How does RC/Merger generate the REGION size parameter ?

Document ID : KB000012026
Last Modified Date : 14/02/2018
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Question:

Did you know how RC/Merger use the REGION size ?

Answer:

If RC/Merger knows the storage requirement for a particular job it can include the REGION parameter. If RC/Merger are not sure of the storage, it can simply ignore the REGION parameter or set the REGION parameter to 0. So that, maximum storage can be obtained for a Job based on the availability. 


If RC/Merger job requires more virtual storage based on the number of lines to process the setting of the region parameter at the job level is suggested (REGION=0 or ignore the REGION parameter).