An appropriate environment must be made available by systems support in order to support large files. It is advisable initially to install this environment for test purposes only, on a test application or a guest system under VM2000.
System requirements
As described in Chapter “Large objects in BS2000”, large files can only be created in special pubsets, known as LARGE_OBJECTS pubsets, with the LARGE_FILES_ALLOWED attribute.
At least one of these pubsets must therefore be made available. This can be achieved by generation with SIR or by subsequent assignment of attributes using the SET-PUBSET-ATTRIBUTES command. The latter approach has the advantage that existing files can be included and updated.
Software configuration
The software configuration of the current BS2000 version supports the operation with large files.