How to Remove EM Express XDB Credential Dialog

You may surprisingly see a credential dialog from XDB like the feature image when you tried to login Oracle Enterprise Manager Database Express (EM Express).

Rationale

This is because you have enabled the global port of EM Express for all containers. That is to say, all containers share one EM Express port.

Actually, the third field in the login page asks for a container name. What you should enter is not the database name, it's container name.

Let's see what container that we have.

SQL> column con_id format 99;
SQL> column name format a30;
SQL> select con_id, name from v$containers;

CON_ID NAME
------ ------------------------------
     1 CDB$ROOT
     2 PDB$SEED
     3 ORCLPDB

Solution

OK, so we should NOT use ORCLCDB, instead we should use CDB$ROOT or any other container name.

Then login.

The new UI of EM Express may be unfamiliar to you. It's because EM Express adopts Java JET technology for its UI since 19c, if you'd like to old flash-based UI, you can switch EM Express 19c Back to Flash-Based.