1Z0-599 practice question 11 of 15

How can you configure High Availability for interacting with a non-Oracle database using WebLogic?

Answer options

A: Configure multiple physical data sources and reuse the same JNDI name for each.

B: Use the "compatibility" option of Active GridLink to enable compatibility with non-Oracle databases.

C: Configure a single physical data source for each node in a database cluster and wrap it using Multi Data Source. Correct answer

D: Configure a Data Source Group that contains a physical connection pool to each node in the database cluster.

Correct Answer:

C. Configure a single physical data source for each node in a database cluster and wrap it using Multi Data Source.

Explanation

Note:
* A multi data source can be thought of as a pool of data sources. Multi data sources are best used for failover or load balancing between nodes of a highly available database system, such as redundant databases or Oracle Real Application Clusters (Oracle RAC).
* (not B) A single GridLink data source provides connectivity between WebLogic Server and an Oracle Database service, which may include multiple Oracle RAC clusters
* High Availability Storage Solutions If you have applications that need access to persistent stores that reside on remote machines after the migration of a JMS server or JTA transaction log, then you should implement one of the following highly-available storage solutions: / File-based stores (default or custom)—Implement a hardware solution, such as a dual-ported SCSI disk or Storage Area Network (SAN) to make a file store available from shareable disks or remote machines. / JDBC-accessible stores—Configure a JDBC store or JDBC TLOG store and use JDBC to access this store, which can be on yet another server. Applications can then take advantage of any high- availability or failover solutions offered by your database vendor. In addition, JDBC stores support GridLink data sources and multi data sources, which provide failover between nodes of a highly available database system, such as Oracle Real Application Clusters (Oracle RAC).
Reference: Oracle Fusion Middleware Configuring Server Environments for Oracle WebLogic Server 12c, High Availability Storage Solutions

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