A box labeled "Custom JDBC Thin Application" is at the top of the diagram. Below this box are the "JDBC Universal Connection Pool" and "WebLogic Server Connection Pool" boxes. Below these is a box labeled "JDBC Replay Driver." Inside this box are two boxes: LTXID (Transaction Guard), and Replay Context. Below this box is a bow labeled "JDBC Driver." Below this box is a box labeled "Database." Inside this box are the boxes Continuity Director, LTXID (Transaction Guard), and Replay Context. These boxes point right to a box labeled "Data Guard." Inside this box is a box labeled "LTXID (Transaction Guard)."