Identity Manager 4.6 supports only Apache Tomcat as an application server. If your company provides a supported version of Tomcat, you can use it with Identity Manager.
Alternatively, NetIQ bundles Tomcat and PostgreSQL in the same installation program for your convenience. This installer lets you install these applications without downloading them separately. NetIQ does not provide updates for these components, or administration, configuration, or tuning information beyond what is outlined in the NetIQ Identity Manager documentation.