Hello Informix gurus,

Here is what I intend to do. Please check and tell me that if my way is correct or not.

We have Informix 9.21, hp-ux 11.00

I want to backup the database online with onbar utility, while users are inserting, deleting and reporting the database tables. Our database is in on-line mode. Currently LTAPEDEV=/dev/null

My Steps:
1) I will install Legato Networker Client and networker module for Informix
2) I will not backup logical logs
3) It means, I will take a whole-system backup (onbar -b -w)

My question is that, while my database is online and in use by users, can I have a whole-system backup without really backing up the logical logs by setting the
LTAPEDEV=/dev/null

My concerns are: After all logs is filled, will my database hang? If yes, will I be able to cancel my backup and what will I have to do after I
cancel.

Thanks in advance
ZY

We uses IDS7.31 and Legato Networker.
I thought this :
onbar -b -w will uses only TAPEDEV, this backup your whole database including logical logs.
onbar -l will uses LTAPEDEV.
If you select ALARMPROGRAM=/usr/informix/etc/no_log.sh, what means no logical log backup than will your db hangs when all you logs are consumed and you will have to make a full backup or launch "onbar -l". Else you still hangs.
If you select ALARMPROGRAM=/usr/informix/etc/log_full.sh, what means that the logical logs will be backup then onbar -l will be launched.
With LTAPEDEV /dev/null the logical logs will be send to /dev/null only with "onbar -l".
I made an IDS instance for such experiments.
LTAPEDEV you can change while IDS is running.