LOG_BACKUP_MODE

onconfig.std value

MANUAL

range of values

CONT = Continuous log backups
MANUAL = Manual log backups
NONE = No log backups

refer to

IBM Informix: Backup and Restore Guide

In Extended Parallel Server, edit your ONCONFIG file to set LOG_BACKUP_MODE. Use of NONE is not recommended because you cannot use ON-Bar to restore if logical-log backups have been disabled.