RE: Implementing ADDRESS WINDOWING EXTENSIONS (AWE) for increased memory
- From: M Rafiq <rafiq9857@xxxxxxxxxxx>
- To: Paul Drake <bdbafh@xxxxxxxxx>
- Date: Thu, 7 Feb 2008 14:52:43 -0500
Paul,
Thanks for sharing. It is a vendor supported application database and they
required us to bump us sga size. Let us see how it goes. Normal dedicated
connections to databases remains in the range of 40-60.
Regards
Rafiq
Date: Thu, 7 Feb 2008 12:26:03 -0500From: bdbafh@xxxxxxxxxxx:
rafiq9857@xxxxxxxxxxxxxxxxxx: Re: Implementing ADDRESS WINDOWING EXTENSIONS
(AWE) for increased memoryCC: jkstill@xxxxxxxxx; davidg.oraclel@xxxxxxxx;
oracle-l@xxxxxxxxxxxxx
On Thu, Feb 7, 2008 at 12:08 PM, M Rafiq <rafiq9857@xxxxxxxxxxx> wrote:
I just applied the following 2 coomands and restarted database without any
issues. It is Window 2003 with 4GB ram. No other changes made to any other
parameter or any file. SQL> ALTER SYSTEM SET SGA_MAX_SIZE = 1500M SCOPE =
SPFILE;System altered.SQL> ALTER SYSTEM SET SGA_TARGET = 1500M SCOPE =
SPFILE;System altered. Instance_Name Host_Name Db_version startup_time
Status Db_Status--------------- ------------ ----------
------------------ ---------- ----------ABC WINDOWS2003
10.1.0.4.0 07-FEB-08 11:43:24 OPEN ACTIVESQL> show parameter sgaNAME
TYPE
VALUE------------------------------------ -----------
------------------------------lock_sga boolean
FALSEpre_page_sga boolean FALSEsga_max_size
big integer 1577058304sga_target big
integer 1577058304SQL>RegardsRafiq
Rafiq,If the /3GB flag isn't set, I'd bet a hefty sum that if you throw 300
dedicated server sessions at that with enough usage to work the pga, populate
the buffer cache and the shared pool ... and you'd see ora-4031 errors and TNS:
internal restriction exceeded messages during connection attempts.The OS limit
for the oracle.exe process isn't 2*1024*1024*1024 bytes. Its much lower.It also
kicks in for the virtual memory, not the committed memory.This brings back
memories, albeit not fond ones.good luck.Paul
Date: Wed, 6 Feb 2008 14:44:19 -0800From: jkstill@xxxxxxxxxxx:
davidg.oraclel@xxxxxxxxxxxxxxx: Re: Implementing ADDRESS WINDOWING EXTENSIONS
(AWE) for increased memoryCC: oracle-l@xxxxxxxxxxxxx
From the ML Note:
The size of this window is defined by a registry setting in the HOME key for
Oracle (HKLM\Software\Oracle\Homex) called AWE_WINDOW_MEMORY. By default,
this value is 1GB, so if this value is not set in the registry,
AWE_WINDOW_MEMORY will be 1GB. This is set on a per instance basis.
On Feb 1, 2008 1:22 PM, David Grosser <davidg.oraclel@xxxxxxxx> wrote:
Hi, I'm trying to implement ADDRESS WINDOWING EXTENSIONS (AWE) to take
advantage of all of the memory on my server. The server details are: Windows
server 2003 enterprise edition, 4 processors, 8 GB memory, Oracle 10.2.0.1. I
tried to implement awe according to metalink note 225349.1 but my instance is
not coming up. I did the following:
added switches /PAE and /3GB to the boot.ini
removed sga_target from the spfile added USE_INDIRECT_DATA_BUFFERS=TRUE to the
spfile
added DB_BLOCK_BUFFERS to the spfileThe error I get when I start the database
is :ORA-27102: out of memoryOSD-00034: additional error informationO/S-Error:
(OS 8) Not enough storage is available to process this command. I've tried
raising and lowering the memory but nothing works. Has anyone implemented
AWE? If so, how did you get it to work? Thanks,David GrosserDBANSTAR Electric
and Gas
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