How to increase file length in the application server

Hi,

When writing the file in the application server the data is taking upto 255 characters only after that it is truncating.

I am using OPEN DATASET .

Upto internal table I can able to get full length record and after that when wrting into file it is taking upto 255 characters only.

How can I increse the length in the file so data cannot be truncated?

Thanks and Regards,

Ganesh