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murali · Beginner Joined: 21 Apr 2004 Posts: 12 Topics: 9

i have a big file with laks of records and i want to update only a few records which starts policy3. and the other records should not be touched.i do not want another output file. can this be done?

murali

kolusu · Posted: Wed Aug 11, 2004 5:56 am Post subject:

Murali,

Updating a file in place will result in a loss of data, if your pgm abends. So you need to have a backup of your file before running this pgm.

I am assuming that your policy3 field starts at pos 1 and you want to update a field which is in the 30th byte for a length of 20 bytes. Notice that the same input file is used on both infile and fileout.

souvik_225 · Posted: Wed Aug 11, 2004 6:01 am Post subject:

Use the UPDATE in file definition, use SEARCH to locate the records and WRITE to rewrite the records.
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Souvik Upadhyay

kolusu · Posted: Wed Aug 11, 2004 6:35 am Post subject:

souvik_225,

The UPDATE with WRITE option is valid only for VSAM files. But the code I have shown updates a reqular sequential file.

Kolusu
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souvik_225 · Posted: Wed Aug 11, 2004 6:51 am Post subject:

Kolusu,
Sorry , I overlooked in my manual that WRITE is for VSAM. Embarassed

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Thanks and Regards,
Souvik Upadhyay

murali · Beginner Joined: 21 Apr 2004 Posts: 12 Topics: 9

thanks kolusu it worked