ORA-01017 Invalid Username/Password when connecting to 11g database from 9i client

Question

I\'m trying to connect to a schema on 11g (v11.2.0.1.0) from a PC with 9i (v9.2.0.1) client. It seems to connect fine to some schemas, but not this one - it comes back with

Answer 1

If all else fails, try resetting the password to the same thing. I encountered this error and was unable to work around it, but simply resetting the password to the same value resolved the problem.

Answer 2

Oracle 11 G and 12 C versions suggest to use more complex passwords, Although there is no issues during the user creation. The password must be alphanumeric and with special character.

Verify the password version and status of the user:

select * from dba_users where username = <user_name>;

Amend it to be like below in case of 11G 12C:

alter user <user_name> identified by Pass2019$;

Now test connection!

Answer 3

The tip on Oracle's OTN = Don't type your password in TOAD when you try to connect and let it popup a dialog box for your password. Type the password in there and it will work. Not sure what they've done in TOAD with passwords but that is a workaround. It has to do with case sensitive passwords in 11g. I think if you change the password to all upper case it will work with TOAD. https://community.oracle.com/thread/908022