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A customer stores environmental settings in the deployment descriptors of an application. Whenever they promote the application version from testing to the production environment, they need to open the archive and modify the deployment descriptor. This process is against their security policy.
What approach should you recommend to leverage WebLogic features such that they do not have to modify the application archive for different environments?
WebLogic Server uses the standard J2EE web.xml deployment descriptor for defining a Web Application. Some applications also require the WebLogic-specific deployment descriptor, weblogic.xml. You use these deployment descriptors to define components and operating parameters for a Web Application. Deployment descriptors are standard text files, formatted using XML notation. You package them in the Web Application.
Integration between _______ multidata sources and _____ is defined as the Grid Link for RAC.
The WebLogic Server JDBC subsystem has supported Oracle RAC since WLS
particular type of data source configuration, called a multi data source. A multi data
source is a data source abstraction over one or more individual data sources. It
serves JDBC connections from each of the member data sources according to a
specified policy2. A RAC multi data source configuration requires that each
member data source obtain connections to a particular RAC instance, as illustrated
in the following diagram of a three-node RAC cluster configuration.
Which two options best describe how the Maven Plugin for WebLogic enables WebLogic to be effectively used in a Continuous Integration environment?
Note:
* Apache Maven is a software tool for building and managing Java-based projects. WebLogic Server provides support for Maven through the provisioning of plug-ins that enable you to perform various operations on WebLogic Server from within a Maven environment.
* Continuous Integration is a software engineering practice which attempts to improve quality and reduce time to deliver software by applying small, frequent quality control efforts. It is characterized by these key practices:
Use of a version control system
All developers commit to the 'HEAD' (main code line) every day
The product is built on every commit
The build must be automated and fast
Automated deployment to a production-like environment
Automated testing
Results of all builds are published (so everyone can see who broke the build)
Deliverables are easily available (for developers, testers, other stakeholders)
You deploy more than one application to the same WebLogic container. The security is set on JavaEE level and all deployed JavaEE applications use the same security roles.
What is your recommendation for an architecture with those requirement
Note:
* Types of Security Roles: Global Roles and Scoped Roles
There are two types of security roles in WebLogic Server:
/ A global security role can be used in any security policy. Oracle provides several default global roles that you can use out of the box to secure your WebLogic resource
/ A scoped role can be used only in policies that are defined for a specific instance of a WebLogic resource (such as a method on an EJB or a branch of a JNDI tree). You might never need to use scoped roles. They are provided for their flexibility and are an extra feature for advanced customers.
Incorrect:
Not E: Role mapping is the process whereby principals (users or groups) are dynamically mapped to security roles at runtime. In WebLogic Server, a Role Mapping provider determines what security roles apply to the principals stored a subject when the subject is attempting to perform an operation on a WebLogic resource. Because this operation usually involves gaining access to the WebLogic resource, Role Mapping providers are typically used with Authorization providers.
A customer has a web application with HTTP Sessions that need to be replicated to a backup site that is more than 100 miles away from the primary site, connected over the Internet.
Which type of session replication in WebLogic is recommended?
WAN HTTP Session State Replication
Resources in a wide area network (WAN) are frequently spread across separate geographical regions. In addition to requiring network traffic to cross long distances, these resources are often separated by multiple routers and other network bottle necks. Network communication in a WAN generally has higher latency and slower interconnect.
Slower network performance within a WAN makes it difficult to use a synchronous replication mechanism like the one used within a MAN. WebLogic Server provides failover across clusters in WAN by using an asynchronous data replication scheme.
Note:
HTTP Session State Replication
Weblogic Server uses two methods for replicating HTTP session state across clusters:
in-memory replication
* Using in-memory replication, WebLogic Server copies a session state from one server instance to another. The primary server creates a primary session state on the server to which the client first connects, and a secondary replica on another WebLogic Server instance in the cluster. The replica is kept up-to-date so that it may be used if the server that hosts the servlet fails.
* JDBC-based persistence
In JDBC-based persistence, WebLogic Server maintains the HTTP session state of a servlet or JSP using file-based or JDBC-based persistence.
JDBC-based persistence is also used for HTTP session state replication within a Wide Area Network (WAN).
