Dynamic Performance Tables not accessible解决方法

PLSQL问题： Dynamic Performance Tables not accessible , Automatic Statistics Disabled for this session You can disable statistics in the preference menu,or obtanin select priviliges on the v$session,v$sesstat and v$statname tables 根本原因

PLSQL问题：Dynamic Performance Tables not accessible, 
Automatic Statistics Disabled for this session 

You can disable statistics in the preference menu,or obtanin select 

priviliges on the v$session,v$sesstat and v$statname tables

 根本原因是该用户对字典表没有权限

方法一： Tools->Preferences->Options里 把Automatic Statistics前的那个勾子去掉，保存就可以了

方法二：grant 权限 to username