How to fix the Oracle error ORA-12097: changes in the master tables during refresh, try refresh again?

In this post, you’ll learn more about the Oracle ErrorORA-12097: changes in the master tables during refresh, try refresh again with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12097: changes in the master tables during refresh, try refresh again

Reason for the Error ORA-12097: changes in the master tables during refresh, try refresh again

There are some changes (i.e., conventional DML, direct load, partition maintenance operation) in the master tables during materialized view refresh.

How to fix the Error ORA-12097: changes in the master tables during refresh, try refresh again ?

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

Refresh the affected materialized views again.