Introduction

When upgrading Java ES Release 4 Web Proxy Server to Release 5, consider the following aspects of the upgrade process:

• General Upgrade Approach. The upgrade is performed using patches. No additional reconfiguration is required.

• Upgrade Dependencies. Web Proxy Server has dependencies on a number of Java ES shared components, as listed in Table 1–7. However Web Proxy Server has hard upgrade dependencies only on NSS and NSPR shared components.

• Backward Compatibility. Release 5 Web Proxy Server is backwardly compatible with Release 4.

• Upgrade Rollback. Release 5 Web Proxy Server upgrade rollback is performed by removing the upgrade patches.