The Alfresco Process Services Administrator is distributed as a WAR (Web Application ARchive) file that can be dropped in any Java web container.
Drop the activiti-admin.war file into the web container and start the web container.
To make the application use your database, you must do the following:
Copy the correct JDBC database driver to the classpath of the web application.
Create a property file called activiti-admin.properties and make sure it is on the classpath of the web application. The properties must point to the correct environment settings. If no properties file is found on the classpath, then the WEB-INF/classes/META-INF/activiti-admin file is used by default.