Re: Oracle 10g -RHEL Hugemem

From: hpuxrac <>
Date: Wed, 24 Sep 2008 14:04:55 -0700 (PDT)
Message-ID: <>

On Sep 24, 3:01 pm, Draki <> wrote:
> Hi,
> We have built a new 32 bit RHEL4 server with total RAM 40 GB, as we
> need to run about 25-30 oracle test instances on it. Initially we used
> smp kernel, but instances started shutting down
> on their own very frequently. After googling we figured out that 32
> bit smp does not support more than 16 GB RAM. So last week we migrated
> to Hugemem kernel. It worked fine till yesterday
> when I was creating a new instance I got :
> SQL> startup nomount;
> ORA-27102: out of memory
> Linux Error: 28: No space left on device
> right now we have 17 instances running, all with 500 MB SGA.
> Thanks in Advance
> Navneet

I would recommend using 64 bit linux ... on a system that supports it well.

There's a Red Hat Reference Architecture book ( werner puschitz wrote it I believe ) "Tuning and Optimizing Red Hat Enterprise Linux ( RHEL ) for Oracle 9i and 10g Databases that you should become very familiar with.

Reading that document and proceeding carefully should get you rolling. Received on Wed Sep 24 2008 - 16:04:55 CDT

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