Upgrading

A Java ES component is upgraded by performing a fresh installation of the component by using the Java ES installer. Perform a fresh installation by first removing the previous version's packages and installing Release 5 in the same path. Alternatively, you can install Release 5 in a parallel path, leaving the previous version intact.

In either case must reconfigure the component by migrating the previous version's configuration data to the new installation, performing a new configuration, or doing a combination of both. For some Java ES components an utility is provided for reconfiguring or migrating configuration data for the component.

Java ES 5 Windows installer does not support in-place upgrade of previous versions of the components. Instead, the installer supports coexistence with Java ES 4. After installing Java ES 5, you need to follow the upgrade procedure described in the Sun Java Enterprise System 5 Upgrade Guide for Microsoft Windows to upgrade Java ES components. Upgrade scenarios for individual components are described in the respective upgrade guides.

When Java ES 5 installation is attempted, the installer first detects the presence of Java ES 4 on the system. On successful detection, the installer checks for pre-existing Java ES 4 shared components in the Windows SYSTEM directory, because these components cause incompatibility issues with Java ES 5. If any of the shared components are being used by Java ES 4 services, you are prompted to stop the running Java ES 4 services.

In addition, the installer automatically renames the Java ES 4 shared components. The renaming information is stored in the installer log file. If you need to start any of the Java ES 4 services, you should restore the names of shared components manually.

Java ES 4 and Java ES 5 servers cannot be started simultaneously.