Oracle-L: RE: Shared Pool Tuneup

From: Hamid Alavi <hamid.alavi_at_quovadx.com>
Date: Tue, 21 May 2002 14:03:52 -0800
Message-ID: <F001.00466C1A.20020521140352@fatcity.com>

Thanks for reply, I run the query for number of execution bigger than 50 and find out few tables in the list, my question is if for example one table executed more than 100 times can we pined the table into memory, so if YES what about all the DML on this table.
Thanks

-----Original Message-----

Sent: Tuesday, May 21, 2002 1:44 PM
To: Multiple recipients of list ORACLE-L

Hamid,

Madhu is right. But comination of execution and load will be more practical .Run following query and see number of executions...

select substr(c.owner,1,5)"OWNER",substr(c.name,1,25)"name",

       round(c.sharable_mem / 1024) K,
       c.loads,
       c.executions,
       c.kept
from v$db_object_cache c,
     sys.obj$ o,
     sys.user$ u

where kept = 'NO'
and u.name = c.owner
and u.user# = o.owner#
and o.name = c.name
-- and o.type in (7, 8, 9)

order by 4,2 desc
/

Once you decide to pin run following through a sql file at the time of startup script for database...(just an extract for your guidance)

EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.DBMS_APPLICATION_INFO');
EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.DBMS_DESCRIBE');
EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.DBMS_LOCK');
EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.DBMS_OUTPUT');
EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.DBMS_STANDARD');
EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.DBMS_UTILITY');
EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.STANDARD');
execute sys.dbms_shared_pool.keep('APPS.FND_DCP');
execute sys.dbms_shared_pool.keep('APPS.CSTPPWMX');
execute sys.dbms_shared_pool.keep('APPS.CSTPUTIL');
execute sys.dbms_shared_pool.keep('APPS.AP_APPROVAL_PKG');
execute sys.dbms_shared_pool.keep('SYS.PSTUBT');

exit;

HTH,
Regards
Rafiq

Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: Tue, 21 May 2002 12:26:53 -0800

Hamid,
what happens , if an object is getting executed once in a while but takes huge sharable memory, we may not be getting full use of pinning it in the shared pool, except wasting the memory, So we need to consider the number of executions also. if the number of executions are high for any object/SQL, its good idea to keep it in shared pool.

--Madhu

-----Original Message-----

Sent: Tuesday, May 21, 2002 2:47 PM
To: Multiple recipients of list ORACLE-L

Hi List,
I have run some scripts for Tune up shared pool,here is the result of one script which i run :
Script:
SELECT name,sharable_mem
FROM v$db_object_cache
WHERE sharable_mem > 10000
AND (TYPE = 'PACKAGE' OR TYPE = 'PACKAGE BODY' OR TYPE = 'FUNCTION' OR
TYPE = 'PROCEDURE')
AND KEPT = 'NO'
ORDER BY 2 DESC here is the result:

NAME				SHARABLE_MEM


-----------------------------		--------------------------

DBMS_JAVA			56373
DBMS_STANDARD		24405
DBMS_UTILITY			24212
DBMS_SPACE_ADMIN		20832
DBMS_UTILITY			20508
DBMS_JAVA			15189
DBMS_OUTPUT		13063
DBMS_APPLICATION_INFO	12461
DBMS_SHARED_POOL		11148
DBMS_SHARED_POOL		10648

Question is, do i have to pin all of these objects in my shared_pool or NOT? Thanks

Hamid Alavi
Office 818 737-0526
Cell 818 402-1987

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MOHAMMAD RAFIQ

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Author: Mohammad Rafiq
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Confidentiality Statement ======================= The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contain information that is PRIVILEGED, CONFIDENTIAL and exempt from disclosure under applicable law. If you have received this message in error, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system. ===================== End Confidentiality Statement =====================

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Author: Hamid Alavi
INET: hamid.alavi_at_quovadx.com

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San Diego, California        -- Public Internet access / Mailing Lists


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