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PARALLELISM - Processor [message #648447] Tue, 23 February 2016 07:57 Go to next message
jesuisantony
Messages: 155
Registered: July 2006
Location: Chennai
Senior Member
Hi Team,

I need to use the datapump will parallelism. I understand that the parallelism value will be based on the number of CPUs. In our machine, we can see 2 core processor on the server properties. But the systeminfo output shows it has 8 logical processors. This means there are 16 processors. I was able to confirm this on the computer management device as well.

To set the value for "PARALLEL" option, do I need to go with the overall logical processors count (16) or core processors (2)?

Regards,
Antony
Re: PARALLELISM - Processor [message #648448 is a reply to message #648447] Tue, 23 February 2016 08:00 Go to previous messageGo to next message
Michel Cadot
Messages: 65849
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator

See CPU_COUNT parameter but you first need to know the ability of your IO subsystem to support parallelism and how much.

Re: PARALLELISM - Processor [message #648449 is a reply to message #648448] Tue, 23 February 2016 08:11 Go to previous messageGo to next message
BlackSwan
Messages: 26204
Registered: January 2009
Location: SoCal
Senior Member
The more resources consumed by datapump, the fewer resources available for OLTP users.
What is advantage if datapump completes a few minutes sooner but the online users can't work during datapump operation?
Re: PARALLELISM - Processor [message #648469 is a reply to message #648448] Tue, 23 February 2016 12:51 Go to previous messageGo to next message
jesuisantony
Messages: 155
Registered: July 2006
Location: Chennai
Senior Member
Thanks Mike. This helps.
Re: PARALLELISM - Processor [message #648470 is a reply to message #648449] Tue, 23 February 2016 12:52 Go to previous message
jesuisantony
Messages: 155
Registered: July 2006
Location: Chennai
Senior Member
Thanks BlackSwan. This scenario is definitely to be considered. At the moment, the server is available for this refresh alone.
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