SET CONNECT ───┬─> connection-name ─┬───>
                 └─> typebox (D)typebox (E)Ftypebox (A)typebox (U)typebox (L)typebox (T) ─────────┘
 SET CONNECT selects the named connection from the available
 connections, suspends any current session and saves its context,
 and uses the named connection in subsequent procedures in the
 application after the SET CONNECT statement executes.