Scott,

> My question is will that (/BACKUPINCR)
> just get the transaction logs or both database and transaction logs
> and should I use the /TRUNCAFTER switch?

The /BACKUPINCR command does a backup of transaction logs only.  Please get
the PTF 1
level of the User's Guide as that now includes a discussion of backup
strategies which includes
considerations for truncation of the logs.   This discussion is in chapter
1.

Chris Zaremba
ADSM Agent Development
internet  zaremba AT us.ibm DOT com