It is difficult to help you.  Many of us run V4 of TSM and do not have the
messages manual for V3.  The complete message text for the 8337 would be
helpful.  It sounds like it is trying to tell you how the recovery log will
be handled.  Are you sure you have the DEVCONFIG setup correctly for a
restore.  Did you format the files to receive the Database and recovery
logs?  Did you follow the Administrator's Guide for recovery based on your
specific scenario?

I am presuming that you do not have the VOLHISTORY file to work with.  Are
you specifying COMMIT=YES?  See the example command here.

dsmserv restore db devclass=8MM volumenames=tape01,tape02 commit=yes

Are sure the DBBACKUP is on a single tape, that it is not a multi-volume?
Are you positive your DB Backups have been running correctly?

I suspect folks are having trouble helping you without this information.