Oracle WebLogic Server 12c: Advanced Administration II — Question 7

Your organization is using a Multi data source (MDS) on WebLogic Server to support applications connecting to an Oracle RAC database. You have been tasked with configuring a new callback handler for the MDS.
Which two statements are true concerning related MDS options and behavior? (Choose two.)

Answer options

• A. Callback handlers are optional when using the Failover MDS Algorithm.
• B. If the Failover Callback Handler attribute is set on the MDS, the Test Frequency attribute is no longer used.
• C. Callback handlers are called for both failover and failback decisions.
• D. You can register only one callback handler for each WebLogic server.

Correct answer: C, D

Explanation

Option C is correct because callback handlers are indeed invoked for both failover and failback operations, allowing for dynamic management of connections. Option D is also correct since the architecture restricts each WebLogic server to a single callback handler. Options A and B are incorrect as they misrepresent the requirements and behaviors of the Failover MDS Algorithm and the interaction with the Test Frequency attribute.