要查询短时间内的可以从v$sql 或者是v$sqlarea 如果要查询一周或者一个月内 那么有可能在V$SQLAREA里找不到!下面是通过历史DBA_HIST_SQLSTAT里获得, 这个是通过快照方式保留下来的.
--执行时间最长的
WITH BASTABLE AS
(
SELECT DBMS_LOB.SUBSTR(SQL_TEXT,4000, 1 ) AS SQL_FULL_TEXT,
DHST.SQL_ID,
ROUND (X.ELAPSED_TIME / 1000000 / X.EXECUTIONS_DELTA, 3) AVG_ELAPSED_TIME_SEC,
ROUND (X.CPU_TIME / 1000000 / X.EXECUTIONS_DELTA, 3) AVG_CPU_TIME_SEC,
ROUND (X.BUFFER_GETS_DELTA / X.EXECUTIONS_DELTA, 3) AVG_BUFFER_GETS,
ROUND (X.PARSE_CALLS_DELTA/X.EXECUTIONS_DELTA*100, 3) EXEC_PARSE_RATE,
ROUND (X.PHYSICAL_READ_BYTES_DELTA/1024/X.EXECUTIONS_DELTA, 3) AVG_PHYSICAL_READ_KB,
ROUND (X.DISK_READS_DELTA / X.EXECUTIONS_DELTA, 3) AVG_DISK_READS,
EXECUTIONS_DELTA AS EXEC_TOTAL_NUM,DHST.COMMAND_TYPE,N.COMMAND_NAME
FROM DBA_HIST_SQLTEXT DHST, DBA_HIST_SQLCOMMAND_NAME N,
(
SELECT DHSS.SQL_ID SQL_ID,
SUM (DHSS.CPU_TIME_DELTA) CPU_TIME,
SUM (DHSS.ELAPSED_TIME_DELTA) ELAPSED_TIME,
CASE SUM (DHSS.EXECUTIONS_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.EXECUTIONS_DELTA) END AS EXECUTIONS_DELTA,
CASE SUM (DHSS.SORTS_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.SORTS_DELTA) END AS SORTS_DELTA,
CASE SUM (DHSS.FETCHES_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.FETCHES_DELTA) END AS FETCHES_DELTA,
CASE SUM (DHSS.PARSE_CALLS_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.PARSE_CALLS_DELTA) END AS PARSE_CALLS_DELTA,
CASE SUM (DHSS.DISK_READS_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.DISK_READS_DELTA) END AS DISK_READS_DELTA,
CASE SUM (DHSS.BUFFER_GETS_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.BUFFER_GETS_DELTA) END AS BUFFER_GETS_DELTA,
CASE SUM (DHSS.IOWAIT_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.IOWAIT_DELTA) END AS IOWAIT_DELTA,
CASE SUM (DHSS.PHYSICAL_READ_BYTES_DELTA) WHEN 0 THEN 1 ELSE SUM (DHSS.PHYSICAL_READ_BYTES_DELTA) END AS PHYSICAL_READ_BYTES_DELTA
FROM DBA_HIST_SQLSTAT DHSS
WHERE DHSS.SNAP_ID IN
(SELECT SNAP_ID
FROM DBA_HIST_SNAPSHOT
WHERE BEGIN_INTERVAL_TIME >= TRUNC(SYSDATE)-30
AND END_INTERVAL_TIME <TRUNC(SYSDATE)-0
)
AND DHSS.PARSING_SCHEMA_NAME =UPPER(‘SHARK‘)
GROUP BY DHSS.SQL_ID
) X
WHERE X.SQL_ID = DHST.SQL_ID
AND DHST.COMMAND_TYPE = N.COMMAND_TYPE
)
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, AVG_DISK_READS AS VALUE_S, ‘AVG_DISK_READS‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY AVG_DISK_READS DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, AVG_ELAPSED_TIME_SEC AS VALUE_S, ‘AVG_ELAPSED_TIME_SEC‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY AVG_ELAPSED_TIME_SEC DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, AVG_CPU_TIME_SEC AS VALUE_S, ‘AVG_CPU_TIME_SEC‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY AVG_CPU_TIME_SEC DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, AVG_BUFFER_GETS AS VALUE_S, ‘AVG_BUFFER_GETS‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY AVG_BUFFER_GETS DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, EXEC_PARSE_RATE AS VALUE_S, ‘EXEC_PARSE_RATE‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY EXEC_PARSE_RATE DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, AVG_PHYSICAL_READ_KB AS VALUE_S, ‘AVG_PHYSICAL_READ_KB‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 ORDER BY AVG_PHYSICAL_READ_KB DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, EXEC_TOTAL_NUM AS VALUE_S, ‘EXEC_TOTAL_NUM‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE<>47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY EXEC_TOTAL_NUM DESC ) WHERE ROWNUM <=5
UNION ALL
SELECT * FROM
(
SELECT SQL_FULL_TEXT,SQL_ID,EXEC_TOTAL_NUM, AVG_ELAPSED_TIME_SEC AS VALUE_S, ‘PROCEDURES_EXEC_TIME‘ AS VALUES_TYPE
FROM BASTABLE WHERE COMMAND_TYPE=47 AND SQL_FULL_TEXT NOT LIKE ‘/* SQL A%‘ ORDER BY AVG_ELAPSED_TIME_SEC DESC ) WHERE ROWNUM <=5;