TS ping

During the TS ping process, the Switchover subsystem on the backup server sends a request through the Notifier subsystem on the active server to the TS subsystem on the active server. It then waits for a response. If the Switchover subsystem does not receive a response, it pauses for a specified amount of time (by default, 1 second) and then retries. If the second attempt is also unsuccessful, the backup server immediately starts the switchover procedure.

If you want to change either of the default timeout values, you can create and set the following server parameters in Interaction Administrator on the active server:

• Switchover TS Timeout: Specifies the number of seconds that the Switchover system waits from the time the ping is sent until it is marked as a TS failure. The value should be between 5 and 60 seconds. The default is 10 seconds.

• Switchover TS Failure Retry Delay: Specifies the number of seconds the Switchover system waits, after marking a TS failure, before sending the second ping. A second failure causes the system to switch.

  Note:
  Set this value to greater than 0 seconds. The default is 1 second.

• Switchover Max TS Failures: Specifies the number of TS ping failures that the Switchover system on the backup server tolerates before starting a switchover.

  Note:
  Set this value to greater than 0. The default value is 2. (Note that the error count is reset each time the Switchover system successfully receives a response from TS on the primary server.)

Frequently, a TS ping failure indicates that both the network connection and the Notifier connection have been lost, and that the TsServer is either backed up with processing requests or is unresponsive. Usually, the TsServer log is required to diagnose the root cause of the switchover event. However, you should also scan the system event logs and the Switchover log to verify that a lost network connection did not cause the ping to fail.