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тАО08-22-2002 11:24 AM
тАО08-22-2002 11:24 AM
Raw Vs JFS
I'm bit confused over this issue.
We are having over 250 GB of oracle Database.
All these databses are spread across many Vxfs file system. I was reading some of the posts related to this says oracle perform better on Raw device file system.
Can any body throw some light on this Please..??
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тАО08-22-2002 11:37 AM
тАО08-22-2002 11:37 AM
Re: Raw Vs JFS
If you are running 11.11, I suspect that using cooked files (no =direct mount options) will be your best performer; again, the only way to know is to measure for yourself.
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тАО08-22-2002 11:41 AM
тАО08-22-2002 11:41 AM
Re: Raw Vs JFS
Raw used to offer a speed advantage, but the OS and hardware vendors have improved their disk performance. Cooked (VxFS in this case) should perform at least as well as raw.
Stick with VxFS. Excellent performance, and much easier to recover after a crash. (Can't fsck a raw disk...)
That's the high-level view.
Tom
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тАО08-22-2002 11:50 AM
тАО08-22-2002 11:50 AM
Re: Raw Vs JFS
Perhaps this can interest you:
http://veritas.com/products/category/ProductDetail.jhtml?productId=oracleeditionhp
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тАО08-22-2002 11:51 AM
тАО08-22-2002 11:51 AM
Re: Raw Vs JFS
Well OS is 11.00 and Oracle 8.1.6. Mount options for these filesystems are just simple with delaylog. (For ex: /dev/vg08/lvol2 /u91 vxfs delaylog 0 7 )
I've never used mincache or convosync etc with any of the file system. Is it OK to use this option to mount these FS??
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тАО08-22-2002 11:54 AM
тАО08-22-2002 11:54 AM
Re: Raw Vs JFS
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тАО08-22-2002 12:34 PM
тАО08-22-2002 12:34 PM
Re: Raw Vs JFS
Is this option correct..?
mount -F vxfs /dev/vg02/lvol6 /u90 vxfs delaylog,mincache=direct convoysync=direct 0 4
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тАО08-22-2002 12:40 PM
тАО08-22-2002 12:40 PM
Re: Raw Vs JFS
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тАО08-22-2002 12:43 PM
тАО08-22-2002 12:43 PM
Re: Raw Vs JFS
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тАО08-22-2002 12:51 PM
тАО08-22-2002 12:51 PM
Re: Raw Vs JFS
Thanks for the reply.
You mean to say I must use mincache,convosync,delaylog and nodatainlog for all the Oracle file system except for the file systems that has archive and redo logs...Right??
And for these FS Can I use just normal mount like..option /dev/vg02/lvol6 /u34 vxfs delaylog 0 4