Any data set defined to file control can be allocated to CICS® dynamically when the file is opened, rather than at CICS job initiation time. This allocation takes place automatically if job control statements for the data set are not included in the CICS job stream, and if both the data set name and the disposition have been specified in the file control table when the data set is opened.
The dynamic allocation sample program provides an alternative way to perform dynamic allocation. When used with a terminal of the IBM® 3270 Information Display System, it gives the user access to the functions of DYNALLOC (SVC 99) in MVS™. This can be used, in conjunction with master terminal functions and suitable operating procedures, to allocate and deallocate any file that CICS can dynamically open and close.
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