A number of components have installation-time interdependencies. Problems that affect one component can affect other components. First, you should familiarize yourself with the information in Sun Java Enterprise System 2005Q4 Installation Planning Guide
Review the summary file and log files to see whether related products have failed. These might provide a clue as to what to fix first.
Check that you have specified correct connection information. For example:
Does the information that you provided when configuring Directory Server match the directory information you provided for components that use Directory Server?
Does the Access Manager information that you provided for Portal Server or Portal Server SRA match the information you provided for Access Manager?
In addition to component interdependencies, some components depend on the existence of Solaris packages that might not be installed on the host, and their absence could cause installation failures. Read the “Software Requirements” section of the Release Notes for details.