Administering GINA applications

8.4.3 Monitoring alarms

The delivery of an alarm to a non-transaction-monitored application is broken up into two parts. The partner is first informed of the event “Message n exists” via the auxiliary process EventHandler, and then the message is collected.

The termination of the non-transaction-monitored partner or the EventHandler, for example as a result of a power failure, can result in alarms being lost during delivery.

To prevent this, T-ORB provides a mechanism that monitors the delivery of alarms to non- transaction-monitored partners.

T-ORB checks at certain intervals whether alarms that were announced to the partner via the EventHandler have actually been collected. If this is not the case, T-ORB announces them again.

The time intervals are defined by the CYCLE(d,h,m,s), CHECK(d,h,m,s) and CANCEL(d,h,m,s) parameters in the EVENTCONTROL statement of the T-ORB generator config when the configuration is being created. For each transaction-monitored applica- tion, the T-ORB generator config generates the gina.config file, in which the intervals for the monitoring of alarms are stored (see Figure 41).

CTL2 0 0 10 0 100 // corresponds to CHECK(0,0,10,0)

CTL3 0 1 0 0 // corresponds to CHECK(0,1,0,0)

CTL4 2 0 0 0 // corresponds to CANCEL(2,0,0,0)

Figure 41 Time intervals for the monitoring of alarms

If these time intervals are to be changed while the transaction-monitored application is run- ning, the gina.config file must be modified using a suitable editor (e.g. vi) and then the DNEWCYCA administration command activated using the administration facility (cf. section 8.4.1 on page 199).

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GINA V4.0 System Administrator Guide – September 2000

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Siemens V 4.0 manual Monitoring alarms, Time intervals for the monitoring of alarms
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