PL/SQL :: Sys_refcursor Spawning Maximum Threads

i have a procedure which outputs 10 refcursors. It is called called by a .NET utility which then writes the data to 18 different flat files. The proc is of below format

CREATE OR REPLACE PROCEDURE FILE_EXTRACT
(OUTREC1 OUT SYS_REFCURSOR,
OUTREC2 OUT SYS_REFCURSOR,)
AS
BEGIN
OPEN OUTREC1 FOR
SELECT /*+PARALLEL(A,8)*/
COL1,COL2
FROM TABLE A;
 [code]....

 I have used parallel hint because all the tables used in the queries a huge tables and this is a nightly batch job. The issue here is that i have expected oracle to use 8 processes for this execution so all my select statements have parallel hint with degree 8 , but unusaully the procedure is erroring out on production databases because of maximum number of connections are being spawned and the database is not able to create any new session.  When i debuged and did a quick test proc where i used only one out refcursor it ran only 9 threads . then i ran by adding one more out ref cursor it spawn 17 threads. I think its the way .NET is fetching data from each of these cursors.When i print the first refcursor i do see queries which are running for the second along with the first causing the parallel queries run more than expected. The cause of the problem here is all the refcursors are executed and waiting to return data. SO when .net starts reading first cursor the other queries also run.