This figure includes a rectangle on the left labeled "Oracle WebLogic Server" at the top. The "Oracle WebLogic Server" rectangle includes a rectangle inside it labeled "SOA Infrastructure JEE app" at the top. Inside the "SOA Infrastructure JEE app" rectangle is another rectangle labeled "BPEL Engine" at the top. Inside the "BPEL Engine" rectangle are three rectangles organized vertically. The labels for these three rectangles, starting from the top rectangle, are:

The space between the Dispatcher Processing rectangle and the Process Persistence rectangle is labeled "In-memory queue."

To the right of and outside of the WebLogic Server rectangle are five other rectangles organized vertically.

Here are the key points about these five other rectangles, starting from the top rectangle: