How to fix the Oracle error ORA-30457: ‘string.string’ cannot be refreshed because of unmnanaged NOT NULL columns in container?

In this post, you’ll learn more about the Oracle ErrorORA-30457: ‘string.string’ cannot be refreshed because of unmnanaged NOT NULL columns in container with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30457: ‘string.string’ cannot be refreshed because of unmnanaged NOT NULL columns in container

Reason for the Error ORA-30457: ‘string.string’ cannot be refreshed because of unmnanaged NOT NULL columns in container

The container object for the summary contains one or more unmanaged columns do not allow nulls, and which do not specify a default valur for those columns.

How to fix the Error ORA-30457: ‘string.string’ cannot be refreshed because of unmnanaged NOT NULL columns in container ?

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

Make sure that default values are specified for all NOT NULL columns that are not part of the summary definition.