What is a GDG base?
Introduction. A Generation Data Group (or GDG) is a group of related files that can be referenced individually or as a group. The files (or generations) within a GDG are assigned names derived from the name of the GDG base. For example, if the GDG base is called “SIMOTIME. DATA.Click to see full answer. Similarly,…
Introduction. A Generation Data Group (or GDG) is a group of related files that can be referenced individually or as a group. The files (or generations) within a GDG are assigned names derived from the name of the GDG base. For example, if the GDG base is called “SIMOTIME. DATA.Click to see full answer. Similarly, it is asked, how many GDG versions can be created? 255 generations Similarly, what is the use of GDG in JCL? Using GDG in a JCL GDG is used as input to the program and a new version of MYDATA. URMI. SAMPLE. GDG is created as the output. Besides, what is the maximum limit of GDG? The LIMIT parameter on the IDCAMS DEFINE GDG command is changed to accept a maximum value of 999 for extended GDGs. The previous maximum LIMIT value of 255 still applies to GDGs which are not defined as EXTENDED.How increase GDG limit in JCL?Altering GDG limit. If you use the access method services ALTER command to increase the GDG limit, no rolled-off GDSs or deferred roll-in GDSs are rolled in. When you increase the GDG limit, you must use the ALTER ROLLIN command to roll in the rolled-off generations if you need to access them.
