ORACLE 当前执行SQL和锁

查询正在执行的sql语句及执行该语句的用户

SELECT B.SID      ORACLEID,
       B.USERNAME 登录ORACLE用户名,
       B.SERIAL#,
       SPID       操作系统ID,
       PADDR,
       SQL_TEXT   正在执行的SQL,
       B.MACHINE  计算机名
  FROM V$PROCESS A, V$SESSION B, V$SQLAREA C
 WHERE A.ADDR = B.PADDR
   AND B.SQL_HASH_VALUE = C.HASH_VALUE;

SELECT OSUSER,
       PROGRAM,
       USERNAME,
       SCHEMANAME,
       B.CPU_TIME,
       STATUS,
       B.SQL_TEXT
  FROM V$SESSION A
  LEFT JOIN V$SQL B
    ON A.SQL_ADDRESS = B.ADDRESS
   AND A.SQL_HASH_VALUE = B.HASH_VALUE
 ORDER BY B.CPU_TIME DESC;

SELECT ADDRESS,
       SQL_TEXT,
       PIECE FROM V$SESSION,
       V$SQLTEXT WHERE ADDRESS = SQL_ADDRESS
       -- and machine = < you machine name > 
       ORDER BY ADDRESS,
       PIECE;

--查看正在执行sql的发起者的发放程序
SELECT OSUSER     电脑登录身份,
       PROGRAM    发起请求的程序,
       USERNAME   登录系统的用户名,
       SCHEMANAME,
       B.CPU_TIME 花费CPU的时间,
       STATUS,
       B.SQL_TEXT 执行的SQL
  FROM V$SESSION A
  LEFT JOIN V$SQL B
    ON A.SQL_ADDRESS = B.ADDRESS
   AND A.SQL_HASH_VALUE = B.HASH_VALUE
 ORDER BY B.CPU_TIME DESC;

查出oracle当前的被锁对象

SELECT L.SESSION_ID      SID,
       S.SERIAL#,
       L.LOCKED_MODE     锁模式,
       L.ORACLE_USERNAME 登录用户,
       L.OS_USER_NAME    登录机器用户名,
       S.MACHINE         机器名,
       S.TERMINAL        终端用户名,
       O.OBJECT_NAME     被锁对象名,
       S.LOGON_TIME      登录数据库时间
  FROM V$LOCKED_OBJECT L, ALL_OBJECTS O, V$SESSION S
 WHERE L.OBJECT_ID = O.OBJECT_ID
   AND L.SESSION_ID = S.SID
 ORDER BY SID, S.SERIAL#;

kill掉当前的锁对象

alter system kill session 'sid,s.serial#';

批量kill掉当前的锁对象

SELECT 'alter system kill session ''' || L.SESSION_ID || ',' || S.SERIAL# ||
       ''';'
  FROM V$LOCKED_OBJECT L, ALL_OBJECTS O, V$SESSION S
 WHERE L.OBJECT_ID = O.OBJECT_ID
   AND L.SESSION_ID = S.SID
 ORDER BY SID, S.SERIAL#;

查找前十条性能差的SQL

SELECT *
  FROM (SELECT PARSING_USER_ID,
               EXECUTIONS,
               SORTS,
               COMMAND_TYPE,
               DISK_READS,
               SQL_TEXT
          FROM V$SQLAREA
         ORDER BY DISK_READS DESC)
 WHERE ROWNUM < 10;

查看占io较大的正在运行的SESSION

SELECT SE.SID,
       SE.SERIAL#,
       PR.SPID,
       SE.USERNAME,
       SE.STATUS,
       SE.TERMINAL,
       SE.PROGRAM,
       SE.MODULE,
       SE.SQL_ADDRESS,
       ST.EVENT,
       ST. P1TEXT,
       SI.PHYSICAL_READS,
       SI.BLOCK_CHANGES
  FROM V$SESSION SE, V$SESSION_WAIT ST, V$SESS_IO SI, V$PROCESS PR
 WHERE ST.SID = SE.SID
   AND ST. SID = SI.SID
   AND SE.PADDR = PR.ADDR
   AND SE.SID > 6
   AND ST. WAIT_TIME = 0
   AND ST.EVENT NOT LIKE '%SQL%'
 ORDER BY PHYSICAL_READS DESC;