22、listener的幾個錯誤程式碼

listener的幾個錯誤程式碼[@more@]

1、ORA-12514 TNS：listener does not currently know of service requested in connectdescriptor.

This indicate:

The database service is not dynamically registered with the listener.OR,The database service name is not configured in the listener.ora file

2、ORA-12541:TNS:no listener

The listener is not running on the database specified in the connect descriptor .

3、ORA-03113:TNS:end-of-file on communication channel

The database is not open .

4 、ORA-12154：TNS:could not resolve the connect identifier specified.

The connect identifier supplied does not exist in the tnsnames.ora file