Saturday, August 15, 2020

ORA-10485: Real-Time Query cannot be enabled while applying migration redo

This error message may appear in the alert log file of standby database after an upgrade/PSU etc. is applied on the primary database and if real time apply is enabled on the standby database.
The procedure to apply a PSU or other (rolling) patches is that it is first applied on the standby database server and after that on the primary database, and any post patch (or upgrade) scripts are executed on the primary database. Once this completes, all database changes happened during patch/upgrade scripts execution are shipped through redo logs to the standby database and standby database eventually becomes in sync with the primary.

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