RE: Prevent ASM from using any hugepages
- From: "Bobak, Mark" <Mark.Bobak@xxxxxxxxxxxx>
- To: Oleksandr Denysenko <odenysenko@xxxxxxxxx>
- Date: Fri, 17 May 2013 19:48:54 +0000
Yeah, sorry, Chris pointed that out. I've been away from 10g for quite a while
now....sigh....
From: Oleksandr Denysenko [mailto:odenysenko@xxxxxxxxx]
Sent: Friday, May 17, 2013 3:43 PM
To: Bobak, Mark
Cc: ora_kclosson@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx;
Christopher.Taylor2@xxxxxxxxxxxx
Subject: RE: Prevent ASM from using any hugepages
Mark,
It's 10.2 so no AMM...
Oleksandr Denysenko
17.05.2013 22:39 ÐÏÌØÚÏ×ÁÔÅÌØ "Bobak, Mark"
<Mark.Bobak@xxxxxxxxxxxx<mailto:Mark.Bobak@xxxxxxxxxxxx>> ÎÁÐÉÓÁÌ:
>
> Chris,
>
> Just use AMM (MEMORY_TARGET) for ASM, and it *can't* use hugepages. That's
> the default set up, anyhow. So, just install ASM and forget it, and it won't
> touch any hugepages.
>
> That's how I have all my boxes set up.
>
> I have to add:
>
> Just got back from GLOC, had some discussions about hugepages with a few
> folks. Still surprises me how many people don't bother with hugepages!
>
> My three rules about hugepages are as follows:
>
> 1.) If you're not using hugepages, you're doing it wrong. Period. (Yes,
> ok, for very tiny databases and low loads, it may not be worth the time.
> But, what if that database gets busier over time? Just get used to doing it
> on all your databases.)
> 2.) #1 doesn't apply to ASM instances.
> 3.) 'alter system set use_large_pages = ONLY;' is your friend.
>
> -Mark
>
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