ora-01017 invalid username/password logon denied can't logon with the new connection

Question

Hey please am using oracle 11g XE and I have created a new user under the username "amine" and set the password to "amine" in SQL developer, I have also granted all permissions and system privileges but when I try to create a new connection using the "amine" user it gives an ora-01017 even if the username and the password are correct Steps that I tried:

-- setting the case sensitivity to FALSE

-- make sure that the user is created and the status is open (using sqlplus)

-- tried the command: alter user amine identified by "amine"; result ---> ORA-01918: user 'AMINE' does not exist

Answer 1

I have created a new user under the username "amine"

It sounds like you have used the query:

CREATE USER "amine" IDENTIFIED BY "amine";

This will create a case-sensitive username and a case-sensitive password as you have surrounded the identifiers with double quotes.

If you try in SQL/Plus (or via equivalents in other UI such as SQL Developer's connection dialog) to use any one of these:

CONN amine/amine
CONN "amine"/amine
CONN amine/"amine"

Then it will fail as the unquoted values will be implicitly converted to upper-case as Oracle stores non-case-sensitive identifiers in upper-case.

You would always need to quote both the username and the password. Ie in SQL/Plus

CONN "amine"/"amine"

Or using quotes in the username field in SQL Developer.

You can check if you did this by running:

SELECT username
FROM   all_users
WHERE  UPPER(username) = 'AMINE';

If the value comes back as lower-case (or, even, if there are now two users amine and AMINE ) then you created the first one with a case-sensitive username and you will need to surround the username with double quotes whenever you want to use it.

Such as:

GRANT CREATE SESSION TO "amine";