(a) Starting

The SUP is started when:

• OpenTP1 starts if the server name of the SUP is specified in the user service configuration definition, or
• The dcsvstart command is executed if the server name of the SUP is not specified in the user service configuration definition.

Before the SUP can request an SPP for service, the SPP must start. The SPP must have started before the SUP has.

(b) Terminating

Once an SUP has been started, it cannot be terminated normally by OpenTP1. Even when a command to exit OpenTP1 normally is executed, OpenTP1 will not terminate until all the SUPs in OpenTP1 termination.

When coding the SUP, design it so that it will terminate by itself. To cause the SUP to terminate abnormally if a problem occurs, design the SUP using a COBOL statement to exit the program so that it will terminate by itself.

The SUP cannot be terminated normally by the dcsvstop command. However, the SUP can be brought into forced termination by the dcsvstop -f command.

Do not terminate any SUP process by the kill command.

(a) Starting

The SPPs and MHPs belonging to one user server (service group) start at once. They start when:

• OpenTP1 starts if the server name of the SPPs and MHPs is specified in the user service configuration definition, or
• The dcsvstart command is executed if the server name of the SPPs and MHPs is not specified in the user service configuration definition.

If the multiserver facility is in use, the same number of user server processes as the specified number of resident processes are acquired. If the number of service requests increases, nonresident processes will start as well.

(b) Terminating

The SPP or MHP terminates when:

• Termination processing begins because one of the following OpenTP1 terminate commands is executed:
  dcstop (normal termination)
  dcstop -n (forced normal termination)
  dcstop -a (planned termination A)
  dcstop -b (planned termination B)
  dcstop -f (forced termination)
  
• The active online process enters termination steps because one of the following server termination commands is executed:
  dcsvstop (normal termination)
  dcsvstop -f (normal termination)
  
• The active online process is brought into termination by OpenTP1 because the maximum number of processes in the user service definition is exceeded;
• The SPP or MHP which is executing as a nonresident process finishes service processing; or
• The number of requests addressed to the service group decreases if loads on SPPs are distributed using a multiserver configuration.

Do not terminate any SPP or MHP process by the kill command.

Users can start UAPs that handle offline work by any method. The UAPs are terminated by terminating the processes by the shell. Users are responsible for starting and terminating UAPs that handle offline work.