Oracle and Foreign Key

In oracle exist ON UPDATE clause in Foreign Key syntax? I've write:

...

	 CONSTRAINT "MALATTIE_SINTOMI_FK2"
           FOREIGN KEY ("ID_SIN")
	   REFERENCES  "SINTOMO" ("ID_SIN")
           ON DELETE SET NULL
           ***
                 ENABLE

at place of ***, I've tried to write ON UPDATE CASCADE, but code go in error.
It is possible that Oracle don't support ON UPDATE clause in FOREIGN KEY? Received on Sat Dec 16 2006 - 08:31:58 CST