How to resolve ORA-02260 Error Message in Oracle database

Learn the purpose and how to resolve the ORA-02260 error message in Oracle.

Description

When you come across an ORA-02260 error, the following error message will appear:

ORA-02260: table can have only one primary key

Cause

You tried to create a major key for a desk that already has a main key.

Resolution

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

Option #1

You can drop the existing major key for the desk and create a new essential key.

For example, to drop the most important key named supplier_pk from the supplier table, you could execute the following command:

ALTER TABLE supplier
 DROP CONSTRAINT supplier_pk;

Then re-create your primary key.