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GDG - Generation Data Groups FAQs

 
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Phantom
Data Mgmt Moderator
Data Mgmt Moderator


Joined: 07 Jan 2003
Posts: 1056
Topics: 91
Location: The Blue Planet
PostPosted: Wed Nov 30, 2005 5:25 am    Post subject: GDG - Generation Data Groups FAQs Reply with quote
Generation Data Groups - What is a GDG
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA5B500/APPENDIX1.3?DT=19940305134027
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DGT2D410/3.9?DT=20020122112221

Define a GDG
http://publibz.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/DGT2I230/15.0?DT=20040628101835

Alter the Attributes of a GDG
http://publibz.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/DGT2I230/5.3.4?DT=20040628101835

Listcat - GDG - List information about a GDG
http://publibz.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/DGT2I230/B.1.6?DT=20040628101835

Delete GDG
1. Delete all version of a GDG Keeping the Base
Code:

//STEP1  EXEC PGM=IEFBR14
//DD1    DD  DSN=userid.mygdg,DISP=(SHR,DELETE,KEEP),


2. Delete GDG Base + All its versions
Code:

//R010   EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
  DELETE my.gdg.base FORCE
/*
//SYSDUMP DD SYSOUT=*
//*

(Or)

//SYSIN DD *
  DELETE my.gdg.base GDG PURGE
/*


3. Delete GDG version - with no corresponding base
http://mvsforums.com/helpboards/viewtopic.php?t=3708&highlight=gdg


Merge all GDG versions into a PS file
Code:

//R010   EXEC  PGM=SORT
//SORTIN   DD  DSN=my.gdg.base,
//           DISP=SHR
//SORTOUT  DD  DSN=my.new.ps.dataset,
//           DISP=(NEW,CATLG,DELETE),
//           UNIT=SYSDA,
//           SPACE=(CYL,(1,1),RLSE)
//SYSOUT    DD  SYSOUT=*
//SYSIN       DD  *
  SORT FIELDS=COPY
/*

Note: All GDG versions will be concatenated one by one if you try to allocate the base name alone to any DD Name.

Changing Version number Vnn for a GDG
http://mvsforums.com/helpboards/viewtopic.php?t=5300&highlight=gdg

Concatenate Versions in reverse Order
http://www.mvsforums.com/helpboards/viewtopic.php?t=2109&highlight=gdg

Renaming GDGs
http://mvsforums.com/helpboards/viewtopic.php?t=4902&highlight=gdg

Browsing GDGs
http://mvsforums.com/helpboards/viewtopic.php?t=4931&highlight=gdg

Thanks,
Phantom
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Phantom
Data Mgmt Moderator
Data Mgmt Moderator


Joined: 07 Jan 2003
Posts: 1056
Topics: 91
Location: The Blue Planet
PostPosted: Wed Dec 14, 2005 11:35 pm    Post subject: Reply with quote
How can I Alter the Maximum number of GDG Generations ?
http://www.mvsforums.com/helpboards/viewtopic.php?p=26316#26316

Thanks,
Phantom
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