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Oracle 19c: Automatic flashback in standby following primary database flashback

When flashback or point-in-time recovery is performed on the primary database, a standby that is in mounted mode can automatically follow the same recovery procedure performed on the primary

When flashback or point-in-time recovery is performed either on a primary database or a PDB in the primary database, the primary database or PDB is moved to a previous point in time and the primary is then opened with the RESETLOGS option. A new incarnation of the primary or the PDB in the primary is created. For the standby to automatically follow the primary, the MRP performs the following actions:

  • detects the new incarnation
  • flashes back the standby or the PDB on the standby to the same point in time as that of the primary or the PDB on the primary
  • restarts the standby recovery and moves the standby to the new branch of redo
  • The flashback operation will succeed only when the standby database has sufficient flashback data.

If you do not want the standby to automatically follow the primary, either keep the standby database in OPEN mode or stop the MRP process on the standby.

September 13th, 2020 | Tags: , | Category: 19c Database

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