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тАО12-13-2004 01:41 AM
тАО12-13-2004 01:41 AM
HP-UX 11i / Oracle 9.2 options for mount
I've read following for optmize Oracle on HP-UX :
===============================
Using Online JFS improves performance
Set these mount options
delaylog
nodatainlog
mincache=direct
convosync=direct
======================================
I've read man pages , anyway is not clear to me about advantages .
What exactly do these options and , above all , what could be cons ?
Thanks
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тАО12-13-2004 01:51 AM
тАО12-13-2004 01:51 AM
Re: HP-UX 11i / Oracle 9.2 options for mount
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=193104
In short, Oracle has its own memory management (SGA). Disabling buffer cache on Oracle data filesystems is a way to avoid double buffer the same data.
Chris
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тАО12-13-2004 01:58 AM
тАО12-13-2004 01:58 AM
Re: HP-UX 11i / Oracle 9.2 options for mount
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=753721
Chris
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тАО12-13-2004 02:51 AM
тАО12-13-2004 02:51 AM
Re: HP-UX 11i / Oracle 9.2 options for mount
you can check the attached document
Regards
Jean-Luc
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тАО12-13-2004 02:57 AM
тАО12-13-2004 02:57 AM
Re: HP-UX 11i / Oracle 9.2 options for mount
I would also refer to the white papers indicated in this thread
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=712921
JFS tuning will give a better understanding for these parameters.
From my post (cf. 1st reply for you) last year, it does not seem that we'll get magic.
tuning the application / SQL should be the 1st step to improve the overall performance
Regards
Jean-Luc
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тАО12-13-2004 11:12 PM
тАО12-13-2004 11:12 PM
Re: HP-UX 11i / Oracle 9.2 options for mount
You will be interested with (attached) the UX performance cookbook.
As a matter of fact, I'd be interested in performance results when you change these parameters.
You will have to record a performance baseline (OS & Oracle) before the changes, then new measures and compare.
Just let us know with your findings
Regards
Jean-Luc
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тАО12-13-2004 11:15 PM
тАО12-13-2004 11:15 PM
Re: HP-UX 11i / Oracle 9.2 options for mount
I've a lot of material to look now :-)