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[itl_srp]

Hi,

This is a bsic doubt I am having -

Say, I am using the following file as an input to my program.

//INSTRD DD DSN=AAAAA.BBBB.CCCCC,DISP=SHR
// DD DSN=XXXXX.YYYY.ZZZZZZ,DISP=SHR

That is, my input file to the program is one which is concatenated by the two files AAAAA.BBBB.CCCCC and XXXXX.YYYY.ZZZZZZ.

Now, say I want to open the file in IO mode. I.e later in my program I want to wrte to the same file which is used as my input. With this intention, I now give the following in my run jcl -

//INSTRD DD DSN=AAAAA.BBBB.CCCCC,DISP=(MOD,CATLG)
// DD DSN=XXXXX.YYYY.ZZZZZZ,DISP=(MOD,CATLG)

My first doubt goes -
1. Can I use this disp at all for my purpose. If not then how should I represent my file which is my input file as well as my output file and the input file is a result of concatenation of two other files. In that case, what should be the name of my physical file.

Second doubt is -

2. When i am writing to this file again in my program, which file physically the records will be written to?

Appreciate any help in this regard.
_________________
Thanks & Regards,
Macs

[Bill Dennis]

OUTPUT concatenations are not allowed. I'm sure you'll get a system ABEND.
_________________
Regards,
Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.

[itl_srp]

Thanks Bill.....but say, I want to know the physical file name of my input file.....
Is there a temp file created as input to my pgm by concatenating the other two files here.....
_________________
Thanks & Regards,
Macs

[Bill Dennis]

No, your input file is still two datasets. There are examples in other posts to find the input file names if you need them in your program.
_________________
Regards,
Bill Dennis

Disclaimer: My comments on this foorum are my own and do not represent the opinions or suggestions of any other person or business entity.

[bablack]

The JCL manual confirms that you cannot concatinate output files