automating tbtape on Informix V5

I'm trying to automate the backup of an Informix database of around 10 GB to files. All I seem to have is tbtape (some external reasons involved) Right now it chokes with an error 32 and dd: 0511-065 Requested a write of 4096 bytes, but wrote on 3584. Anyway, I want to be able to automatically, i.e. not have to hit enter etc, and be able to redirect each section of the backup to a different file. So far I don't see how to do it. Does someone have a modified version of tbtape or a good wrapper that would allow me to detect end-of-tape/file so that I can execute a shell script to point to another file then tell tbtape to carry on etc? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dana Lloyd (316)663-8657 danal@austin.ibm.com AIX Solutions Engineer T/L 762-0002 DANAL AT AUSTIN IBM Austin, Texas USA AUSVM6(DANAL)