监控oracle等待事件

-- Session总体等待
SELECT a.SID,
a.USERNAME,
a.MACHINE,
a.TERMINAL,
b.EVENT,
b.TOTAL_WAITS,
b.TOTAL_TIMEOUTS
FROM v$session a, V$SESSION_EVENT b
WHERE a.SID = b.SID
AND a.STATUS = 'ACTIVE'
AND user# > 0;

-- Session当前等待
SELECT a.SID,
a.SERIAL#,
a.USERNAME,
a.MACHINE,
a.TERMINAL,
b.EVENT,
b.WAIT_TIME,
b.SECONDS_IN_WAIT,
b.STATE
FROM v$session a, V$SESSION_wait b
WHERE a.SID = b.SID
AND a.STATUS = 'ACTIVE'
AND user# > 0;

-- Session当前正在执行语句
SELECT a.SID,
a.SERIAL#,
a.USERNAME,
a.MACHINE,
a.TERMINAL,
b.PIECE,
b.SQL_TEXT
FROM v$session a, v$sqltext b
WHERE b.ADDRESS =
DECODE(a.SQL_HASH_VALUE, 0, a.PREV_SQL_ADDR, a.SQL_ADDRESS)
AND a.STATUS = 'ACTIVE'
AND user# > 0
ORDER BY a.SQL_ADDRESS, b.PIECE;

-- Session当前等待
SELECT a.SID, a.USERNAME, a.MACHINE, a.TERMINAL, c.NAME, b.VALUE
FROM v$session a, V$sesstat b, v$statname c
WHERE a.SID = b.SID
AND b.STATISTIC# = c.STATISTIC#
AND a.STATUS = 'ACTIVE'
AND user# > 0
AND b.VALUE > 0;