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Old 11-28-2006, 07:36 AM   #1
Registered: Mar 2006
Location: Ohio, USA
Distribution: Red Hat, Fedora, Knoppix,
Posts: 545

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releasing memory

I have an RHEL 3.0 server running Oracle. The server has only 24 megs of memory free out of 12 gigs on the system.
Oracles SGA can use less than 2 gigs. I know it is not oracle using the majority of it.
Is there a way to free memory without rebooting?
Here is the output of /proc/meminfo:

total: used: free: shared: buffers: cached:
Mem: 12623937536 12602458112 21479424 0 114479104 11224715264
Swap: 8973692928 729088 8972963840
MemTotal: 12328064 kB
MemFree: 20976 kB
MemShared: 0 kB
Buffers: 111796 kB
Cached: 10961480 kB
SwapCached: 156 kB
Active: 2486148 kB
ActiveAnon: 1917724 kB
ActiveCache: 568424 kB
Inact_dirty: 6966720 kB
Inact_laundry: 1820964 kB
Inact_clean: 291836 kB
Inact_target: 2313132 kB
HighTotal: 11661040 kB
HighFree: 5288 kB
LowTotal: 667024 kB
LowFree: 15688 kB
SwapTotal: 8763372 kB
SwapFree: 8762660 kB
CommitLimit: 14927404 kB
Committed_AS: 4808956 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB

Any hints with this problem greatly appreciated.
Old 11-28-2006, 08:07 AM   #2
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Registered: Jan 2001
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This is asked all the time and it's normal in Linux for all of your memory to be used.

Notice in your output this line:

Cached: 10961480 kB

Most of your or all of it is cached, you're pretty much only using 2GB of it right now as you can see that under:

Active: 2486148 kB
Old 11-28-2006, 10:34 AM   #3
Registered: Mar 2006
Location: Ohio, USA
Distribution: Red Hat, Fedora, Knoppix,
Posts: 545

Original Poster
Rep: Reputation: 33
Thanks Tk!!!!!!!


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