Oracle / PLSQL: ORA-01004 Error Message

Learn the cause and how to resolve the ORA-01004 error message in Oracle.

Description

When you encounter an ORA-01004 error, the following error message will appear:

• ORA-01004: default username feature not supported; logon denied

Cause

You tried to perform an automatic logon to Oracle, but your system does not support this.

Resolution

The option(s) to resolve this Oracle error are:

Option #1

Try logging on again by providing a username and password.