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Why does a Materialized View contain no data after an attempted REFRESH, when the dependant database

edited Jan 9, 2014 8:57AM in Database DataWarehousing (MOSC) 2 commentsAnswered
My compnay uses Materialized Views to share data between Application Databases.  In the past week, we have come across a situation where a Materialized view is becoming empty in the morning after a database scheduled DBMS_REFRESH was executed.  Some research and testing has lead me to believe that the cause is the Database link used by the materialized view was invalid.

Is there a was to retain the Materialized View data, if there are an issues with the database base link being used?

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