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.
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 highavailability 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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