오라클 AWR 사용하기

 

-- 현재 AWR 설정 확인 (주기, TOPn )

SELECT *
  FROM DBA_HIST_WR_CONTROL
;

-- 각 interval 당 snapshot 확인 
SELECT *
  FROM DBA_HIST_ASH_SNAPSHOT
ORDER BY SNAP_ID DESC
;

-- snapshot 의 sql_id 별 stat 확인 
SELECT *
  FROM DBA_HIST_ACTIVE_SESS_HISTTORY
;
 

 ## 스냅샷 생성 및 삭제 

1. 스냅샷 생성

BEGIN DBNS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT
( [FLUSH_LEVEL => 'FLUSH_LEVEL']);
END;
/


2. 스냅샷 삭제 

BEGIN DBNS_WORKLOAD_REPOSITORY.DROP_SNAPSHOT_RANGE
( LOW_SNAP_ID => snap_id, HIGH_SNAP_ID => snap_id [DBID => dbid]);
END;
/

3. 스냅샷 설정 변경 

BEGIN DBNS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGS
( [RETENTION => retention_time][, INTERVAL => interval_time]
 [, TOPNSQL => topn_sql_number]);
END;
/


4. 베이스라인 설정 

BEGIN DBNS_WORKLOAD_REPOSITORY.CREATE_BASELINE
( START_SNAP_ID => snap_id, END_SNAPID => snap_id,
BASELINE_NAME => 'baseline_name' [,DBID => dbid]
);
END;
/

 
5. 베이스라인 삭제  

BEGIN DBNS_WORKLOAD_REPOSITORY.DROP_BASELINE
( BASELINE_NAME => 'baseline_name' [,CASCADE => true|false][,DBID => dbid]
);
END;
/