How do I discover the Oracle Express workspace name? Is there a way to discover the WORKSPACE name if I've forgotten it? 

I cannot login to the APEX admin console since I've forgotten what the workspace name was. 

I do know the SYSTEM user password.

Could you please help me recovering my workspace name?
There are two tables you can get this info from.

APEX_WORKSPACES and APEX_APPLICATIONS.

The schema that these tables reside in depends on the APEX version. By way of example, my vanilla Oracle 11.2 install has them in the APEX_030200 schema. To list: select USERNAME from DBA_USERS where USERNAME like 'APEX%'.