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Diving Into the Shared Pool - An In Depth Look at Tuning the Shared Pool (Part 2)

Oracle Tips by Mike Ault

What to Pin

rem
rem FUNCTION: Report Stored Object Statistics
rem
column owner             format a11         heading Schema
column name             format a30         heading Object|Name
column namespace                           heading Name|Space
column type                               heading Object|Type
column kept             format a4          heading Kept
column sharable_mem       format 999,999       heading
Shared|Memory
column executions       format 999,999       heading Executes
set lines 132 pages 47 feedback off
@title132 'Oracle Objects Report'
break on owner on namespace on type
spool rep_out/&db/o_stat
select 
      OWNER,
      NAMESPACE,
      TYPE,
      NAME,
      SHARABLE_MEM,
      LOADS, 
      EXECUTIONS,  
      LOCKS,   
      PINS,
      KEPT
from
      v$db_object_cache
SEE CODE DEPOT FOR FULL SCRIPTS


      and executions>0 and loads>1 and kept='NO'
order by owner,namespace,type,executions desc;
spool off
set lines 80 pages 22 feedback on
clear columns
clear breaks
ttitle off

Figure 2: Script to Show Objects Which Should Be Kept

SEE CODE DEPOT FOR FULL SCRIPTS


For more information on this topic, I recommend Don Burleson's latest book "Oracle Tuning: The Definitive Reference". 

You can buy it direct from the publisher for 50%-off and get instant access to the code depot of Oracle tuning scripts:

http://www.rampant-books.com/book_1002_oracle_tuning_definitive_reference_2nd_ed.htm


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