Database Synchronization Status | Proficy iFIX 2024 Documentation

The Database Synchronization screen in the SCADA Sync Monitor displays information on the database synchronization between the active and standby nodes. For instance, by looking at this screen you can determine how fast the database updates are occurring between the active and standby nodes.

The following table describes the fields that appear in this screen.

Field or Area	Description
Last Time Sent	The time the SCADA last sent a successful synchronization.
Last Date Sent	The date the SCADA last sent a successful synchronization.
Seconds Between Synchronizations	The total number of seconds it takes to synchronize the active database with the standby database, from beginning to end. The value of this field is always greater than the "Duration of Last PDB Synchronization" field. The Seconds Between Synchronizations field is perhaps the most valuable field to monitor on this screen.
Duration of Last PDB Synchronization	The total number of seconds it took to send the synchronized data from the active database to the standby database, over the active network connection.
Number of Synchronizations Sent	Total number of synchronizations sent since iFIX started and a successful synchronization communication occurred. The maximum number that can appear in this field is 4,294,967,296. After this number is reached, the number is reset to zero and the counter restarts.
Number of Synchronizations Received	Total number of synchronizations received since iFIX started and a successful synchronization communication occurred. The maximum number that can appear in this field is 4,294,967,296. After this number is reached, the number is reset to zero and the counter restarts.
Number of PDB Blocks	The number of database blocks included in the synchronization.
PDB Size in Bytes	The size of the entire iFIX process database that is being synchronized, in bytes.
Last Sending Error	The number of the last error message that appeared.
Enable/Disable Maintenance Mode	This button is available only on the primary node. It is not displayed on the secondary node. Maintenance Mode allows you to temporarily suspend synchronization between the two SCADA nodes, so that you can make changes to your database while the SAC is still running. When you finish making your changes, click the Disable Maintenance Mode button to become the active node; your changes will now be synchronized with the standby node. For more information, refer to the Maintenance Mode section. NOTE: Using maintenance mode forces both SCADAs in a pair to active status. This will place increased load on your PLC network, as the I/O drivers on both nodes are polling at the active rate. Both nodes will generate alarms.