Home » Oracle » 1z0-599 » How can you configure High Availability for interacting with a non-Oracle database using WebLogic?
How can you configure High Availability for interacting with a non-Oracle database using WebLogic?
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.
D. Configure a Data Source Group that contains a physical connection pool to each node in the database cluster.
Correct Answer: C
Explanation/Reference:
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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