Resource definition is the process by which you tell your system which resources to use, what their properties are, and how CICS can use them. CICS/400 must know the configuration of terminals and logical units in the network. To process transactions, it must be able to load and execute the appropriate program for each expected transaction type. To recover data in the event of a problem with the system, it must be able to locate temporary storage queues.
Gathering preliminary information
Before you start, you need to gather all the information necessary to define the resources to the system, based on business requirements, information provided by either the application developer or the packaged software application. In addition, you have to create the underlying OS/400 objects required by the applications.
To understand the requirements, you need the answers to a number of questions. For instance:
Resource definition tables
Resources are stored in resource definition tables. CICS/400 uses the information in the tables to control the interactions between, for example, programs and terminals, transaction identifiers and programs, between different CICS systems, and so on.
There are 11 different resource definition tables: some, like the system initialization table (SIT), need to be defined before CICS can be executed; but others, like the conversion vector table (CVT), need not be defined for CICS to function successfully. The resource table names are abbreviated to three-letter acronyms. Throughout the rest of this chapter, the acronym is used to refer to the tables, unless otherwise stated. Resources may reside on the local CICS/400 system, or on a remote CICS system. All resources residing on other CICS systems, and the systems themselves, should be defined in the appropriate resource definition table, before CICS can access the systems and use those resources.
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Ibm - As/400 Tutorial
Introducing Cics® For Iseries™
Defining A Basic Control Region
Security Requirements For Cics/400
Defining Your Own Control Region
Administering The Control Region
Administering A Cics/400 Shell
Defining Resources-reference Information
Autoinstall For Terminal Definitions
Introduction To Cics/400-supplied Transactions
Cemt—cics Master Terminal Transaction
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