Changing CHOP size limit during DB REORG using SAPDBA

Hi

we are planning to perform a DB reorg using SAPDBA with oracle 8.

Does anyone have experience on changing the chop file size from 2GB to 1GB? Please let me know where to change the chop size in SAPDBA or any parameter file?

pls share your experience on this regard.

regards,

Vinodh.