The derby.replication.minLogShippingInterval property specifies, in milliseconds, the shortest interval between two consecutive shipments of the transaction log from the master to the slave.
The value specified for the derby.replication.minLogShippingInterval property must be no more than one-tenth the value specified for the derby.replication.maxLogShippingInterval property. If you set derby.replication.minLogShippingInterval to a higher value, Derby changes the derby.replication.minLogShippingInterval property value to the value of the derby.replication.maxLogShippingInterval property divided by 10.
100 milliseconds.
derby.replication.minLogShippingInterval=500
This property is static; if you change it while Derby is running, the change does not take effect until you reboot.