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тАО06-22-2001 07:04 AM
тАО06-22-2001 07:04 AM
TYPE Avail Used Free
Dev 1024 0 1024
Res - 1024 -1024
Memory 6278 1405 4873 22%
This is Oracle(8x) DB server runs on hp-ux 11.x
Is this configuration ok? or Do I need to change this.
Solved! Go to Solution.
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тАО06-22-2001 07:10 AM
тАО06-22-2001 07:10 AM
Re: swap Memory
Do you notice any slowness or response time problems?
If it were me, I think I would add more swap space.
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тАО06-22-2001 07:12 AM
тАО06-22-2001 07:12 AM
Re: swap Memory
Rob
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тАО06-22-2001 07:15 AM
тАО06-22-2001 07:15 AM
Re: swap Memory
You are luck enough that swapmem_on = 1 as a kernel default.
You are swapping in memory.
There are lots of links in the forums of responses to kernel tuning and memory management for oracle.
You want to look in the hp-ux -> database forum
where you'll find more.
In the hp-ux -> system administration forum you'll learn how to create swap space (lvcreate -L 1234 -C y -r n ) and swapon on it (/etc/fstab).
Good luck,
Bill
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тАО06-22-2001 07:18 AM
тАО06-22-2001 07:18 AM
Re: swap Memory
There is no complaint as yet from users. But this is further to my earlier query (Compress is slow)http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x9f9e663ce855d511abcd0090277a778c,00.html
How much more swap memory you recommend?
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тАО06-22-2001 07:34 AM
тАО06-22-2001 07:34 AM
Re: swap Memory
I would probably add another 2GB and then monitor swap space usage for a while and then see if you need to add some more.
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тАО06-22-2001 08:00 AM
тАО06-22-2001 08:00 AM
Re: swap Memory
thanks for your quick responce.
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тАО06-22-2001 09:09 AM
тАО06-22-2001 09:09 AM
Re: swap Memory
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тАО06-22-2001 09:25 AM
тАО06-22-2001 09:25 AM
SolutionWhat I would do is just make another LV for swap. You could make it a lower priority than your primary so that it won't get used until the primary gets full. Or you could make it the same priority as the primary so there will be some load balancing.
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тАО06-22-2001 09:36 AM
тАО06-22-2001 09:36 AM
Re: swap Memory
It is very unlikely that you will be able to increase primary swap. Primary swap requires contiguous extent allocation.
You can easily add secondary device swap. Make sure that you assign an equal swap priority as the primary swap, and (ideally) make it the same size to optimize interleaved usage between (or among if you add more than one "secondary") the devices.
You may need to adjust the kernel parameter 'maxswapchunks' in order to allow additional swap declaration. Be sure, too, to enable pseudoswap by setting 'swapmem_on' to one (1).
For a guide to swap managment, take a look at the "HP-UX System Administration Tasks" manual:
http://docs.hp.com/hpux/onlinedocs/B2355-90672/B2355-90672.html
...JRF...