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Some time ago my colleague Pavel Tolstorukov asked me for help with failing DUPLICATE TARGET DATABASE FOR STANDBY FROM ACTIVE DATABASE. The problem appeared during the recovery phase. The exact error looked like below: We worked on this together and were able to identify the problem: I don’t know what was the root cause of … Continue reading “‘ORA-19909: datafile 1 belongs to an orphan incarnation’ during duplicate for standby”