http://blog.csdn.net/tclcaojun/article/details/6777022错误代码:ORA-01591

错误原因:使用了分布式事务，造成这个问题的原因很多时候都是由于网络问题造成的

解决办法:

1.找到TRAN_ID
Select ‘Rollback force ‘‘‘||LOCAL_TRAN_ID||‘‘‘‘ from sys.pending_trans$;

2.將其COMMIT或ROLLBACK:   
rollback force LOCAL_TRAN_ID;   
commit force LOCAL_TRAN_ID;  

3.如果执行失败,则强行从资料字典中删除该交易记录: 
set transaction use rollback segment system;    
delete from dba_2pc_pending where local_tran_id = LOCAL_TRAN_ID;    
delete from pending_sessions$ where local_tran_id = LOCAL_TRAN_ID;    
delete from pending_sub_sessions$ where local_tran_id = LOCAL_TRAN_ID;    
commit;

4.执行失败,还一种情况可以尝试下重起一下Oracle服务,这种情况我遇到过一次，重新启动后该锁自动解除（因为对删除数据字典比较担心,所以胡乱试了一次重启数据库,前提是执行了commit force LOCAL_TRAN_ID;失败之后重新启动）

5.生成语句操作语句的程序

begin  
  for r in (select local_tran_id   
              from dba_2pc_pending t   
             where t.state = ‘collecting‘) loop   
    --dbms_output.put_line(‘commit force ‘‘‘||r.local_tran_id||‘‘‘;‘);   
    dbms_output.put_line(‘delete from dba_2pc_pending where local_tran_id = ‘‘‘||r.local_tran_id||‘‘‘;‘);   
    dbms_output.put_line(‘delete from pending_sessions$ where local_tran_id = ‘‘‘||r.local_tran_id||‘‘‘;‘);   
    dbms_output.put_line(‘delete from pending_sub_sessions$ where local_tran_id = ‘‘‘||r.local_tran_id||‘‘‘;‘);   
  end loop;   
  dbms_output.put_line(‘commit;‘);   
end;

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本文原标题：ORA-01591错误的原因和处理方法