Not writing to OUTPUT FILE(output file empty)

kumar1234

Hi,

I have a program which reads number of input files and writes it in an output file.

I compiled the prog and then ran it, I got the required output in the output file.
Then again i ran the prog and the job went fine but nothing is written to the output file.
My sysout is showing 100 records read but records written showing 0.
Can anyone let me know what could be the possible reasons for this problem.

Thanks,

Craq Giegerich · Posted: Tue Mar 04, 2008 8:14 pm Post subject:

Logic error.

Bitneuker · Posted: Wed Mar 05, 2008 1:08 am Post subject:

disp=new?

Anuj D. · Posted: Wed Mar 05, 2008 1:35 am Post subject:

Hi,

Without knowing what the progrm is doing, no one here, at least me cann't predict why the output is empty in 'second' run. As Craq said, logical error.

Did You use the same input file in both the runs? Just another guess.

Phrzby Phil · Posted: Wed Mar 05, 2008 2:04 am Post subject:

Try a DISPLAY before each WRITE.

Craq Giegerich · Posted: Wed Mar 05, 2008 2:07 am Post subject:

Does the file have a file status and is it being checked after each write?

Bitneuker · Posted: Wed Mar 05, 2008 2:24 am Post subject:

Give us information.........

kumar1234

The output file is having Disp=(,catlg,catlg). And the file is having a file status but we are not checking after every write.

This is what is displayed in my sysout after the successful execution of the prog

PROGRAM B8628800 : SUCCESSFUL EXECUTION
# 02 SEGMENT RECORDS READ: 0441083
# 45 SEGMENT RECORDS READ: 0006441
# TOTAL RECORDS READ : 0022291093
# RECORDS WROTE TO FILE : 0000000

kumar1234

Yes I used the same input files for both the runs.

kumar1234

I tried giving display after each write and then run the prog. But this display does not come in the sysout. I think there is some problem somewhere near write.
Any other suggestions ? please.

raak · Posted: Wed Mar 05, 2008 1:53 pm Post subject:

Give us some details of ur input and output file.
Is any file opened in I-O mode?

kumar1234

There around 7 input files and 1 output file. And there is one input file which is in I/O mode.......

raak · Posted: Wed Mar 05, 2008 3:07 pm Post subject:

See whether after contents of I/O file is getting chaged after ur first run.

I am thinking of some scenario in which the content of I/O mode is used to set some switch and once successfully processed the contents of I/O file are overwritten. So when the program enters the second time, the same situation might not exist as the first time ( due to change in contents of I/O file)

anyway its just a guess.. happy researching

raak · Posted: Wed Mar 05, 2008 3:10 pm Post subject:

If all the other input files are same, then I guess the I/O file might be the reason for change in processing.

Try to find out the purpose of using that file in the program...

and do tell us ur findings alsoo

Purnendu.it · New User Joined: 11 May 2007 Posts: 40 Location: chennai