• 获取数据库30天内各个指标的TOP语句


    要查询短时间内的能够从v$sql 或者是v$sqlarea 假设要查询一周或者一个月内 那么有可能在V$SQLAREA里找不到!以下是通过历史DBA_HIST_SQLSTAT里获得, 这个是通过快照方式保留下来的.


    --运行时间最长的
    
    
    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;


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  • 原文地址:https://www.cnblogs.com/wgwyanfs/p/7146457.html
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