Oracle Error Message
ORA-16535: Oracle Restart or Oracle Clusterware prevented completion of broker operation
Reason for the Error
The broker could not complete the operation because Oracle Restart (for single instance databases) or Oracle Clusterware (for RAC databases) could not stop services or instances on this database.
Solution
Check the Data Guard broker log file for more information and stop the appropriate services or instances using SRVCTL. Then retry the broker operation.