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

Cause: 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.

Action: 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.

Error Type: ORA

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