Global Security - Configuring the Security Settings

Turning on WebSphere Application Server for z/OS global security has been described as flipping a big switch and this will impact the behavior of your WebSphere Application Server for z/OS system on z/OS significantly. For this reason it is strongly recommended that you:

Be aware that if you have other applications running on WebSphere Application Server for z/OS, they will be impacted by global security being turned on and may no longer function.