I find this script very handy for bouncing the Apache, specially when working on Self Service Applications.
Please find the two commands that I use for bouncing the Apache
Of course this needs to be done in Middle Tier of Oracle Applications.
In case you have modified any java or class file in OAF ( Oracle Applications Framework ), then Apache bounce becomes mandatory for those changes to take effect.
In case you modify and load the XML Document in Oracle Framework, then it is noticed, for those XML changes to take effect, complete bounce of Middle Tier is required in Oracle Apps.