oracle 如何查看有沒(méi)有死鎖

--?死鎖查詢(xún)語(yǔ)句

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SELECT????bs.username?"Blocking?User",?bs.username?"DB?User",

ws.username?"Waiting?User",?bs.SID?"SID",?ws.SID?"WSID",

bs.serial#?"Serial#",?bs.sql_address?"address",

bs.sql_hash_value?"Sql?hash",?bs.program?"Blocking?App",

ws.program?"Waiting?App",?bs.machine?"Blocking?Machine",

ws.machine?"Waiting?Machine",?bs.osuser?"Blocking?OS?User",

ws.osuser?"Waiting?OS?User",?bs.serial#?"Serial#",

ws.serial#?"WSerial#",

DECODE?(wk.TYPE,

'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,

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;

查詢(xún)發(fā)生死鎖的select語(yǔ)句

select?sql_text?from?v$sql?where?hash_value?in?(

select?sql_hash_value?from?v$session?where?sid?in?(select?session_id?from?v$locked_object)

)

如何查看oracle數(shù)據(jù)庫(kù)死鎖

1、?用SYS登陸TOAD

2、打開(kāi)菜單Database-Monitor-SessionBrowser

3、查看所有會(huì)話(huà)，是否存在鎖定資源的情況！

4、?如果有死鎖，可以將此會(huì)話(huà)Kill掉！

如何查詢(xún)oracle的死鎖？

下面查詢(xún)可以查到死鎖，但是注意其實(shí)查詢(xún)到的不是真正的死鎖，查詢(xún)到的只是是死鎖發(fā)生前的等待條件，真正的死鎖在10G中會(huì)被系統(tǒng)所阻止掉

select t2.username||' '||t2.sid||' '||t2.serial#||' '||t2.logon_time||' '||t3.sql_text

from v$locked_object t1,v$session t2,v$sqltext t3

where t1.session_id=t2.sid

and t2.sql_address=t3.address

order by t2.logon_time ;

此外，從V$LOCK的BLOCK字段可以看到，BLOCK0表示有等待發(fā)生了，注意是行級(jí)等待，而在表級(jí)沒(méi)有死鎖或等待

select * from v$lock where block0 ;

怎么查看oracle是否有死鎖

-- 死鎖查詢(xún)語(yǔ)句

SELECT bs.username "Blocking User", bs.username "DB User",

ws.username "Waiting User", bs.SID "SID", ws.SID "WSID",

bs.serial# "Serial#", bs.sql_address "address",

bs.sql_hash_value "Sql hash", bs.program "Blocking App",

ws.program "Waiting App", bs.machine "Blocking Machine",

ws.machine "Waiting Machine", bs.osuser "Blocking OS User",

ws.osuser "Waiting OS User", bs.serial# "Serial#",

ws.serial# "WSerial#",

DECODE (wk.TYPE,

'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,

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;

查詢(xún)發(fā)生死鎖的select語(yǔ)句

select sql_text from v$sql where hash_value in (

select sql_hash_value from v$session where sid in (select session_id from v$locked_object)

)

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