Largest size for CA Datacom database files

Document ID : KB000093149
Last Modified Date : 26/04/2018
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What is the largest flie allocation size for a data area in CA Datacom?

Each application database file is a standard sequential (PS) file, subject to the same rules as any other PS file. As a BASIC type file, it is limited to 16 extents per volume, and no more than 65535 tracks on one volume. This file can be allocated on as many as 59 volumes if needed. If more than 65535 tracks are needed on a volume, allocating the file with DSNTYPE=LARGE will allow up to 16,777,215 tracks on a single volume. CA Datacom does not support Extended Format files, but using DSNTYPE=LARGE should meet most application needs.

Additional Information:

For more information about file allocations and limits, please see the IBM DFSMS Using Data Sets manual:

* For z/OS 2.3,
* For z/OS 2.2,
* For z/OS 2.1,

As always, please contact CA Technologies support for CA Datacom if you have further questions.