During internal design, consider how to document and test the defined recovery and restart programs, exits, and procedures.
Recovery and restart programs and procedures usually relate to exceptional conditions, and can therefore be more difficult to test than those that handle normal conditions. They should, nevertheless, be tested as far as possible, to ensure that they handle the functions for which they are designed.
CICS® facilities, such as the execution diagnostic facility (CEDF) and command interpreter (CECI), can help to create exception conditions and to interpret program and system reactions to those conditions.
The ability of the installed CICS system, application programs, operators, and terminal users to cope with exception conditions depends on the designer and the implementer being able to:
Conditions that need documented procedures include:
It is essential that recovery and restart procedures are tested and rehearsed in a controlled environment by everyone who might have to cope with a failure. This is especially important in installations that have temporary operators.
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