Oracle AWRËÙ²é
SQL> SQLPLUS / AS SYSDBA
SQL> exec dbms_workload_repository.create_snapshot
SQL> exec:snap_id:=dbms_workload_repository.create_snapshot
SQL> var snap_id number
SQL> print snap_id
SQL> @?/rdbms/admin/awrrpt.sql
OracleAWRËÙ²é
1.²é¿´µ±Ç°µÄAWR±£´æ²ßÂÔ
select * from dba_hist_wr_control;
DBID,SNAP_INTERVAL,RETENTION,TOPNSQL
860524039,+00 01:00:00.000000,+07 00:00:00.000000,DEFAULT
ÒÔÉϽá¹û±íʾ,ÿСʱ²úÉúÒ»¸öSNAPSHOT£¬±£Áô7Ìì
2.µ÷ÕûAWRÅäÖÃ
AWRÅäÖö¼ÊÇͨ¹ýdbms_workload_repository°ü½øÐÐÅäÖÃ
2.1µ÷ÕûAWR²úÉúsnapshotµÄƵÂʺͱ£Áô²ßÂÔ£¬È磺È罫ÊÕ¼¯¼ä¸ôʱ¼ä¸ÄΪ30 ·ÖÖÓÒ»´Î¡£²¢ÇÒ±£Áô5Ììʱ¼ä£¨×¢£ºµ¥Î»¶¼ÊÇΪ·ÖÖÓ£©£º
exec dbms_workload_repository.modify_snapshot_settings(interval=>30, retention=>5*24*60);
2.2¹Ø±ÕAWR,°ÑintervalÉèΪ0Ôò¹Ø±Õ×Ô¶¯²¶×½¿ìÕÕ
exec dbms_workload_repository.modify_snapshot_settings(interval=>0, retention=>5*24*60);
2.3ÊÖ¹¤´´½¨Ò»¸ö¿ìÕÕ
exec DBMS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT ();
2.4 ²é¿´¿ìÕÕ
select * from sys.wrh$_active_session_history
2.5ÊÖ¹¤É¾³ýÖ¸¶¨·¶Î§µÄ¿ìÕÕ
exec WORKLOAD_REPOSITORY.DROP_SNAPSHOT_RANGE(low_snap_id => 22, high_snap_id => 32, dbid => 3310949047);
2.6´´½¨baseline
exec dbms_workload_repository.create_baseline (56,59,'apply_interest_1')
2.7ɾ³ýbaseline
exec DBMS_WORKLOAD_REPOSITORY.DROP_BASELINE(baseline_name => ' apply_interest_1', cascade => FALSE);
3.Éú²úAWR±¨¸æ
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