Correct Answer: CD

Note:

* Rolling Upgrade is the process of upgrading a running WebLogic Server cluster with a patch, maintenance pack, or minor release without shutting down the entire cluster or domain. During the rolling upgrade of a cluster, each server in the cluster is individually upgraded and restarted while the other servers in the cluster continue to host your application.

Correct Answer: C

The Clone WebLogic Domain option launches a wizard that enables you to clone a WebLogic Domain from an existing reference domain that is already discovered with Cloud Control. It allows you to clone the Middleware Home and its binaries, and the domain configuration.

* If you selected the Cloning a WebLogic Domain option, the Middleware Provisioning: Domain Configuration page appears. This page contains a set of links to several pages where you can enter the properties that are most likely to be reconfigured like domain name, listen addresses for the administration server and managed servers, Node Manager/Machine configuration, and JDBC data sources.

Correct Answer: ABD

A: You can enable JFR at runtime to take JRA recordings from the JRockit Management Console. You also have the option of turning off the JFR and recordings at the JRockit JVM level from the java command line using:

$ java -XX:-FlightRecorder

B:

*

In most environments, there is little performance impact when the Diagnostic Volume is set to Low and

the most performance impact if Diagnostic Volume is set to High. The volume of diagnostic data produced

by WebLogic Server needs to be weighed against potential performance loss.

*

WLDF provides the Diagnostic Volume attribute to set the amount of code coverage that is enabled and

the amount of data provided in the events that are generated for the covered code The following code

example sets the volume to Medium:

. . .

connect()

edit()

startEdit()

cd("Servers/myserver")

cd("ServerDiagnosticConfig")

cd("myserver")

cmo.setWLDFDiagnosticVolume("Medium")

save()

activate()

D: Integrated with the WebLogic Diagnostic Image and Watch and Notification system

· Enables capture based on system state, event capture during event; no need to replicate · Watch for

stuck thread count, heap size increase, available memory, etc.

· Set up notifications: capture WLDF image

· Diagnostic image capture spurs JFR file generation; JFR file included in diagnostic image · Includes full

JFR data from all event generators

Note:

* WebLogic Diagnostic Framework (WLDF) provides specific integration points with JRockit Mission Control Flight Recorder. WebLogic Server events are propagated to the Flight Recorder for inclusion in a common data set for runtime or post-incident analysis.

Reference: Oracle Fusion Middleware Performance and Tuning for Oracle WebLogic Server, Tuning WebLogic Diagnostic Framework and JRockit Flight Recorder Integration

Reference: JRockit Flight Recorder and WebLogic Diagnostic FrameWork (WLDF) Integration

Correct Answer: C

*

Built on top of Oracle Coherence (Coherence), Coherence*Web: / brings Coherence data grid's data scalability, availability, reliability, and performance to in- memory session management and storage. / can be deployed to many mainstream application servers such as Oracle GlassFish Server, Oracle WebLogic Server, IBM WebSphere, Tomcat, and so on

*

Coherence*Web enables HTTP session sharing and management across different Web applications, domains, and heterogeneous application servers. Session data can be stored in data caches outside of the application server, thus freeing application server heap space and enabling server restarts without losing session data.

Incorrect:

A: No such thing Oracle Web Grid

C: Grid Edition licensing includes the unlimited use of Real Time Clients which may be of the following two types: Real Time Cluster Member Client Real Time Extend/TCP Client Reference: Oracle Coherence User's Guide for Oracle Coherence*Web

Correct Answer: ADE

D: auto-kill-if-failed Specifies whether the Node Manager should automatically kill this server (the managed server) if its health state is failed. (Interface=weblogic.management.configuration.ServerMBean Attribute=getAutoKillIfFailed)

When Auto Restart is enabled, Node Manager will try to restart the Managed Server if it crashes or goes down unexpectedly, for instance, as the result of a machine reboot.

E: When Auto Restart is enabled, Node Manager will try to restart the Managed Server if it crashes or goes down unexpectedly, for instance, as the result of a machine reboot.

Reference: Server --> Configuration --> Health Monitoring

Correct Answer: C

You can configure a JDBC TLOG store to persist transaction logs to a database, which provides the following benefits:

*

Leverages replication and HA characteristics of the underlying database.

*

Simplifies disaster recovery by allowing the easy synchronization of the state of the database and TLOGs.

*

Improved Transaction Recovery service migration as the transaction logs to do not need to be migrated (copied) to a new location.

*

You can configure a JDBC TLOG store to persist transaction logs to a database, which allows you to leverage replication and HA characteristics of the underlying database, simplify disaster recovery, and improve Transaction Recovery service migration.

incorrect:

not B: Read-only, One-phase Commit Optimization requires Oracle DB 11.1.0.7.3PSU or above.

Correct Answer: ABC

A: * WLST can connect to individual Managed Servers to retrieve run-time data.

* The WebLogic Diagnostic Framework (WLDF) is a monitoring and diagnostic framework that can collect

diagnostic data that servers and applications generate. You configure WLDF to collect the data and store it

in various sources, including log records, data events, and harvested metrics.

B: WLST Online Sample Scripts example scripts include:

cluster_creation.py

Connects WLST to an Administration Server, starts an edit session, and creates 10 Managed Servers. It

then creates two clusters, assigns servers to each cluster, and disconnects WLST from the server.

C (not E, not D): You can use WLST to do the following with Node Manager:

*

Start a Node Manager.

*

Connect to a Node Manager, then use the Node Manager to start and stop servers on the Node Manager machine.

Reference; Oracle WebLogic Scripting Tool 12c

Correct Answer: ABE

The WebLogic Server Management Pack EE greatly improves application performance by providing unique functionality to automatically detect performance bottlenecks; quickly diagnose these performance problems, and identify their root cause. Key application performance management features of the pack include the following:

*

(A) Manage multiple farms and WebLogic Domains centrally

*

Monitor Oracle Coherence Cluster including all nodes within a cluster, all caches, services, connection

managers and connections

*

Monitor middleware availability and performance out-of-box; track such data historically, and receive notifications of potential problems

*

Obtain real-time, in-depth JVM diagnostics without instrumentation overhead

*

Trace transactions across containers as well as to the database

*

(E) Analyze call paths and dependencies via graphical, architecture views

*

(E) Automatically discover and model dependencies between Java components, frameworks, and web services

Reference: Weblogic Server Management Pack Enterprise Edition

Correct Answer: BD

D: Elastic message overflow is the ability for WebLogic JMS to take advantage of solid state disks, especially on Exalogic, for paging of JMS messages. This is especially important in spikes of traffic. Access to SSD is much faster than disks or the database, which are used for true persistent storage. This speed of writing and reading enables the system to absorb the spikes in traffic.

Correct Answer: ABCD