Set the HTTP "Duration" appropriately for each server.
(1) seconds
(1) via the Administration Console, Domain > Environment > Servers > Server Name > Protocols > HTTP . HTTP Duration Field
Oracle�� Fusion Middleware Administrator's Guide for Oracle HTTP Server
11g Release 1 (11.1.1); See Introduction to Oracle HTTP Server; http://download.oracle.com/docs/cd/E12839_01/web.1111/e10144/intro_ohs.htm#HSADM101
Various
Various
Various