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тАО08-29-2006 10:51 PM
тАО08-29-2006 10:51 PM
Memory utilization in HP-UX for Oracle Database
I facing difficulty to find memory bottlenecks, please guide me. I have attached vmstat and swapinfo data.
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тАО08-29-2006 11:03 PM
тАО08-29-2006 11:03 PM
Re: Memory utilization in HP-UX for Oracle Database
You need to use an tool like glance, or perfview.
Good luck,
Joel.
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тАО08-29-2006 11:04 PM
тАО08-29-2006 11:04 PM
Re: Memory utilization in HP-UX for Oracle Database
According to your swapinfo and vmstat, your system is running just fine, the system is not swapping and your swap utilization since your last reboot is 1% which is very good.
Why do you think that you are having memory bottlenecks?
Regards,
Jaime.
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тАО08-30-2006 12:36 AM
тАО08-30-2006 12:36 AM
Re: Memory utilization in HP-UX for Oracle Database
Did you install the Oracle Enterprise Manager ? If possible, get the Diagnostic package and check your database with it.
Another hint :
use 'ipcs -a' to check all your system memory segments.
Rgds
Alexander M. Ermes
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тАО08-30-2006 12:47 AM
тАО08-30-2006 12:47 AM
Re: Memory utilization in HP-UX for Oracle Database
If you are truly running 9 separate instances of Oracle in just 4Gb of RAM, your machine is not configured correctly. I would allow about 1500 megs per copy of Oracle or about 16 Gb of RAM. Then have your DBA adjust the Oracle SGA sizes for performance. The size of the database has almost no relation to the amount of memory needed for good performance.
Bill Hassell, sysadmin