Memory at 100%

[neetsw]

Hi I've got an pseries server with 12GB Ram - 4GB is allocated to Oracle. If the server runs for a while it utilizes 100% memory. Is there anything I can do to bring this down - even on days where there is no traffic or activity it is still on 100%. Can I check anything or monitor anything to see if there is a problem somewhere? Or is this normal?

Thanks.

 

[raztaboule]

what do you check to say that ?
are experiencing performance problems ?
running vmstat 1 what the columns pi / po say ?

i'remember a thread someone initiate with same kind of question , the response was "it's normal that the system use all the memory it can use".

 

[Erok]

An AIX system uses any extra memory for file cache, it is normal for the system to look like it has no memory. Run topas and check for %COMP and %NONCOMP memory section. The %COMP is how much RAM is being used by processes, and NON is RAM being used as file cache. If you would like to put a limit on file cache usage of RAM, use the vmstat command.

 

[Erok]

ooops... I meant use the vmtune command, comes with bos.adt.samples