Configuring Failover

When the Business Process is configured for load balancing, BPM’s failover capabilities ensure throughput of running Business Process instances. When Business Process instances encounter an engine failure, BPM load balances those instances across all available engines. As with load balancing, BPM’s failover capabilities are limited to non-correlated messages.

To configure failover

1. In the Environment Explorer, right-click the application server and then click Properties.
2. In the BPM Engine Configuration properties, set the Engine Expiry Interval property to register itself as alive frequently enough to meet the demands of your system.
3. In the BPM Engine Configuration properties, set the Failover Grace Period property to the optimal elapsed time period before moving running Business Process instances from an unavailable engine to an available engine.

   Note - Optimizing these two property setting might require some testing. The Engine Expiry Interval property also applies to the interval for the recovery of dangling instances.