Author: Admin

column name format a60 column created format a25 select name, to_char(creation_time, ‘DD-MON-RRRR:HH24:MI’) created from v$datafile_header order by creation_time /

Find hash value & time when this plan was taken for particular sql id. Filename : fphv.sql REM *** Find Plan Hash value column plan_hash_value format 999999999999 accept v_sqlid prompt ‘Enter SQL_ID : ‘ select distinct sql_id, plan_hash_value, to_char(timestamp, ‘DD-MON-RRRR:HH24:MI:SS’) from dba_hist_sql_plan where sql_id=’&v_sqlid’; Then, Apply sql id and plan_hash_value for a unique plan. REM…

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set lines 120 pages 200 column event format a30 column object_type format a14 column object_name format a30 column owner format a10 column sql_text format a120 spool currwaitobj accept event_name prompt ‘Enter fraction of event to trace : ‘ accept start_time1 prompt ‘Start Time in (DD-MON-RRRR:HH24:MI format) : ‘ accept stop_time1 prompt ‘Stop Time in (DD-MON-RRRR:HH24:MI…

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REM fplan.sql REM Find execution plan from dba_hist_sql_plan for a specific SQL_ID and PLAN_HASH_VALUE. column plan_hash_value format 999999999999 accept v_sqlid prompt ‘Enter SQL_ID : ‘ accept v_plan_hash_value prompt ‘Enter PLAN Hash Value : ‘ SELECT LPAD(‘ ‘,2*(LEVEL-1))||operation||’ ‘||options ||’ ‘||object_name ||’ ‘|| DECODE(id, 0, ‘Cost = ‘||position) “Query Plan” FROM dba_hist_sql_plan START WITH id =…

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Filename : fphv.sql REM *** Find Plan Hash value column plan_hash_value format 999999999999 accept v_sqlid prompt ‘Enter SQL_ID : ‘ select distinct sql_id, plan_hash_value, to_char(timestamp, ‘DD-MON-RRRR:HH24:MI:SS’) from dba_hist_sql_plan where sql_id=’&v_sqlid’;

set lines 120 pages 200 select status, count(1) from v$shared_server group by status; select * from v$shared_server_monitor; select dispatcher, count(1) from v$circuit group by dispatcher; select * from v$sgastat where name like ‘%free memory%’;

column osuser format a10 column username format a30 column machine format a30 column program format a40 column sid format 99999999 column serial# format 99999999 column TOT format 999999 heading “Total Sessions” break on report compute sum of TOT on report set lines 141 set pages 500 select machine, osuser, username, count(1) “TOT” from v$session group…

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set lines 120 pages 200 column event format a30 column object_type format a14 column object_name format a30 column owner format a10 column sql_text format a120 accept event_name prompt ‘Enter fraction of event to trace : ‘ select distinct a.event, s.sql_id, s.sql_text, s.executions from v$session a, v$sqlarea s where s.sql_id = a.sql_id and lower(a.event) like lower(‘%&event_name%’)…

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######### # _kks_use_mutex_pin # # Enables use of more efficient mutex mechanism for # implementing library cache pins. # ######### _kks_use_mutex_pin=TRUE Apparently, Oracle is migrating some of its serialization protection from latches to mutexes. For example, the structures previously protected by the Library Cache Pin latch are now protected by a mutex and evidenced by…

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