Recovering from TCP/IP failure

When TCP/IP terminates or fails, you need to recover from this situation.

Symptoms

TCP/IP messages and Db2 messages are issued to indicate that TCP/IP is unavailable.

Environment

Distributed data facility (DDF) periodically attempts to reconnect to TCP/IP. If the TCP/IP listener fails, DDF automatically tries to re-establish the TCP/IP listener for the DRDA SQL port or the resync port every three minutes. TCP/IP connections cannot be established until the TCP/IP listener is re-established.

Resolving the problem

Operator response:

1. Examine the messages that are received at the console to determine the cause of the problem.
2. Correct the condition.
3. Restart TCP/IP. You do not need to restart DDF after a TCP/IP failure.