Introduction to Data Management

Developing Applications With PATHWAY
15873 Tandem Computers Incorporated 6-13
c. Starting your new PATHWAY system. Here, PATHMON starts the
PATHMON backup process (if one is requested), and creates the PATHWAY
control file that will contain the configuration and control information for all
objects in your PATHWAY system. During system configuration, PATHMON
continuously updates the control file as object definitions are added, altered, or
deleted. When you restart a PATHWAY system after shutdown or failure,
PATHMON uses this file to reconstruct your system.
5. Configuring the TCPs, TERMs, PROGRAMs, and SERVERs that support your
application. In this step, you define the attributes for each object, assign the object
a name, and add its name and defintion to the system (in the PATHWAY control
file).
6. Starting the TCPs, TERMs, and SERVERs, and running the PROGRAMs. Now,
you create the processes that control the objects in your PATHWAY system. This
is the step that activates your application. Now, the PATHWAY system runs its
screen programs on the terminals you have defined. The system runs as many
copies of the servers as you need to support your application’s throughput and
response time requirements. The system manages the interaction among the end
users’ input devices, the screen programs, and the servers.
7. Controlling and maintaining your PATHWAY system and its objects. At any
point, you can display object definitions, status, and statistics to evaluate such
factors as transaction throughput and configured object size. You can also change
object attributes, delete objects, and control object status. These actions are often
necessary to satisfy your transaction throughput and response time requirements,
and to update or expand the system to provide needed resources.
8. Stopping TCPs, TERMs, and SERVERs, as needed.
9. Shutting down your PATHWAY system. The actions you take in this step enable
you to easily restart the system later.