I had an older setup (when it was still called Backint), and ran the
incremental backups of the SAP system as the last command in the brbackup
script.  Basically the same as you're suggesting with the selective backup,
and it worked.  3 DR tests of this install under our belt, all 3
successful, so it at least works.  I don't know if there's a better way or
not.

Nick Cassimatis
nickpc AT us.ibm DOT com

Today is the tomorrow of yesterday.