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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Oracle on AIX hangs
Yes, minperm and maxperm have been restricted:
/usr/sbin ->vmstat -v|grep perm
10.0 minperm percentage
20.0 maxperm percentage
hdisk0 contains the swap space and it appears we were paging/swapping to death:
/usr/sbin ->lsps -a
Page Space Physical Volume Volume Group Size %Used Active Auto Type hd6 hdisk0 rootvg 10240MB 1 yes yes l
/opt/oracle ->vmstat 15
System Configuration: lcpu=4 mem=15808MB
kthr memory page faults cpu
----- ----------- ------------------------ ------------ ----------- r b avm fre re pi po fr sr cy in sy cs us sy id wa2 7 4965756 27 0 2 2 437 514 0 1388 30629 13078 11 5 73 11 1 180 4985880 503 0 56 1278 1411 1971 0 1311 5568 2984 27 4 0 69 2 184 4998310 0 0 36 741 853 10011 0 1250 6287 1733 28 3 0 69 1 184 5015464 0 0 44 1069 1228 10090 0 1283 4044 2431 28 3 0 69 1 190 5019796 527 0 43 349 341 382 0 1216 3377 1323 27 1 0 71 1 200 5031743 277 0 41 743 819 951 0 1225 2585 1924 27 2 0 71
Now to figure out why . . .
Thanks,
Brandon
-----Original Message-----
From: parkerpg_at_gmail.com [mailto:parkerpg_at_gmail.com]On Behalf Of Paul G Parker
Sent: Thursday, January 26, 2006 3:19 PM
To: Allen, Brandon; oracle-l_at_freelists.org
Subject: Re: Oracle on AIX hangs
Brandon,
The default settings on AIX for Virtual Memory Management are inappropriate for a database server.
Confirm the settings of minperm and maxperm (use vmstat -v) and check out Metalink note: 316533.1
Another useful site reference is www.aixtips.com
Paul
On 1/26/06, Allen, Brandon <Brandon.Allen_at_oneneck.com> wrote: Yes, I think you might be right - see attached. Unfortunately I didn't save the output of lsps, but I did run it and I'm pretty sure it said 49% used. Now we just need to find the cause of the paging.
Thanks,
Brandon
-----Original Message-----
From: parkerpg_at_gmail.com [mailto:parkerpg_at_gmail.com]On Behalf Of Paul G Parker
Sent: Thursday, January 26, 2006 2:29 PM
To: Allen, Brandon
Subject: Re: Oracle on AIX hangs
Brandon,
My guess would be excessive paging. What is the output of lsps -a ? Do you have any vmstat output during this "hang"?
Paul
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-- http://www.freelists.org/webpage/oracle-lReceived on Thu Jan 26 2006 - 16:33:18 CST
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