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тАО05-10-2007 08:17 PM
тАО05-10-2007 08:17 PM
Tru64 Unix Swap space is below 10 percent
I am getting messages that 'the swap swap is below 10 percent' and some times 'not able to allocate the requested swap space'. It's is old system. Oracle database is running on this system.
Below is the configuration of my system:
OS : OSF1 V4.0 1229 alpha
Memory: 256 MB
Swap space : 512 MB
So I want to increase the swap space. I have only one partition is free in one of the Hard disk which is the system disk. What I mean is it contains the /, /usr /var and the existing swap. The diskconfig of the same is as below:
# size offset fstype [fsize bsize cpg] # NOTE: values not exact
a: 2097152 0 AdvFS # (Cyl. 0 - 412*)
b: 1048576 2097152 swap # (Cyl. 412*- 619*)
c: 35565080 0 unused 0 0 # (Cyl. 0 - 7000)
d: 2097152 3145728 AdvFS # (Cyl. 619*- 1032*)
e: 2097152 5242880 AdvFS # (Cyl. 1032*- 1444*)
f: 14680064 7340032 AdvFS # (Cyl. 1444*- 4334*)
g: 8415779 22020096 AdvFS # (Cyl. 4334*- 5991*)
h: 5129205 30435875 unused 0 0 # (Cyl. 5991*- 7000)
Can I use the last partition ( that is 'h') for the additional swap partition? Right now I can't go for RAM increase.
Please suggest.
Thanks & Regards,
Martin
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тАО05-10-2007 08:40 PM
тАО05-10-2007 08:40 PM
Re: Tru64 Unix Swap space is below 10 percent
Yes you should be able to use the h partition to add some swap as it doesn't appear to be used.
Define the new partition in /etc/fstab and install with swapon.
# man swapon
for more info...
Hope this helps,
Regards,
Rob
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тАО05-10-2007 08:53 PM
тАО05-10-2007 08:53 PM
Re: Tru64 Unix Swap space is below 10 percent
/etc/sysconfigtab file (not /etc/fstab).
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тАО05-10-2007 08:54 PM
тАО05-10-2007 08:54 PM
Re: Tru64 Unix Swap space is below 10 percent
Cheers,
Rob
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тАО05-10-2007 08:58 PM
тАО05-10-2007 08:58 PM
Re: Tru64 Unix Swap space is below 10 percent
I will get back to you if there is any problem.
Thanks & Regards,
Martin
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тАО05-10-2007 11:29 PM
тАО05-10-2007 11:29 PM
Re: Tru64 Unix Swap space is below 10 percent
http://forums1.itrc.hp.com/service/forums/helptips.do?#28
Cheers,
Rob
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тАО05-11-2007 02:39 AM
тАО05-11-2007 02:39 AM
Re: Tru64 Unix Swap space is below 10 percent
An alternative MIGHT be to switch to lazy swap mode = overcommitment mode. THis is more flexible, uses less ressources, but it hurts much more if you ever really run out as the OS in stead of preventing a new process from being creates will pick a random process to shoot down which is likely to be a criticsal Oracle process
Just use man pages for swapon and
/sbin/swapdefaults
Or google for +tru64 +v4 +lazy
Hein.