Learn the purpose and how to get to the bottom of the ORA-01004 error message in Oracle.
Description
When you come across an ORA-01004 error, the following error message will appear:
ORA-01004: default username characteristic now not supported; logon denied
Cause
You tried to perform an computerized logon to Oracle, but your gadget does now not help this.
Resolution
The option(s) to resolve this Oracle error are:
Option #1
Try logging on again by imparting a username and password.