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Home -> Community -> Mailing Lists -> Oracle-L -> RE: relation shared pool elements phys mem
Jeroen
The large pool is an optional memory structure used for Shared Server (MTS), RMAN and PQ operations. It has to be big enough to hold everything it may need as it has no LRU list.
You should try to discover what sessions are running out of memory and why. (Metalink ID:1070975.6 may help).
Your SGA should definitely fit into your physical RAM, although Oracle will still run (slowly) even if it doesn't.
You could also post: Version, platform, Physical RAM, SGA size and whether you use MTS.
Ray
-----Original Message-----
From: Jeroen van Sluisdam [mailto:jeroen.van.sluisdam_at_vrijuit.nl]
Sent: Friday, August 06, 2004 10:30 AM
To: 'oracle-l_at_freelists.org'
Subject: relation shared pool elements phys mem
Hi,
I have an undersized development box where my main problem is the memory
I regularly get
ERROR:
ORA-04031: unable to allocate 48 bytes of shared memory ("large
pool","unknown
object","session heap","UGA heap pool")
I have a shortage of phys memory. I remember that the complete SGA should
fit into
1 memory segment. Is this correct and does this imply also this should be in
phys memory also?
I have a swapfile that is not used extensively.
If I downsize my sga, should i decrease the size of the memory segments as
well to profit from the
decrease ?
Regards,
Jeroen
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