Saturday, November 26, 2011

Generation data groups


This concept is used to keep track of the records in chronological order to create gdg base name must be created by using IBM utility IDCAMS
The basename must be coded in the DEFINE command of sysin dd *



Parameters specified for base:-

LIMIT: this is used to generate no of versions/generations to the base . max no of generations is 255

SCRATCH: used to delete all the generations when limit is reached

NO SCRATCH: used to delete oldest generation when limit is reached

EMPTY: used to uncatilog all the generation when limit is reached

DATEEXPRIED: used to keep the dataset for specified time.

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