ORA-16796: one or more properties could not be imported from the database

Cause:

The configuration file is not opened and does not exist on the standby server.

Solution:

1. Stop the Data Guard Broker on both, the Primary and Standby Database using following Command:

   SQL> alter system set dg_broker_start=false scope=both;

2. Remove the old Data Guard Broker Configuration Files specified by the Initialization Parameter ‘DG_BROKER_CONFIG_FILE1|2’ from Primary and Standby Site.
3. Start the Data Guard Broker on both Sites again:

   SQL> alter system set dg_broker_start = true scope=both;

4.  And Finally recreate the Data Guard Broker Configuration.