![]() ![]() For example, Apache Web Server libraries. If required, obtain latest third party plug-ins or components that are compatible with required non-Oracle components.Back up your applications, database schema, other application data, and domains. ![]() The rolling upgrade process provides you with an option of upgrading a running WebLogic Server cluster without shutting down the entire cluster or domain.īefore you begin the upgrade process, make sure that you take any necessary precautions such as: You can still upgrade to the latest patch using other strategies including bringing applications down in order to perform WebLogic Server upgrades, and restarting applications after WebLogic Server upgrades are complete. You can also uninstall a patch, maintenance pack, or minor release in a rolling fashion. This documentation focuses on installing upgrades in a cluster. Rolling upgrade is most applicable to a cluster of WebLogic Server instances, however, you can also install updates to a domain of Managed Servers that are not in a cluster. ![]() The scope of rolling upgrade support encompasses installation of patches and maintenance packs as they are made available for WebLogic Server 10.x. Support for rolling upgrade was available starting with WebLogic Server 9.2. The rolling upgrade process minimizes downtime and allows you to install a patch, maintenance pack, or minor release while the domain is still running. Prior to the WebLogic Server 9.2 release, to upgrade a cluster, you had to either shutdown the entire domain, or install the upgraded server version on a parallel domain on additional hardware and use a load balancer to transfer load from the old domain to the new domain. During the rolling upgrade of a cluster, each server in the cluster is individually upgraded and restarted while the other servers in the cluster continue to host your application. Rolling Upgrade is the process of upgrading a running WebLogic Server cluster with a patch, maintenance pack, or minor release without shutting down the entire cluster or domain. WebLogic Server Rolling Upgrade Upgrading WebLogic Application Environments ![]()
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