Changing the HTTP plug-in configuration
You can change the HTTP plug-in configuration without having to stop the server and start it again.
About this task
Restriction: The hot deployment and
dynamic reloading function is not supported when the product is running
on these operating systems. The Java archive (JAR) files within the
associated Java Development Kit (JDK) are memory mapped. If these
JAR files are updated by the hot deployment and dynamic reloading
functionality when they are being used by the Java virtual machine
(JVM), the files become inconsistent, which results in an application
server crash. When you make changes to an application on these operating
systems, do not use the hot deployment and dynamic reloading functionality.
Instead, restart the application to reflect the changes.
There are several change that you can make to the HTTP plug-in configuration without stopping the server and starting it again.
Important: See Ways to update enterprise application files and
determine whether hot deployment is the appropriate way for you to
update your HTTP plug-in configuration. Other ways are easier and
hot deployment is appropriate only for experienced users.
The following table lists the changes that you can make to the HTTP plug-in configuration. The table also states whether you use hot deployment or dynamic reloading to make the changes.
Change | Hot deployment | Dynamic reloading |
---|---|---|
Change the application.xml file to change the context root of a web application archive (WAR file). | Yes | No |
Change the web.xml file to add, remove, or modify a servlet mapping. | Yes | Yes |
Change the server.xml file to add, remove, or modify an HTTP transport or change the virtualhost.xml file to add or remove a virtual host or to add, remove, or modify a virtual host alias. | Yes | Yes |
Avoid trouble: The following steps reference the
GenPluginCfg.bat/sh script. You must delete the
plugin-cfg.xml file in the profile_root/config/cells directory before you use
the GenPluginCfg.bat/sh script. Otherwise, configuration changes do not persist
to the plugin-cfg.xml file.