about add more cpus.. [message #261963] |
Fri, 24 August 2007 03:42 ![Go to next message Go to next message](/forum/theme/orafaq/images/down.png) |
hot3b3c
Messages: 8 Registered: July 2007
|
Junior Member |
|
|
Dear All:
Our database version is 8.1.7 for IBM AIX5L,
we add cpus from 4 processor to 8 processor.
Does any parameter need to modify?
|
|
|
Re: about add more cpus.. [message #261968 is a reply to message #261963] |
Fri, 24 August 2007 04:01 ![Go to previous message Go to previous message](/forum/theme/orafaq/images/up.png) ![Go to next message Go to next message](/forum/theme/orafaq/images/down.png) |
![](http://www.orafaq.com/forum/images/custom_avatars/102589.gif) |
Michel Cadot
Messages: 68678 Registered: March 2007 Location: Nanterre, France, http://...
|
Senior Member Account Moderator |
|
|
Nothing to do if you didn't hard-code parallelism degree.
Take care that doubling the number of processors does not necessarily means halfing the response time, it can make things worse.
Regards
Michel
[Edit: one word missing]
[Updated on: Fri, 24 August 2007 06:13] Report message to a moderator
|
|
|
Re: about add more cpus.. [message #261991 is a reply to message #261968] |
Fri, 24 August 2007 05:25 ![Go to previous message Go to previous message](/forum/theme/orafaq/images/up.png) |
JRowbottom
Messages: 5933 Registered: June 2006 Location: Sunny North Yorkshire, ho...
|
Senior Member |
|
|
It can make things MUCH worse.
Why are you increasing the number of processors?
Have you identified that you are currently CPU bound?
|
|
|