unable to connect to oracle xe

happycheers · #1 (**permalink**) 10-10-08, 21:38

sir,
i had installed the oracle xe.When i had entered the username as system and password as that i had given during the registration it's showing invalid login credentials .I could'nt understand why could this happen?I had unistalled and reinstalled the application and repeated the above process again;yet the same problem occured.please help

beilstwh · #2 (**permalink**) 10-13-08, 09:29

check services. Is the database and listener started? Does your tnsnames have an entry for the XE database?

flyboy · #3 (**permalink**) 10-13-08, 09:51

> i had installed the oracle xe.
OK.

> When i had entered the username as system and password as that i had given during the registration
Where? In SQL*Plus, Enterprise Manager, some other Web page, ...?

> it's showing invalid login credentials .
Exactly? Oracle errors are often accompanied with ORA-##### (5 digits) code, which uniquely describes them. With this vague description, it is hard to locate the error cause.

> I had unistalled and reinstalled the application and repeated the above process again;yet the same problem occured.
What kind of "application" are you talking about? Oracle database, Oracle client, some other stuff?