[大数据]Oracle DBUA升级时分布式事务锁问题处理

数据库在DBUA升级时，若存在分布式事务锁，升级过程无法继续进行。

处理方法：

[oracle@ydhl ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Sat Nov 27 00:30:55 2021

Copyright (c) 1982, 2014, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> select local_tran_id,state from dba_2pc_pending;

LOCAL_TRAN_ID          STATE
---------------------- ----------------
8.31.2898381           committed
40.17.120795           committed
41.5.136055            committed

SQL> alter session set container=ydhl;

Session altered.

SQL> select local_tran_id,state from dba_2pc_pending;

LOCAL_TRAN_ID          STATE
---------------------- ----------------
265.23.1508662         collecting
18.13.7765760          collecting

SQL> execute DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('8.31.2898381');

PL/SQL procedure successfully completed.

SQL> execute DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('40.17.120795');

PL/SQL procedure successfully completed.

SQL> execute DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('41.5.136055');

PL/SQL procedure successfully completed.

SQL> execute DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('265.23.1508662');

PL/SQL procedure successfully completed.

SQL> execute DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('18.13.7765760');

PL/SQL procedure successfully completed.

SQL> select local_tran_id,state from dba_2pc_pending;

no rows selected