large pages on AIX not used by oracle

From: Andreas Piesk <a.piesk_at_gmx.net>
Date: 13 Jan 2006 15:09:54 -0800
Message-ID: <1137193794.379136.208850@o13g2000cwo.googlegroups.com>

Hi,

i'm trying to convince oracle to use large pages on AIX 5.3 but haven't suceeded so far.
i set v_pinshm=1, maxpin%=80, lgpg_regions=448 and lgpg_size=16777216 using 'vmo' and 'LOCK_SGA=true' in spfile. after rebooting and starting the instance 'svmon' shows no no large pages in use:

# svmon
size inuse free pin virtual
memory 4046848 3711708 335140 2911845 1503108 pg space 524288 5551

work pers clnt lpage
pin 1076604 0 233 1835008
in use 1503010 0 373690 0

pgsize size free
lpage pool 16 MB 448 448

SGA size is 3G. why doesn't oracle use large pages? i already have created a TAR but maybe an oracle-on-AIX expert can help me faster than oracle support :)

regards,
-ap Received on Fri Jan 13 2006 - 17:09:54 CST