SQL CallableStatement execute and close

From: guy (guymeital2_at_walla.co.il)
Date: 03/16/04 

Date: 16 Mar 2004 05:48:45 -0800

If I'm using the close() method after executing a callableStatement.
I need to activate the procedure in a predefined interval.
two questions:
1. can I execute the statement again without building it all over again?
2. Does it make any difference (performance wise)?