Yesterday I made NSFDB2 working on my test servers. I had this strange errormessage: "Error managing DB2 groups....DB2 Authorization violation" when I tried to compact a database to DB2.
I did the installation 3 or 4 times. DB2 enable ran successfull but compacting never succeeded. After checking every parameter several times I found the mistake. I entered a path for the "DB2 datastore directory". When I removed the entry for this field, compacting ran without issues.