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RE: Shared Pool Tuneup

From: Mohammad Rafiq <rafiq9857_at_hotmail.com>
Date: Tue, 21 May 2002 15:07:20 -0800
Message-ID: <F001.00466D15.20020521150720@fatcity.com> 





Here we are talking about objects other than tables like package, package 
body and procedures etc which are pinned through shared pool package.



To start with you can make candidates such objects which are executed around 
100 times and are also loaded frequently. This is a continous process to 
monitor and keep pinning such objects. Pinning through a sql file is more 
practical as you can remove/add  those objects from your sql files and it 
will run and pinned whenever you bounce your database.



I hope it clarifies....




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 14:03:52 -0800



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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Author: Hamid Alavi


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Author: Mohammad Rafiq


   INET: rafiq9857_at_hotmail.com


Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists


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Author: Hamid Alavi


   INET: hamid.alavi_at_quovadx.com


Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Author: Mohammad Rafiq


  INET: rafiq9857_at_hotmail.com


Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists


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Received on Tue May 21 2002 - 18:07:20 CDT












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