ORA-16259: Switchover to logical standby requires

admin

ORA-16259: Switchover to logical standby requires a log archive destination
Cause: A valid log archivedestination was not found to which the local system
could archive the end of redo (EOR) log file. A minimum of one destination is
required.
Action: Ensure all logarchive destinations are properly configured and, if
applicable, have network connectivity before reissuing the ALTER DATABASE
COMMIT TO SWITCHOVER TO LOGICAL STANDBY DDL operation.