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тАО09-16-2009 06:04 AM
тАО09-16-2009 06:04 AM
Memory on HP-UX with Oracle
Hi all,
got a strange problem here. Configured an Oracle DB to use 24GB of Memory on an HP-UX B.11.31 with 32GB RAM.
Oracle v$'s tell me, that it would take 24GB for SGA and PGA. Fine!
'top' tells me rubbish, saying there are 10GB real mem whereof 3GB are in use. 'vmstat' is useless too! 'swapinfo' comes nice, showing me 32GB AVAIL and 17GB USED which is ~55%
But now: 'glance' shows me 100% in use and swap at 50%. Also the Oracle Enterprise Manager tool warns me, that 100% Memory are used.
Suming up all 'oracle' processes from 'ps' shows me, that the user oracle uses 17GB.
Whom should I believe then?
Cheers,
Steff
got a strange problem here. Configured an Oracle DB to use 24GB of Memory on an HP-UX B.11.31 with 32GB RAM.
Oracle v$'s tell me, that it would take 24GB for SGA and PGA. Fine!
'top' tells me rubbish, saying there are 10GB real mem whereof 3GB are in use. 'vmstat' is useless too! 'swapinfo' comes nice, showing me 32GB AVAIL and 17GB USED which is ~55%
But now: 'glance' shows me 100% in use and swap at 50%. Also the Oracle Enterprise Manager tool warns me, that 100% Memory are used.
Suming up all 'oracle' processes from 'ps' shows me, that the user oracle uses 17GB.
Whom should I believe then?
Cheers,
Steff
3 REPLIES 3
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тАО09-16-2009 06:12 AM
тАО09-16-2009 06:12 AM
Re: Memory on HP-UX with Oracle
Hi Steff:
Trust 'glance' as it's architected with an intimate knowledge of the HP-UX kernel.
Summing process sizes using 'ps' doesn't take into account dynamic library and shared memory. That is, it is difficult to apportion these.
Regards!
...JRF...
Trust 'glance' as it's architected with an intimate knowledge of the HP-UX kernel.
Summing process sizes using 'ps' doesn't take into account dynamic library and shared memory. That is, it is difficult to apportion these.
Regards!
...JRF...
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тАО09-16-2009 10:55 PM
тАО09-16-2009 10:55 PM
Re: Memory on HP-UX with Oracle
Thanks! Interesting that one can find the memory usage only with a non-free program on HP-UX! But the result from glance is congruent with my adjustments. Again, thank you.
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тАО09-17-2009 12:46 AM
тАО09-17-2009 12:46 AM
Re: Memory on HP-UX with Oracle
All efforts to find out how memory led me to a wrong path. No I know, that 'glance' is needed.
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