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Hi,
We are in the process of implementing Oracle Resource Plans and while reading the documentation I came across the follwing.
What is the Database Resource Manager?
Typically, when database resource allocation decisions are left to the operating system, you may encounter the following problems:
Excessive overhead
Excessive overhead results from operating system context switching between Oracle servers when the number of servers is high.
Inefficient scheduling
The operating system de-schedules Oracle servers while they hold latches, which is inefficient.
Please note the statements above in bold . I am confused as to what they mean.
Can somebody please throw more light on them.
Thanks
Ronnie
ronnie_yours@yahoo.com
You can if you think you can.
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Ronnie
ronnie_yours@yahoo.com
You can if you think you can.
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It's tough to look intelligent while commenting on something that is taken out of context.
Jeff Hunter
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Originally posted by marist89
It's tough to look intelligent while commenting on something that is taken out of context.
Come on Guru's,
Somebody out there should be able to throw some light on the follwoing statements and still sound/look intelligent. :-)
(1)Excessive overhead results from operating system context switching between Oracle servers when the number of servers is high.
(2) The operating system de-schedules Oracle servers while they hold latches, which is inefficient.
Ronnie
ronnie_yours@yahoo.com
You can if you think you can.
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I'm curious to know under what context oracle is talking about
Excessive overhead
Inefficient scheduling
Could you post the oracle doc links pl....
Reddy,Sam
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it's talking about operating system processes switches
you have to read about unix books to understand context switches in processes, this not about Oracle but Operating system. Context switch is expensive, for example most latches avoid context switch , instead it spins since spinning costs less that a context switch
Scheduling, it must be talking about schedule daemon of processes in OS as well. I am not UNIX expert you might as go to google and search for unix process context switch and process scheduling
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Originally posted by pando
it's talking about operating system processes switches
Thats what I thought. ronnie was talking about this under DBRM context... so just wanted member to post referred documentation links...
Reddy,Sam
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Originally posted by sreddy
I'm curious to know under what context oracle is talking about
Excessive overhead
Inefficient scheduling
Could you post the oracle doc links pl....
http://docs.oracle.com/cd_a87860/doc.../dbrm.htm#5080
Ronnie
ronnie_yours@yahoo.com
You can if you think you can.
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yea well those text is not that easy to understand, I got it because I am reading unix books since last month to understand how unix works
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