JTS specifies the implementation of a transaction manager that supports the following:

• JTA specifications, at a high level
• Java mapping of the Object Management Group (OMG), and Object Transaction Service (OTS) specification at a low level

When the transaction manager works in JTS mode, the data is shared by sending Common Object Request Broker Architecture (CORBA) messages, and the transaction context is transferred by Internet Inter-ORB Protocol (IIOP) calls.

This method is less portable due to interoperability with external, third-party ORB issues. Different application server implementations may be unable to distribute transactions between themselves when using this technology.