如何识别Oracle死锁中涉及的行? [英] How can I identify the rows involved in an Oracle deadlock?
本文介绍了如何识别Oracle死锁中涉及的行?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Oracle检测到死锁时,将写入如下所示的跟踪文件:
When Oracle detects a deadlock, a trace file like this is written:
*** SESSION ID:(56.27081) 2012-05-14 08:16:28.013
DEADLOCK DETECTED ( ORA-00060 )
[Transaction Deadlock]
The following deadlock is not an ORACLE error. It is a
deadlock due to user error in the design of an application
or from issuing incorrect ad-hoc SQL. The following
information may aid in determining the deadlock: Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------
Resource Name process session holds waits process session holds waits
TX-0010002c-002719b5 146 56 X 164 44 X
TX-000f002a-002edd1e 164 44 X 146 56 X
session 56: DID 0001-0092-00050D0D session 44: DID 0001-00A4-0002E3C2
session 44: DID 0001-00A4-0002E3C2 session 56: DID 0001-0092-00050D0D
Rows waited on:
Session 44: obj - rowid = 00035157 - AAA1FXAAxAAASfLAAn
(dictionary objn - 217431, file - 49, block - 75723, slot - 39)
Session 56: obj - rowid = 00035157 - AAA1FXAAsAACjuiAAP
(dictionary objn - 217431, file - 44, block - 670626, slot - 15)
如何根据上述信息确定所涉及的行,以帮助调试应用程序?
How can I determine the rows involved based on the information above in order to assist in debugging the application?
推荐答案
我找到了答案:
-
dictionary objn
之后的数字可用于从DBA_object中选择.
The number after
dictionary objn
can be used to select out of DBA_objects.
SELECT owner, object_name, object_type
FROM dba_objects
WHERE object_id = 217431;
一旦识别了表,就可以使用rowid找到该行:
Once the table is identified, the row can be found using the rowid:
SELECT *
FROM table_found_above
WHERE rowid = 'AAA1FXAAxAAASfLAAn';
如果跟踪文件说没有等待的行",则此技术将不起作用.该问题可能是由于未索引的外键造成的.
If the trace file says that there are no "Rows waited on" this technique will not work. The problem may be due to an unindexed foreign key.
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