How to fix the Oracle error ORA-12052: cannot fast refresh materialized view string.string?

In this post, you’ll learn more about the Oracle ErrorORA-12052: cannot fast refresh materialized view string.string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12052: cannot fast refresh materialized view string.string

Reason for the Error ORA-12052: cannot fast refresh materialized view string.string

Either ROWIDs of certain tables were missing in the definition or the inner table of an outer join did not have UNIQUE constraints on join columns.

How to fix the Error ORA-12052: cannot fast refresh materialized view string.string ?

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

Specify the FORCE or COMPLETE option. If this error is got during creation, the materialized view definition may have be changed. Refer to the documentation on materialized views.