BY FWYANG
SID, OPNAME,
ROUND(SOFAR * 100 / TOTALWORK, 0) || '%' AS PROGRESS, TIME_REMAINING, SQL_TEXT
FROM V$SESSION_LONGOPS, V$SQL WHERE TIME_REMAINING <> 0 AND SQL_ADDRESS = ADDRESS
AND SQL_HASH_VALUE = HASH_VALUE;
等待时间最多的5个系统等待事件的获取
SELECT *
FROM (SELECT *
FROM V$SYSTEM_EVENT
WHERE EVENT NOT LIKE 'SQL%' ORDER BY TOTAL_WAITS DESC) WHERE ROWNUM <= 5;
查找前十条性能差的SQL
SELECT *
FROM (SELECT PARSING_USER_ID EXECUTIONS, SORTS,
COMMAND_TYPE, DISK_READS, SQL_TEXT FROM V$SQLAREA
ORDER BY DISK_READS DESC) WHERE ROWNUM < 10;
检查死锁
SELECT bs.username \, bs.username \,
ws.username \, bs.SID \, ws.SID \, bs.serial# \, bs.sql_address \,
bs.sql_hash_value \, bs.program \, ws.program \, bs.machine \, ws.machine \, bs.osuser \, ws.osuser \, bs.serial# \, ws.serial# \, DECODE (wk.TYPE,
6
BY FWYANG
'MR', 'Media Recovery', 'RT', 'Redo Thread', 'UN', 'USER Name', 'TX', 'Transaction', 'TM', 'DML',
'UL', 'PL/SQL USER LOCK', 'DX', 'Distributed Xaction', 'CF', 'Control FILE', 'IS', 'Instance State', 'FS', 'FILE SET',
'IR', 'Instance Recovery',
'ST', 'Disk SPACE Transaction', 'TS', 'Temp Segment',
'IV', 'Library Cache Invalidation', 'LS', 'LOG START OR Switch', 'RW', 'ROW Wait',
'SQ', 'Sequence Number', 'TE', 'Extend TABLE', 'TT', 'Temp TABLE', wk.TYPE ) lock_type, DECODE (hk.lmode, 0, 'None', 1, 'NULL',
2, 'ROW-S (SS)', 3, 'ROW-X (SX)', 4, 'SHARE',
5, 'S/ROW-X (SSX)', 6, 'EXCLUSIVE', TO_CHAR (hk.lmode) ) mode_held, DECODE (wk.request, 0, 'None', 1, 'NULL',
2, 'ROW-S (SS)', 3, 'ROW-X (SX)', 4, 'SHARE',
5, 'S/ROW-X (SSX)', 6, 'EXCLUSIVE',
TO_CHAR (wk.request) ) mode_requested,
TO_CHAR (hk.id1) lock_id1, TO_CHAR (hk.id2) lock_id2, DECODE
(hk.BLOCK,
7
BY FWYANG
0, 'NOT Blocking', /**//* Not blocking any other processes */
1, 'Blocking', /**//* This lock blocks other processes */ 2, 'Global', /**//* This lock is global, so we can't tell */
TO_CHAR (hk.BLOCK) ) blocking_others
FROM v$lock hk, v$session bs, v$lock wk, v$session ws WHERE hk.BLOCK = 1 AND hk.lmode != 0 AND hk.lmode != 1 AND wk.request != 0
AND wk.TYPE(+) = hk.TYPE AND wk.id1(+) = hk.id1 AND wk.id2(+) = hk.id2 AND hk.SID = bs.SID(+) AND wk.SID = ws.SID(+)
AND (bs.username IS NOT NULL) AND (bs.username <> 'SYSTEM') AND (bs.username <> 'SYS') ORDER BY 1;
查看正在运行的JOB
SELECT * FROM DBA_JOBS_RUNNING;
检查数据库JOB的完成情况
SELECT JOB, LOG_USER, LAST_DATE, NEXT_DATE, WHAT, FAILURES FROM DBA_JOBS;
查看正在运行的JOB对应的SID、SERIAL#、SPID
SELECT A.JOB, B.SID, B.SERIAL#, C.SPID
FROM DBA_JOBS_RUNNING A, V$SESSION B, V$PROCESS C WHERE A.SID = B.SID AND B.PADDR = C.ADDR AND JOB = '21';
8
BY FWYANG
通过SID查询SERIAL#、SPID
SELECT B.SID, B.SERIAL#, C.SPID FROM V$SESSION B, V$PROCESS C WHERE B.SID = '554' AND B.PADDR = C.ADDR;
停止会话
--SID:554 SERIAL#:1134 SPID:23242
ORACLE级别
ALTER SYSTEM KILL SESSION '554,1134'; 操作系统级别 kill -9 23242
9
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