当Oracle检测到死锁时,会写入如下跟踪文件：
*** 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？
我找到了答案：
原文链接：https://www.f2er.com/oracle/204858.html>字典objn之后的数字可用于从DBA_objects中选择.
SELECT owner,object_name,object_type FROM dba_objects WHERE object_id = 217431;
>识别完表后,可以使用rowid找到该行：
SELECT * FROM table_found_above WHERE rowid = 'AAA1FXAAxAAASfLAAn';
如果跟踪文件说没有“Rows等待”,这种技术将无效.问题可能是由于未编制索引的外键.
