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kishorebodipati · Posted: Thu Apr 22, 2004 12:01 am Post subject: concatanating

Dear all,

How can we Concatenate variable length record datasets thru JCL

Thanks,
Kishore

kishorebodipati · Posted: Thu Apr 22, 2004 1:35 am Post subject:

Hi Ravi,

Is it possible to concatenate 3 different datasets with different LRECL thru JCL.If so how? This is interview question.

Regards,
kishore.

Meg · Beginner Joined: 08 Jul 2003 Posts: 44 Topics: 16

Hi Kishore,
We can concatenate and merge files with different LRECL (If this is what you meant) using SORT utility. The sorted output file will be a VB file and the LRECL will be the same as that of the file having the maximum LRECL. For e.g, if ipfilea, ipfileb,ipfilec are having the lrecl of 20,40 and 30 respectively the output file will be a VB file having a LRECL of 40. I am not too sure if it is possible to have output file of FB format but I guess it is possible using SORT again.
Thanks,
Megana

kolusu · Posted: Thu Apr 22, 2004 5:37 am Post subject:

kishorebodipati,

To concatenate data sets, omit the ddnames from all the DD statements except the first in the sequence. The data sets are processed in the same sequence as the DD statements defining them.

Concatenated data sets with format-V records can have different logical record lengths as long as the data set with the largest logical record length appears first in the concatenation. (Note that you can state a value equal to the largest logical record length for LRECL on the first DD statement, regardless of what the actual logical record length of this data set is.)

Check this link for Concatenating Data Sets Sequentially

Hope this helps...

Meg: Sort Utility does not allow concatenating files for different Lrecl.

Cheers

Kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu

kishorebodipati · Posted: Thu Apr 22, 2004 5:59 am Post subject:

Thanks Kolusu....... Megana pls update this.........

Thanks,
kishore

Frank Yaeger · Posted: Thu Apr 22, 2004 10:05 am Post subject:

Kolusu wrote

vjpilp · Beginner Joined: 01 May 2004 Posts: 8 Topics: 2

I am trying to concatenate a dataset of LRECL 80 with a TEMP dataset of LRECL 160 which I finally use to write to a FLAT FILE. The output file however contains NULLS i.e. X'00' after position 80. I have to remove these NULLS and replace them with space. How do I do this?

I tried OUTREC FIELDS=(1,80,1,81:80X) but my output file had all spaces!

Frank Yaeger · Posted: Sat May 01, 2004 5:04 pm Post subject:

The OUTREC statement you show is invalid. DFSORT would give you a syntax error:

vjpilp · Beginner Joined: 01 May 2004 Posts: 8 Topics: 2

Thanks, I corrected the syntax error in the control card. What I meant by my output file had all spaces was that I did not see the data I expected. Instead it had spaces on each and every record.