I’m unclear if Partner Manager (wMPartner package) is required to use the SAP R/3 4.6 adapter in IS 6.0.1? Looks like you need it for sending/receiving IDOCs over tRFC. Also, if required, does the Message Store it uses need to be a JDBC-compliant db or can the file system be used?
wMPartner is required as I found out when accidentally I didn’t installed it and problems sprung promptly
I would be speculating if I told you why it is required.
As for the Message Store, I can only assure you than when you’re using RFC/BAPI capabilities you do NOT need to use a JDBC-compliant db.
Hope this helps