Use PROBKUP to perform either a full or incremental online backup. Run PROBKUP from the operating system prompt. Use the following command:

probkup online db-name device-name [parameters]

By default, PROBKUP performs a full backup. To perform an incremental backup, specify the incremental qualifier:

probkup online db-name incremental device-name[parameters]
Note: Databases started with the No Crash Protection (-i) parameter cannot be backed up online. For databases with after-imaging enabled, online backup will automatically perform an AI extent switch. For more information on after-imaging, see After-imaging.