ORA-00942: table or view does not exist

1、错误描述

     SQL> select * from v$database;
 
       select * from v$database
 
      ORA-00942: table or view does not exist
 
     SQL> select * from V_$PWFILE_USERS;
 
       select * from V_$PWFILE_USERS
 
      ORA-00942: table or view does not exist

2、错误原因

3、解决办法