Re: memory is not released on sun fire 280R

From: jordir@fib.upc.edu
Date: Mon Sep 17 2007 - 13:07:53 EDT


Dear sirs,

Perhaps, I must tell it before.

We have running Oracle 9i on this server.

Next follows output from prstat -U oracle9i

   PID USERNAME SIZE RSS STATE PRI NICE TIME CPU
PROCESS/NLWP

1244 oracle9i 17M 6776K sleep 58 0 0:00.00 0.0% tnslsnr/1
  1218 oracle9i 765M 721M sleep 59 0 0:00.00 0.0% oracle/1
  1216 oracle9i 765M 721M sleep 58 0 0:00.00 0.0% oracle/1
  1220 oracle9i 765M 723M sleep 58 0 0:00.00 0.0% oracle/1
  1222 oracle9i 766M 719M sleep 58 0 0:00.00 0.0% oracle/1
  1210 oracle9i 771M 720M sleep 59 0 0:00.00 0.0% oracle/11
  1212 oracle9i 767M 720M sleep 58 0 0:00.00 0.0% oracle/11
  1206 oracle9i 766M 720M sleep 59 0 0:00.00 0.0% oracle/1
  1214 oracle9i 765M 722M sleep 58 0 0:00.00 0.0% oracle/1
  1224 oracle9i 765M 719M sleep 59 0 0:00.00 0.0% oracle/1
  1208 oracle9i 769M 722M sleep 59 0 0:00.00 0.0% oracle/18

Perhaps, we have setting better shmsys:shminfo_shmmax variable:

set shmsys:shminfo_shmmax=4294967295

because we have only 2Gbytes of RAM.

I thought there was a problem specific to Sun fire 280R, because we have
two servers that failed. The other server, runs INFORMIX, but in that case
variable shmsys:shminfo_shmmax is next:

shmsys:shminfo_shmmax=268435456

where server has 2Gbytes too.

Is this the problem I suffering?

Thanks again.

Jordi Renye
Facultat Informatica Barcelona - Universitat Politecnica Catalunya
(Faculty of Computer Science)
Catalonia - Spain
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