We want to backup databases by dbspace in sybase iq15. Has anybody done this before.

We tried to do this by taking a full backup on sunday, and then backing up the readwrite partitions every night with:

backup database readonly files to '/dir/file'.

What is the proper procedure to restore these files if our IQ store gets wiped out ? The manuals are a little light in this area. We tried restoring the full backup and then the 'readonly' but keep getting transaction log errors on startup.

Has anyone had experience restoring from dbspace backups ?