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How to deploy a code with out down the other application

Posted on 2011-09-12
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Hi ,

 in tomcat 5.5 i have deployed two application i want to deploy the one application with out stop or down the other application how  can i do that ???
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read here:
http://tomcat.apache.org/tomcat-5.5-doc/appdev/deployment.html

the following pararagraph:

Use the Tomcat 5 "Manager" web application to deploy and undeploy web applications. Tomcat 5 includes a web application, deployed by default on context path /manager, that allows you to deploy and undeploy applications on a running Tomcat server without restarting it. See the administrator documentation (TODO: hyperlink) for more information on using the Manager web application.
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This is in the begining of the above quoted page:

In many production environments, it is very useful to have the capability to deploy a new web application, or undeploy an existing one, without having to shut down and restart the entire container. In addition, you can request an existing application to reload itself, even if you have not declared it to be reloadable in the Tomcat 5 server configuration file.


With all those things said, if you really have a lot of clients dependding on the running application(s),
and if the new application was not tested in the similar test envirnment - I'd rather doits deployment in the non-business hours
as many unexpected things may happen.

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