Maintaining active TCP connections in a network environment
If your deployment of CDC Replication is in a network environment that uses a firewall, VPN gateway, or local system tools to detect idle TCP connections, it may be necessary to configure the product to prevent these connections from being closed during periods of application inactivity between the source and target.
About this task
By default, CDC Replication sends a message over TCP connections every 20 seconds to ensure these connections remain active during periods of inactivity. If your network policies close TCP connections for idle periods of less than 20 seconds, you must change the configuration of each instance of CDC Replication to ensure the TCP connections remain open.
Procedure
What to do next
CDC Replication will now send messages over the TCP connection every 10 seconds.