Oracle WebLogic Server 12c: Administration I — Question 39

The development group supplied you with the latest WAR file for the company web application. It has been thoroughly tested and needs to be placed into production. In the production file system, you copy over the previous WAR file with the new version. You log into the administration console and redeploy the application. Current uses continue to access the older version of the application, while new users are taken to the new version. Explain this scenario.

Answer options

• A. This is only possible if the application is deployed to a cluster. Cluster deployments allow current users to continue to use the previous version of an application
• B. This is possible if the application is versioned by using the WebLogic Server feature called Production Redeployment.
• C. This is not possible. When an application is redeployed, it replaces the old version and all users then access the new version
• D. This is not possible. When an application is redeployed, all users continue to access the old version. Once all current users have exited the system, then all users from that point on access the new version

Correct answer: B

Explanation

The correct answer is B because Production Redeployment in WebLogic Server allows for a seamless transition where current users can continue using the old version while new users access the updated version. Option A is incorrect as cluster deployments are not a requirement for this functionality. Options C and D are incorrect because they imply that all users must immediately switch to the new version upon redeployment.