Oracle Error ORA-26536: refresh was aborted because of conflicts caused by deferred transactions

Oracle Error Message

ORA-26536: refresh was aborted because of conflicts caused by deferred transactions

Reason for the Error

There are outstanding conflicts logged in the DEFERROR table at the materialized view’s master site.

Solution

Resolve the conflicts in the master DEFERROR table and refresh again after the table is empty. Alternatively, refresh with REFRESH_AFTER_ERRORS, even if there are conflicts in the master’s DEFERROR table. Proceeding despite conflicts can result in an updatable materialized view’s changes appearing to be temporarily lost, until a refresh succeeds after the conflicts are resolved.

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