Question

I had to modify an existing constraint so it would cascade updates and deletes.
To do this I first removed the constraint and was planning on adding it (through an ALTER TABLE) but this fails.

When I commit the query below it gives me the error ‘ORA-01735: invalid ALTER TABLE option‘:

ALTER TABLE 
    PARAM 
ADD CONSTRAINT 
    FK_PARAM_PORTLET FOREIGN KEY (PORTLETID) 
REFERENCES PORTLET(ID) 
ON DELETE CASCADE ON UPDATE CASCADE;

Any idea what it could be? Am I overlooking something?

Answer 1

Oracle does not support ON UPDATE CASCADE in foreign keys.

Have a look at this question for tips: How to create a Foreign Key with "ON UPDATE CASCADE" on Oracle?