get it on your own) , the corresponding Oracle Installation Guide, you will find some sizing requirements as well as rule of thumb and advice for parameter tuning (also for some of your OS kernel parameters).
Any other appli running on that superdom ?
Is this oracle instance a new install or does it run for a long time and suddenly has performance issue ?
Are you running PA-RISC or Itanium?
You might also read this and read carefully the OS-Tuning and Kernel Tuning part on page 18 (and of course also the rest of the document ...
)
You might want to work closely with your DBA if you are not familiar with oracle because this kind of troubleshooting may require OS+DBA knowledge.
Also ask your DBA if he has activated the automatic SGA and PGA management (he should, since those functionnalities are available in your oracle version)
Check your memory sizing
Check your I/O configuration (asynchronous?)
Check your OS kernel parameters as well as your Oracle parameters
Do you have direct I/O ?
(also have a look at post #29 of this thread )
Any error message in the alert<DB_SID>.log ?
Get in touch with your Oracle DBA and ask him (or get it on your own) , the corresponding Oracle Installation Guide, you will find some sizing requirements as well as rule of thumb and advice for parameter tuning (also for some of your OS kernel parameters).
Any other appli running on that superdom ?
Is this oracle instance a new install or does it run for a long time and suddenly has performance issue ?
Are you running PA-RISC or Itanium?
You might also read this and read carefully the OS-Tuning and Kernel Tuning part on page 18 (and of course also the rest of the document ...
)You might want to work closely with your DBA if you are not familiar with oracle because this kind of troubleshooting may require OS+DBA knowledge.
Also ask your DBA if he has activated the automatic SGA and PGA management (he should, since those functionnalities are available in your oracle version)
Last edited by ctsgnb; 01-21-2011 at 04:34 PM..
|
|
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hello,
I have a mail server (sendmail) with SUNOS 5.5.1. Just recently it began to respond very slowly.
I used vmstat to check the performance data. Only interupt, system call and CPU context swiching are relatively high. Other statistics are normal, especially CPU utilization are very... (5 Replies)
Discussion started by: caoai
5 Replies
2. UNIX for Advanced & Expert Users
hi,
What is the difference between UBC cache and Metadata cache ? where can i find UBC cache Hits and Metadata cache Hits in hp-ux?
Advanced thanx for the help. (2 Replies)
Discussion started by: sushaga
2 Replies
3. Solaris
Hi All,
There is a virtual user "ecoouk" which logs on to the server and runs some scripts. I want to know how much server performance can I gain if I put off all the scripts run by this user.
Please tell me how to analyse how much resources a specific user is using.
Regards,
Abhishek (3 Replies)
Discussion started by: max29583
3 Replies
4. UNIX for Dummies Questions & Answers
I have a Teradata Machine, using MP-RAS Unix, with a 1000 Intel Ethernet card and a Cisco switch.
If I configure the ethernet card and the switch to auto, so they negotiate to 1000, or configure the ethernet card and switch manually to 1000Full or 100Full, the velocity is very very low.
Only... (2 Replies)
Discussion started by: cuatrodos
2 Replies
5. Emergency UNIX and Linux Support
This is a weird problem I've been butting my head against for days now...
I have two OpenVPN servers set up with identical configurations except for the keys. One of them is hosted in a datacenter with a large backbone, the other is hosted on my home server's limited residential internet. One... (9 Replies)
Discussion started by: Corona688
9 Replies
6. Linux
Hi all
I saw in Microsoft web site www.SysInternals.com a tool called CoreInfo from able to print out on screen the size of the Data and Instruction caches of your processor, the Locigal to Physical Processor mapping, the number of the CPU sockets. etc..
Do you know if in Linux is available a... (2 Replies)
Discussion started by: manustone
2 Replies
7. Linux
Hi All,
could any one point out any open source test-suites for "File cache" testing and as well as performance test suites for the same. Currently my system is up with Linux/ext4.
Regards
Manish (0 Replies)
Discussion started by: hmanish
0 Replies
8. Solaris
I have DNS Server running in solaris 10 .
There is website called exaple.com ,whcih was hosted in this dns server with IP 1.2.3.4 ,now we deleted the DNS entry of that website from our DNS Server (db.exmaple.com is deleted from named.conf ) and it is hosted with some other name server with IP... (1 Reply)
Discussion started by: sandeep.tk
1 Replies
9. OS X (Apple)
So I worked out a script for Mac OSX from an existing script. This script checks the versionnumber of a plugin and a package. If the plugin version is different from the package it has to update the plugin. The script works fine but the final check fails.
Here is my script:
#compare version... (6 Replies)
Discussion started by: mattiasvdm
6 Replies
LEARN ABOUT MINIX
httppower
httppower(8) powerman httppower(8) NAME
httppower - communicate with HTTP based power distribution units SYNOPSIS
httppower [--url URL] DESCRIPTION
httppower is a helper program for powerman which enables it to communicate with HTTP based power distribution units. It is run interac- tively by the powerman daemon. OPTIONS
-u, --url URL Set the base URL. INTERACTIVE COMMANDS
The following commands are accepted at the httppower> prompt: auth user:pass Authenticate to the base URL with specified user and password, using ``basic'' HTTP authentication which sends the user and password over the network in plain text. seturl URL Set the base URL. Overrides the command line option. get [URL-suffix] Send an HTTP GET to the base URL with the optional URL-suffix appended. post [URL-suffix] key=val[&key=val]... Send an HTTP POST to the base URL with the optional URL-suffix appended, and key-value pairs as argument. FILES
/usr/sbin/httppower /etc/powerman/powerman.conf ORIGIN
PowerMan was originally developed by Andrew Uselton on LLNL's Linux clusters. This software is open source and distributed under the terms of the GNU GPL. SEE ALSO
powerman(1), powermand(8), httppower(8), plmpower(8), vpcd(8), powerman.conf(5), powerman.dev(5), powerman-devices(7). http://sourceforge.net/projects/powerman powerman-2.3.5 2009-02-09 httppower(8)