How to fix the Oracle error ORA-12036: updatable materialized view log is not empty, refresh materialized view?

In this post, you’ll learn more about the Oracle ErrorORA-12036: updatable materialized view log is not empty, refresh materialized view with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12036: updatable materialized view log is not empty, refresh materialized view

Reason for the Error ORA-12036: updatable materialized view log is not empty, refresh materialized view

The updatable materialized view log was not empty. The updatable materialized view log must be empty before an updatable rowid materialized view can be altered to a primary key materialized view.

How to fix the Error ORA-12036: updatable materialized view log is not empty, refresh materialized view ?

You can fix this error in Oracle by following the below steps

Ensure that updatable materialized view log is empty by refreshing the materialized view before converting the updatable ROWID materialized view to a primary key materialized view.