Oracle:如何确定是否有待处理的交易? [英] Oracle: How to find out if there is a transaction pending?

问题描述

我正在寻找一种方法来找出当前会话中是否存在未提交的INSERT，UPDATE或DELETE语句.一种方法是使用当前sid检查v $ lock，但这需要对v $ lock的读取访问权限，如果DBA不想授予它，则将是一个问题.还有其他方法(除了跟踪应用程序发出的所有数据库命令之外)?

I'm looking for a way to find out if there are uncommited INSERT, UPDATE or DELETE statements in the current session. One way would be to check v$lock with the current sid, but that requires read access to v$lock, which is be a problem if the DBA doesn't want to grant it. Any other ways (other than keeping track of all database commands issued by the application)?

推荐答案

您可以检查您的会话是否在V$TRANSACTION中有一行(显然，此视图需要读取特权):

you can check if your session has a row in V$TRANSACTION (obviously that requires read privilege on this view):

SQL> SELECT COUNT(*)
       FROM v$transaction t, v$session s, v$mystat m
      WHERE t.ses_addr = s.saddr
        AND s.sid = m.sid
        AND ROWNUM = 1;

  COUNT(*)
----------
         0

SQL> insert into a values (1);

1 row inserted

SQL> SELECT COUNT(*)
       FROM v$transaction t, v$session s, v$mystat m
      WHERE t.ses_addr = s.saddr
        AND s.sid = m.sid
        AND ROWNUM = 1;

  COUNT(*)
----------
         1

SQL> commit;

Commit complete

SQL> SELECT COUNT(*)
       FROM v$transaction t, v$session s, v$mystat m
      WHERE t.ses_addr = s.saddr
        AND s.sid = m.sid
        AND ROWNUM = 1;

  COUNT(*)
----------
         0

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