One other potential gotcha is if you have dynamic SGA enabled (IIRC correctly, it's indirectly enabled/disabled based on your instance settings, so it's not always obvious when it is or isn't being used). When that happens, it _reserves_ as much swap as SGA (and will fail to startup with a vague and unhelpful error message if there isn't sufficient swap available). If you don't plan to take advantage of the feature, I'd suggest making sure it's turned off and save you some headaches.
On Tue, Nov 23, 2010 at 8:12 AM, Octave Orgeron <unixcons...@yahoo.com> wrote: > It's probably a good idea to do both. That way the zone has enough free memory > for any additional software or non-oracle related software/services that are > running. So if your database needs 8GBs of shared memory, you could set the > max-shm-memory to 4GB and the max-shm-ids to 2. Then set the max memory for > the > zone to 8.5 or 9GB to give you 512MB or 1GB of memory for other stuff running > in > the zone. Definitely need to keep enough extra RAM laying around for logins > and > stuff. > > *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* > Octave J. Orgeron > Solaris Virtualization Architect and Consultant > Web: http://unixconsole.blogspot.com > E-Mail: unixcons...@yahoo.com > *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* > > > > ----- Original Message ---- > From: Mike DeMarco <mikej...@yahoo.com> > To: opensolaris-discuss@opensolaris.org > Sent: Tue, November 23, 2010 7:19:15 AM > Subject: Re: [osol-discuss] Zones zone.max-shm-memory setting. > > zone.max-shm-memory defines the maximum size of a shared memory segment. So if > it is set to 4Gig then the maximum shared memory segment will be 4 Gig. You > can > have up to zone.max-shm-ids segments set so this still can consume all of > your > memory.. If you want to limit the full amount of memory a zone can use you > would > set capped-memory, physical in your zone definition to the total amount of > memory you want the zone to have. > -- > This message posted from opensolaris.org > _______________________________________________ > opensolaris-discuss mailing list > opensolaris-discuss@opensolaris.org > > > > > _______________________________________________ > opensolaris-discuss mailing list > opensolaris-discuss@opensolaris.org > _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
