I installed Oracle 18c XE and SQL Developer 18.4, both are the latest.
Logged in with SYSTEM and created a user
vbk in SQL Developer.
I see the user running
select * from dba_users, but when I try to connect in SQL Developer, it says
ORA-01017 Invalid Username/Password
I tried to reset the password with SYSTEM user:
ALTER USER vbk IDENTIFIED BY xxx;
and I get
ORA-01918: user 'VBK' does not exist
I see that in the message the user name is upper case, even though the user was created with lower case.
How to connect with the user?