In this post, you’ll learn more about the Oracle ErrorORA-16651: requirements not met for enabling fast-start failover with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-16651: requirements not met for enabling fast-start failover
Reason for the Error ORA-16651: requirements not met for enabling fast-start failover
The attempt to enable fast-start failover could not be completed because one or more requirements were not met:
– The Data Guard configuration must be in either MaxAvailability or MaxPerformance protection mode.
– The LogXptMode property for both the primary database and the fast-start failover target standby database must be set to SYNC if the configuration protection mode is set to MaxAvailability mode.
– The LogXptMode property for both the primary database and the fast-start failover target standby database must be set to ASYNC if the configuration protection mode is set to MaxPerformance mode.
– The primary database and the fast-start failover target standby database must both have flashback enabled.
– No valid target standby database was specified in the primary database FastStartFailoverTarget property prior to the attempt to enable fast-start failover, and more than one standby database exists in the Data Guard configuration.
How to fix the Error ORA-16651: requirements not met for enabling fast-start failover ?
You can fix this error in Oracle by following the below steps
Retry the command after correcting the issue:
– Set the Data Guard configuration to either MaxAvailability or MaxPerformance protection mode.
– Ensure that the LogXptMode property for both the primary database and the fast-start failover target standby database are set to SYNC if the configuration protection mode is set to MaxAvailability.
– Ensure that the LogXptMode property for both the primary database and the fast-start failover target standby database are set to ASYNC if the configuration protection mode is set to MaxPerformance.
– Ensure that both the primary database and the fast-start failover target standby database have flashback enabled.
– Set the primary database FastStartFailoverTarget property to the DB_UNIQUE_NAME value of the desired target standby database and the desired target standby database FastStartFailoverTarget property to the DB_UNIQUE_NAME value of the primary database.