There's another important bump in 10->11 which removed all of the bundled J2EE, so you have to add external copies of the removed libraries (if they exist; for

There's another important bump in 10->11 which removed all of the bundled J2EE, so you have to add external copies of the removed libraries (if they exist; for instance, IIRC the CORBA stuff was removed without an external alternative). In my experience, these external copies have small subtle differences to the former bundled copy, which can cause some issues; though the biggest issue IMO is to find the correct external library name and version for each bundled J2EE library you depended on (and sometimes even which J2EE libraries you depended on, some things are loaded through reflection so it only fails at runtime).