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dkarthikreddy
New User
Joined: 14 Mar 2008
Posts: 28
Location: bangalore
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I would like to know how can I count the number of records in all the versions of a GDG, which are tapes. whthout copying them into a single file .
Thanks,
Karthik |
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expat
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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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My first question would be why would you either want to do this, or need to do this.
One idea would be to use SORT to read the generations using DD DUMMY as SORTOUT and get the counts from the SYSOUT.
But, once again, why |
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dkarthikreddy
New User
Joined: 14 Mar 2008
Posts: 28
Location: bangalore
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Thanks for the reply..
While analizing we came across this situation where in which we have to take the number of records and build our modules.. |
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dbzTHEdinosauer
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Joined: 20 Oct 2006
Posts: 6966
Location: porcelain throne
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| But, once again, why |
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| While analizing we came across this situation where in which we have to take the number of records and build our modules.. |
sounds like to OP is training to be a politician. |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| Quote: |
| sounds like to OP is training to be a politician. |
Or a manager 
I can honestly say that in 30+ years of IT I have never come across the need to know how many records are in a file.
Please give the reason for this crazy task. |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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| dkarthikreddy wrote: |
| I would like to know how can I count the number of records in all the versions of a GDG, which are tapes. whthout copying them into a single file . |
Who orginated this request?
And if this
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| While analizing we came across this situation where in which we have to take the number of records and build our modules.. |
is true - one day, sooner or later, all of us would be too busy in counting the number of records in many files we deal with. . .  . Suggest you tell us what your final goal is and why this approach was one of the alternatives - I believe, there may be better appraches to achieve that, once the requirement is understood. |
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superk
Global Moderator
Joined: 26 Apr 2004
Posts: 4652
Location: Raleigh, NC, USA
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| A COUNT combined with NODETAIL in Syncsort doesn't require any records to be copied. |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
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| we have to take the number of records and build our modules.. |
What might be changed in the code that would depend on record count?
If you talk with the tape storage management people, they can probably tell you the amount of data contained in a tape file. |
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Terry Heinze
JCL Moderator
Joined: 14 Jul 2008
Posts: 1249
Location: Richfield, MN, USA
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| If your tape management system is CA-1, you can get a good approximation for an FB file by calculating: (block size / logical record length) * block count. |
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