Hot tables

From: Terrian, Tom <tterrian_at_daas.dla.mil>
Date: Thu, 25 Jul 2002 04:48:20 -0800
Message-ID: <F001.004A21B2.20020725044820@fatcity.com>

How is everyone identifying hot tables? In my tool box I have the following two scripts but I am looking for other options. How do you track frequently accessed tables?  

Script #1 - Author unknown:
select obj_name, sum(decode(action_name,'SELECT',1,0)) sel ,sum(decode(action_name,'INSERT',1,0)) inserts,

                            sum(decode(action_name,'UPDATE',1,0)) updates, 
                            sum(decode(action_name,'DELETE',1,0)) deletes 

from dba_audit_trail
having sum(decode(action_name,'SELECT' , 1, 'INSERT',1, 'DELETE',1,'UPDATE',1,0)) > 0
group by obj_name;

Script #2 - Dave Ensor (BMC):
set verify off
col CTYP heading 'Command Type'

col OBJ  format a32 wrap   heading 'Table' 
col EXES format 999,990    heading 'Execs' 
col GETS format 99,999,990 heading 'Buff Gets' 
col ROWP format 99,999,990 heading 'Rows Proc' 

select CTYP 


     , OBJ 

     , 0 - EXEM  EXES 

     , GETS 

     , ROWP 

  from (select distinct EXEM, CTYP, OBJ, GETS, ROWP 
          from ( select decode (S.COMMAND_TYPE 
                                  ,  2, 'Insert into ' 
                                  ,  3, 'Select from ' 
                                  ,  6, 'Update  of  ' 
                                  ,  7, 'Delete from ' 
                                  , 26, 'Lock    of  ') CTYP 
                         , O.OWNER || '.' || O.NAME    OBJ 
                         , sum(0 - S.EXECUTIONS)       EXEM 
                         , sum(S.BUFFER_GETS)          GETS 
                         , sum(S.ROWS_PROCESSED)       ROWP 
                    from V$SQL               S 
                       , V$OBJECT_DEPENDENCY D 
                       , V$DB_OBJECT_CACHE   O 
                   where S.COMMAND_TYPE in (2,3,6,7,26) 
                     and D.FROM_ADDRESS = S.ADDRESS 
                     and D.TO_OWNER     = O.OWNER 
                     and D.TO_NAME      = O.NAME 
                     and O.TYPE         = 'TABLE' 
                group by S.COMMAND_TYPE 
                       , O.OWNER 
                       , O.NAME )  ) 

 where ROWNUM <= &1
/    

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-- 
Author: Terrian, Tom
  INET: tterrian_at_daas.dla.mil

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Received on Thu Jul 25 2002 - 07:48:20 CDT