必须声明标识符 'DBMS_SYSTEM.SET_EV'

     在用10046事件trace其他会话时，报错

SQL> exec dbms_system.set_ev(148,46,10046,12,'');

BEGIN dbms_system.set_ev(148,46,10046,12,''); END;

      *

第 1 行出现错误:

ORA-06550: 第 1 行, 第 7 列:

PLS-00201: 必须声明标识符 'DBMS_SYSTEM.SET_EV'

ORA-06550: 第 1 行, 第 7 列:

PL/SQL: Statement ignored。

      我记得刚才明明是授权过，如下：

C:\Documents and Settings\gg>sqlplus sys/oracle as sysdba;

SQL*Plus: Release 10.2.0.1.0 - Production on 星期一 6月 24 22:01:01 2013

Copyright (c) 1982, 2005, Oracle.  All rights reserved.
连接到:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options
SQL> grant execute on dbms_system to test;
授权成功。

       解决方案：

C:\Documents and Settings\gg>sqlplus test/test

SQL*Plus: Release 10.2.0.1.0 - Production on 星期一 6月 24 21:57:45 2013

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

连接到:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options

SQL> CREATE SYNONYM DBMS_SYSTEM FOR SYS.DBMS_SYSTEM--做如下操作即可