Comments on: Oracle REF CURSOR and ColdFusion

By: Aruna

Aruna — Tue, 16 Dec 2008 20:03:13 +0000

I want to lock the rows for update, while doing an update from cold fusion. My back end is oracle. Do you know how to use the select for update in procedures that I can call in CF?

By: Jeff Aust

Jeff Aust — Tue, 11 Sep 2007 18:37:15 +0000

Yes, indeed, it was as you recommended. Thanks for the pointer!

Just to add to the note my stored procedure is not contained within a package. Not that I have anything against packages, mind you.

By: Eddie Awad

Eddie Awad — Fri, 07 Sep 2007 23:27:35 +0000

You may have to update the macromedia_drivers.jar file. The following TechNote has more information: http://www.adobe.com/go/42dcb10a

By: Jeff Aust

Jeff Aust — Fri, 07 Sep 2007 20:25:18 +0000

Hmmm? I get the same error as the other Jeff as well. This has been bugging the heck out of me for the past few days because I have a proc I’d like to use in this fashion.

By: Jeff Dugas

Jeff Dugas — Fri, 07 Sep 2007 17:39:05 +0000

Yikes, my CF code got dropped when I posted. No matter, it looked exactly like what you had originally, except I changed the procedure attribute to match the package procedure, used a variable for the DSN, and I wrapped it in a try/catch to dump the exception.

By: Jeff Dugas

Jeff Dugas — Fri, 07 Sep 2007 17:30:42 +0000

I created the package you provided as an example, and used this CF7 code, having provided a value for myDSN elsewhere.

The exception's Detail is: ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'TEST_PROC' ORA-06550: line 1, column 7: PL/SQL: Statement ignored

Adding a cfprocparam tag that defines the output parameter does not fix the problem (it causes Parameter Type Conflict: sqlType=2006).

So, no luck yet. After doing some further reading, I suspect this could be a problem with the driver we're using (Oracle JDBC thin driver).

By: Eddie Awad

Eddie Awad — Fri, 07 Sep 2007 16:35:33 +0000

Yes. In fact, we do that all the time. I'm not sure what you mean by "no luck". Here is an example of a procedure returning a weak ref cursor:

CREATE OR REPLACE PACKAGE test_pkg
AS
   PROCEDURE test_proc (out_cur OUT sys_refcursor);
END;
/

CREATE OR REPLACE PACKAGE BODY test_pkg
AS
   PROCEDURE test_proc (out_cur OUT sys_refcursor)
   AS
   BEGIN
      OPEN out_cur FOR
         SELECT object_id, object_type, object_name
           FROM all_objects
          WHERE ROWNUM <= 15;
   END test_proc;
END test_pkg;
/

you would then use the same ColdFusion code to call the procedure and access its returned query.

By: Jeff Dugas

Jeff Dugas — Fri, 07 Sep 2007 16:10:53 +0000

Is there a way to do the same thing via a stored procedure, returning the ref cursor as an output parameter? I have tried converting this function into a sproc with one output parameter with no luck (using Oracle 10g and CF7).