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DFSORT to Update a VSAM file using Flat file


IBM Mainframe Forums -> DFSORT/ICETOOL
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magesh23586

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Joined: 06 Jul 2009
Posts: 213
Location: Chennai

PostPosted: Fri Nov 22, 2013 11:44 pm
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Hi,

I need to update a VSAM file using a Flat file.

File1 FLAT
FILE2 VSAM KSDS

File 1
Code:

                   
 <---CMP------> <F1--> <F2--> <F3--> <F4------> <F5------>
 ----+----1----+----2----+----3----+----4----+----5----+--
 AAA DDDD 52549 0.5000 0.5000 0.4500 0002165.00 0002165.00
 BBB BDDD 52717 0.5000 0.5000 0.4500 0002175.00 0002175.00


File 2 layout for same Fields
Code:

Field  -PICTURE- -NUMBER START     END  LENGTH
CMP   X(12)        1      1       12        12
F1    S9V9(4)      209    115     117       3
F2    S9V9(4)      257    315     317       3
F3    S9V9(4)      257    315     317       3
F4    S9(7)V99     210    118     122       5
F5    S9(7)V99     259    321     325       5


I need to compare the CMP field in File1 and File2, for the matching record i need to update the VSAM file with the flat file F1, F2 ,F3, F4 and F5

The problem for the Flat file, it is in ZD and for the VSAM file it is in Packed decimal COMP - 3.

Tried with Joinkey By keeping a vsam copy as i dont know how to compare and update a vsam file, also i am struggling how to move ZD to PD icon_sad.gif
Code:

//S1   EXEC  PGM=SORT                                           
//SYSOUT DD SYSOUT=*                                             
//SORTJNF1 DD DSN=F1,DISP=SHR         
//SORTJNF2 DD DSN=VSAMFile,DISP=SHR           
//SORTOUT DD DSN=VSAMFILECPY,DISP=OLD             
//SYSIN DD *                                                     
* CONTROL STATEMENTS FOR JOINKEYS APPLICATION                   
   JOINKEYS FILE=F1,FIELDS=(1,3,A,5,4,A,10,5,A)                 
   JOINKEYS FILE=F2,FIELDS=(1,3,A,4,4,A,8,5,A)  ==Need advice                 
            TYPE=V
  REFORMAT FIELDS=Need advice
* CONTROL STATEMENTS FOR MAIN TASK (JOINED RECORDS)             
   SORT FIELDS=COPY                                             
/*     
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dick scherrer

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Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix

PostPosted: Sat Nov 23, 2013 12:55 am
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Hello,

First - do NOT update one of the input files as the output . . . VSAM or Other.

Your input values are Not zoned-decimal (ZD).Can any of the input values be negative?

If you combine all of the key fields into one 12-byte field, the "match" need only know one field.

Is the vsam file in order by these 12 bytes? Is the input in order?
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magesh23586

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Joined: 06 Jul 2009
Posts: 213
Location: Chennai

PostPosted: Sat Nov 23, 2013 2:10 am
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Hi dick,

i am not using same vsam file, i took a copy.
values might be negatives, the target field is signed

both files may not be in order.

vsam file key size 27
.
and we have only partial key to compare.

we need to update only the matching records, rest of the records in vsam file just needs to be copied.

i.e matching records should have the update of file 1.rest of the records from file 2 vsam, just needs to be copied.
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Bill Woodger

Moderator Emeritus


Joined: 09 Mar 2011
Posts: 7309
Location: Inside the Matrix

PostPosted: Sat Nov 23, 2013 3:34 pm
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As Dick has said, you don't have ZD. Try with FS for your format,

Code:
81,7,FS,TO=PD,LENGTH=3


That your get " 0.1234" (actial decimal point, blank leading sign (example)) at position 81 into PIC S9V9(4) COMP-3.

You'll have to explain about the partial key you mention. Are you talking about the VSAM key, or the JOiNKEYS key?

If the JOINKEYS puts the VSAM data out of sequence (not a problem if it is the high-order part of the key being matched, but then your data from the VSAM is in sequence, and you've said it is not) you will need to SORT in the Main Task.

You will need a JOIN.

Code:
  JOIN UNPAIRED,F1


Can you get unpaired F2? What do you want to do with them if you can?

Your REFORMAT will contain the enire VSAM record, plus the matching fields. In the Main Task, check for a match, do the replacement.
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