Answer / guest

GDG - group of dataset that are logically or chronologically
related, referred by name and a relative generation number -
an integer which identifies the generation of a dataset and
is coded in parentheses after dataset name. Absolute GDG
name - GxxxxVyy, where xxxx-absolute gen. number, yy-version
number. Can be sequential, direct, partitioned. (VSAM - no).
Must always be cataloged. Advantage - all datasets have the
same name and system keeps track of adding new and retaining
previous generations and deleting oldest successive
generation. To create a GDG we create a GDG index in the
system catalog with IDCAMS utility and then a model
(prototype, DSCB) on the same volume to supply DCB
information. Empty - when limit is reached all members are
removed from the index, otherwise-only oldest.
Scratch-removed members are uncataloged & deleted, otherwise
- removed & uncataloged, but remain in the system (not
members of GDG any more). GDG number is updated at the end
of the job. If number is not specified all generations will
be processed from the beginning

which utility is used to update pds?

1 Answers   IBM,

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A statement about PROCs is " In PROCs, Symbolic Parameters can be assigned on PROC and EXEC", BUT On which EXEC, (i) On the JCL's EXEC which is calling to PROC1. (Inside JCL, EXEC PROC1) (ii) or On the PROC's EXEC where it calls the PGM1. (Inside PROC, EXEC PGM=PGM1)

2 Answers   IBM,

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How does jcl specify the job to the operating system?

0 Answers  

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common jcl abends??

2 Answers   ADP, Wipro,

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How to send data from cobol program to jcl?

2 Answers   CSC,

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In sms datasets, what is the function of the dd avgrec keyword?

0 Answers  

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how to identify the file used in the JCL is an VSAM file. Just seeing the JCL code how can we track the file as VSAM file?

6 Answers   CSC,

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What is the difference between Sysin,Sysout,Sysdbout and Sysudump?

3 Answers  

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what is meant by jobtrac?

4 Answers   CSC,

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In how ways you can pass the data from Jcl to cobol ?

3 Answers   Cap Gemini, IBM,

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Can we give TIME = (1440, 59) also ? or is TIME = (1439, 59) is the last one ?

5 Answers   IBM,

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Step 1 RC 4 Step 2 Step 3 I want to know the COND parameter which can be coded in step 2 or 3. Step 2 should be executed based on Step 1 RC and Step 3 should not be executed based on step 1's RC

0 Answers  

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