I can't remember my Oracle Express Database credentials

Oracle Express Edition passwords?

If so:
from a command prompt:
sqlplus / as sysdba

That connects you as the SYS user.  From here you can change whatever users password you want.

For example SYSTEM:
SQL> password system

Hi

Firstly thanks for prompt response

yes it is currently \oracle\product\10.2.0\ version

This is a legacy install and I have no Oracle experience.

So to confirm from the command prompt
Type sqlplus / as sysdba


Type sysdba> password xxxxx

>>Type sqlplus / as sysdba

Correct.

That should get you to a SQL> prompt

Then you type:
password some_user

You will be prompted for the new password.

Note: If applications connect with the user, they might have the user password stored outside of the database and changing the password can cause the apps to stop working.

>>>>Type sqlplus / as sysdba

You need to make sure you are logged into the machine with a user that is a member of the ORA_DBA group.

Hi

I followed your above instruction and when I get I type in sqlplus / as sysdba
 I get the following error

Error:
Ora-010311:
Insufficient Privileges

I have checked and the account I'm logged in with is in the ora_dba group

Do you have more than one Oracle product installed on this machine?

Sorry for delay in replying, no other Oracle products are installed

>>Change (NONE) to (NTS) for the sqlnet_authentication

Yes.  I forgot that piece on Windows.  Oracle and Windows really do not get along real well.

Feel free to accept your last post as the answer.

Found this solution in a different thread in relation to Oracle issues