ORA-16087: graceful switchover requires standby or current control file
Cause: An attempt was made to perform a graceful switchover operation using a backup or clone control file.
Action: Convert the backup control file into a current control file prior to attempting a graceful switchover operation. A clone control file cannot be used for a graceful switchover operation.
Cause: An attempt was made to perform a graceful switchover operation using a backup or clone control file.
Action: Convert the backup control file into a current control file prior to attempting a graceful switchover operation. A clone control file cannot be used for a graceful switchover operation.
