RE: lock_sga error
- From: Magnus Andersen <Magnus.Andersen@xxxxxxxxxxxxxxx>
- To: "'kevinc@xxxxxxxxxxxxx'" <kevinc@xxxxxxxxxxxxx>, "Oracle-L (E-mail)" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 3 Aug 2005 15:28:29 -0400
Thanks Kevin. I wanted to get my shared memory to stay resident and I did
implement hugtlb. I am not using the indirect_data_buffers since I only
have access to a 1.7 GB SGA at this point.
Magnus
-----Original Message-----
From: Kevin Closson [mailto:kevinc@xxxxxxxxxxxxx]
Sent: Wednesday, August 03, 2005 2:54 PM
To: Oracle-L (E-mail)
Subject: RE: lock_sga error
lock_sga is an OSD init.ora param...it only means something
at the port level.. for instance lock_sga was implemented on the
DYNIX/ptx port, but use_ism was implemented on Sol instead...
Either way, the hope is that the OS complements this param
with shared page tables and hard-locked SysV SHMEM...
neither of which really related to Linux much.
Are you sure you can boot of that init.ora file even with lock_sga
commented out?
Now, if you want your shared memory to stay resident (novel
concept, I know, but it is a bit new to linux) you have to
fiddle around with HUGE_TLB and so on. Also, if using
indirect_data_buffers, you will need to use ramfs over
shmfs because the latter is pageable ...
_____
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Tim Gorman
Sent: Wednesday, August 03, 2005 9:09 AM
To: Oracle-L (E-mail)
Subject: Re: lock_sga error
Why do you want to do this?
on 7/25/05 7:43 AM, Magnus Andersen at Magnus.Andersen@xxxxxxxxxxxxxxx
wrote:
Hi All,
I'm trying to lock my sga in memory on a RedHat Linux 3 AS server. When I
try to start the database with the "lock_sga=true" paramerter in my init
file I get the following error:
SQL> startup nomount;
ORA-27102: out of memory
Linux Error: 12: Cannot allocate memory
SQL>
Any ideas?
Thanks,
Magnus Andersen
Systems Administrator / Oracle DBA
Walker & Associates, Inc.
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