Hi,
You can change logging mode, depending of Informix version.
Please test run ondblog <new mode> [-f <filename>] [<database list>]
new mode:
buf - Change database to buffered mode.
unbuf - Change database to unbuffered mode.
nolog - Change database to no logging.
ansi - Change database to be ANSI-compliant
cancel - Cancel logging request.
Then ondblog nolog, press <Enter>. Next onbar -b -F.
Gustavo.