I recently installed Oracle Database Express Edition 11g Release 2 (with APEX installed). Then went through the documented processes to upgrade APEX to R4.2. When I did that, I lost access to the APEX based GUI for managing the R11g XE database.
The "lost" application was reached by the URL http://127.0.0.1:8080/apex/f?p=4950
which now returns: Error Error processing request.
ORA-01403: no data found
Does anyone know if it is possible to recover or re-install the original Oracle Database Express Edition 11g Release 2 "Getting Started" APEX application in this new APEX 4.2 environment? This would greatly speedup my DB management tasks so I don't have to find SQL statements for all DB operations.