Database availability with DB2 automatic client reroute feature

The automatic client reroute feature of DB2® assists a highly available system. It allows the database driver to continuously poll for database connectivity after a connection is lost.

The automatic client reroute feature of DB2 specifies an alternative database host name and port on the DB2 server instance for the Tivoli®'s process automation engine database. When a problem occurs with the database connection, Tivoli's process automation engine attempts to connect to the original database host name and the alternative host name until a connection can be reestablished.

The interruption to the application is minimal: During a database failure, the browser session pauses until a connection is reestablished. When a database connection can be restored to either database, a notification states that the record or the transaction must be resubmitted.

The automatic client reroute feature of DB2 works with various different types of DB2 database configurations, such as DB2 HADR, High Availability Cluster Multi-Processing (HACMP™) for AIX® (HACMP), and shared disk.



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