PL/SQL :: Calling Procedure In Loop

I am calling a procedure with the following parameters 

DECLARE     PROFIT_CENTER NUMBER;   BEGIN   PROFIT_CENTER:= 1109 --( Similarly I am running the proc for 5 more profit_centers 1123,1132, 1122,3211, 1111

one by one by passing values manually, it is taking almost a minute for each profit center

)Prc_test_calc (  PROFIT_CENTER);  COMMIT;   END;
For each profit_center proc is taking 1 mins (Approx) time.  

But when I am trying to loop it to call the procedure for each profit_center , I don’t know for what reason it is taking too much time for each profit_center. Anything wrong with the below loop  

DECLARE     PROFIT_CENTER NUMBER;  cursor c_profit is select distinct PROFIT_CENTER from plng_pc where profit_center in (1109, 1123,1132,1122,3211,1111); --

Plng_pc is a table from where profit_center information is getting fetched  

BEGIN For pc_rec in c_profit loop   Prc_test_calc (  pc_rec .PROFIT_CENTER );  COMMIT; End loop;   END;