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做监控用的 SQL 局部,整顿到一列输入次要内容,不喜爱就本人拆开用,或增加其余须要应用的列信息。
解析:
1、只输入有阻塞者跟被阻塞者,并且阻塞工夫 >=60s 局部;
2、chr(10) 换行输入,sqlplus 命令行中可见成果,PLSQL Dev 外面没啥用;
3、思考执行效率,不查找 SQL_TEXT,只抓 SQL_ID,Prev_SQL_ID,基于此辅助定位程序问题点;
4、最初生成查找锁住数据的语句。
SELECT 'Blocker_SID:' || A.SID || ',' || A_S.SCHEMANAME || ', From:' ||
A_S.MACHINE || ',' || A_S.PROGRAM || ', Cur_SQL:' || A_S.SQL_ID ||
',Prev_SQL:' || A_S.PREV_SQL_ID || ', Status:' || A_S.STATUS ||
', Lock_Time:' || A.CTIME || 's.' || CHR(10) || '-> Locked_SID:' ||
B.SID || ', Blocked_SQL:' || B_S.SQL_ID || ', Locked_ON:' ||
OBJ.OWNER || '.' || OBJ.OBJECT_NAME || ', Lock_Mode:' ||
DECODE(A.LMODE,
0,
'0,none',
1,
'1,NULL',
2,
'2,row-S(SS)',
3,
'3,row-X(SX)',
4,
'4,share(S)',
5,
'5,S/Row-X(SSX)',
6,
'6,exclusive(X)') || CHR(10) || '-> Locked_data_query_SQL:' ||
(DECODE(OBJ.OBJECT_TYPE,
'TABLE',
'SELECT * FROM' || OBJ.OWNER || '.' || OBJ.OBJECT_NAME ||
'WHERE ROWID =''' ||
DBMS_ROWID.ROWID_CREATE(1,
OBJ.DATA_OBJECT_ID,
B_S.ROW_WAIT_FILE#,
B_S.ROW_WAIT_BLOCK#,
B_S.ROW_WAIT_ROW#) || ''';',
NULL)) AS BLOCK_DETAIL
FROM GV$LOCK A,
GV$LOCK B,
GV$SESSION A_S,
GV$SESSION B_S,
DBA_OBJECTS OBJ
WHERE A.ID1 = B.ID1
AND A.ID2 = B.ID2
AND A.CTIME >= 60
AND A.BLOCK > 0
AND B.REQUEST > 0
AND A.SID = A_S.SID
AND A.INST_ID = A_S.INST_ID
AND B.SID = B_S.SID
AND B.INST_ID = B_S.INST_ID
AND B_S.ROW_WAIT_OBJ# = OBJ.OBJECT_ID(+)
ORDER BY A.INST_ID, A.SID;
附基于 SQL_ID 查找 SQL_TEXT 语句:
SELECT Q.SQL_ID, Q.SQL_TEXT, Q.SQL_FULLTEXT
FROM V$SQL Q
WHERE Q.SQL_ID = '&SQL_ID';
-- 执行后,将变量 SQL_ID 录入下面提取的 SQL_ID 即可
正文完