DCS extensions

DCS provides action statement extensions to DAL and JAL to allow you to specify the service to be provided when data set contention occurs, to specify data set repossession for certain groups of users, and to request Contention Management recording:

  •  Common to DAL and JAL:
    • DCS SERVICE
    • DCS REPO
  • Unique to DAL:
    • DCS ALTER
  • Unique to JAL:
    • DCS RECORD

DCS also provides the ALERT facility, allowing you to notify the owner of a job that has been delayed because of data set contention, and the NAG facility, which lets you "nag" users who are holding a data set required by a batch job. Two definition statements are supported:

  • Common to DAL and JAL:
    • DCS_NAGDEF
  • Unique to JAL:
    • DCS_ALERTDEF

These allow you to define the messages that will be issued. To issue the messages, DCS provides two communications statements:

  • Common to DAL and JAL:
    • DCS NAG
  • Unique to JAL:
    • DCS ALERT

DCS also adds Descriptors to help manage data set contention.

This section provides information about the following topics:

 

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