Oracle / PLSQL: ORA-02444 Error Message

Learn the cause and how to resolve the ORA-02444 error message in Oracle.

Description

When you encounter an ORA-02444 error, the following error message will appear:

• ORA-02444: cannot resolve referenced object in referential constraints

Cause

You tried to create a foreign key, but referenced an object that wasn't a table.

Resolution

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

Option #1

This error can occur when you try to create a foreign key that references an object that isn't a table. Redefine your foreign key to reference a table.

Please note that you should not try to use an Oracle system table in a foreign key.