1.查询会话等待事件及对应的sql
SELECT P.PID,
S.SID,
S.SERIAL#,
S.USERNAME,
Q.SQL_ID,
Q.SQL_TEXT,
Q.SQL_FULLTEXT,
E.EVENT,
E.TOTAL_WAITS,
E.TIME_WAITED,
E.AVERAGE_WAIT
FROM V$SESSION S, V$SESSION_EVENT E, V$SQLAREA Q, V$PROCESS P
WHERE S.SID = E.SID
AND S.SQL_ID = Q.SQL_ID
AND P.ADDR = S.PADDR
AND E.EVENT NOT LIKE 'SQL*Net%'
AND S.STATUS = 'ACTIVE'
AND S.USERNAME IS NOT NULL;
2.查询长时间运行的会话与对应的sql
SELECT S.SID,
OPNAME,
TRUNC(L.SOFAR / L.TOTALWORK * 100, 2) || '%' AS PCT_WORK,
L.ELAPSED_SECONDS ELAPSED,
ROUND(L.ELAPSED_SECONDS * (L.TOTALWORK - L.SOFAR) / L.SOFAR) REMAIN_TIME,
Q.SQL_TEXT
FROM V$SESSION_LONGOPS L, V$SQLAREA Q, V$SESSION S
WHERE L.SQL_HASH_VALUE = Q.HASH_VALUE
AND L.SID = S.SID
--AND L.SOFAR != L.TOTALWORK
AND L.ELAPSED_SECONDS>6
ORDER BY L.START_TIME
3.查询会话及锁与对应的sql
SELECT A.OWNER 方案名,
A.OBJECT_NAME 表名,
B.XIDUSN 回滚段号,
B.XIDSLOT 槽号,
B.XIDSQN 序列号,
B.SESSION_ID 锁表SESSION_ID,
B.ORACLE_USERNAME 锁表用户名,
DECODE(D.TYPE,
'XR',
'NULL',
'RS',
'SS(Row-S)',
'CF',
'SS(Row-S)',
'TM',
'TABLE LOCK',
'PW',
'TABLE LOCK',
'TO',
'TABLE LOCK',
'TS',
'TABLE LOCK',
'RT',
'ROW LOCK',
'TX',
'ROW LOCK',
'MR',
'S(Share)',
NULL) 锁定方式,
C.MACHINE 用户组,
C.TERMINAL 机器名,
B.OS_USER_NAME 系统用户名,
B.PROCESS 系统进程ID,
DECODE(C.STATUS, 'INACTIVE', '不活动', 'ACTIVE', '活动') 活动情况,
C.SERVER,
C.SID,
E.SQL_TEXT,
C.SERIAL#,
C.PROGRAM 连接方式,
C.LOGON_TIME
FROM ALL_OBJECTS A,
V$LOCKED_OBJECT B,
SYS.GV_$SESSION C,
V$LOCK D,
V$SQLTEXT E
WHERE (A.OBJECT_ID = B.OBJECT_ID)
AND (B.PROCESS = C.PROCESS)
AND C.SID = D.SID
AND B.LOCKED_MODE = D.LMODE
AND C.SQL_ID = E.SQL_ID(+)
ORDER BY 1, 2;
4.查询被阻塞会话与被阻塞会话的对应sql
SELECT S1.USERNAME "WAITING USER",
S1.OSUSER "OS User" ,
S1.LOGON_TIME "logon time",
W.SESSION_ID "Sid",
P1.SPID "PID",
Q1.SQL_TEXT "SQLTEXT",
S2.USERNAME "HOLDING User",
S2.OSUSER "OS User"
,
S2.LOGON_TIME "logon time",
H.SESSION_ID "Sid",
P2.SPID "PID",
Q2.SQL_TEXT "SQLTEXT"
FROM SYS.V_$PROCESS P1,
SYS.V_$PROCESS P2,
SYS.V_$SESSION S1,
SYS.V_$SESSION S2,
DBA_LOCKS W,
DBA_LOCKS H,
V$SQL Q1,
V$SQL Q2
WHERE H.MODE_HELD != 'None'
AND H.MODE_HELD != 'Null'
AND W.MODE_REQUESTED != 'None'
AND W.LOCK_TYPE(+) = H.LOCK_TYPE
AND W.LOCK_ID1(+) = H.LOCK_ID1
AND W.LOCK_ID2(+) = H.LOCK_ID2
AND W.SESSION_ID = S1.SID(+)
AND H.SESSION_ID = S2.SID(+)
AND S1.PADDR = P1.ADDR(+)
AND S2.PADDR = P2.ADDR(+)
AND S1.SQL_ID = Q1.SQL_ID(+)
AND S2.SQL_ID = Q2.SQL_ID(+)
ORDER BY H.SESSION_ID;
5. 30分鐘內執行時間最長的語句
select ash.USER_ID,u.username,sum(ash.WAIT_TIME) ttl_wait_time,s.SQL_TEXT
from v$active_session_history ash, v$sqlarea s, dba_users u
where ash.SAMPLE_TIME between sysdate - 30/24/60 and sysdate
and ash.SQL_ID = s.SQL_ID
and ash.USER_ID = u.user_id
group by ash.USER_ID, s.SQL_TEXT, u.username
order by ttl_wait_time desc
