1Z0-599 Online Practice Questions and Answers

Correct Answer: C

XA Affinity and Failover When accessed within a global transaction, the member data source from which the JDBC connection was obtained is pinned to the global transaction for the life of the transaction. This ensures that all database operations performed on connections obtained from the Multi Data Source, for a particular transaction, all execute on the same RAC instance. XA affinity results in improved performance and is even a requirement for older versions of RAC, such as prior to 11g. The XA failover is also supported by the Multi Data Source and transaction manager implementations. If a pinned RAC instance suffers a failure, then a global transaction can complete utilizing a different RAC instance using a connection obtained one of the other member data sources.

Reference: Oracle WebLogic Server Active GridLink for Oracle Real Application Clusters(RAC)

Correct Answer: E

Similar to the configuration information, WebLogic Server runtime MBeans are arranged in a hierarchical data structure. When connected to an Administration Server, you access the runtime MBean hierarchy by entering the serverRuntime or the domainRuntime command. The serverRuntime command places WLST at the root of the server runtime management objects, ServerRuntimeMBean; the domainRuntime command, at the root of the domain-wide runtime management objects, DomainRuntimeMBean.

Reference: WebLogic Scripting Tool, Browsing Runtime MBeans

Correct Answer: BD

B: A domain consists of one or more WebLogic Server instances (and their associated resources) that you manage with a single Administration Server.

D: In a domain, server instances other than the Administration Server are referred to as Managed Servers. Managed Servers host the components and associated resources that constitute your applications.

Incorrect:

Not A: Each WebLogic Server domain must have one server instance that acts as the Administration

Server.

Not C: A domain can include multiple WebLogic Server clusters and non-clustered WebLogic Server

instances.

Not E: A Node Manager process is not associated with a specific WebLogic domain but with a machine.

You can use the same Node Manager process to control server instances in any WebLogic Server

domain, as long as the server instances reside on the same machine as the Node Manager process. Node

Manager must run on each computer that hosts WebLogic Server instances--whether Administration

Server or Managed Server--that you want to control with Node Manager.

Reference: Overview of WebLogic Server Domains

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: D

Note:

You can use the 12.1.1 WebLogic Upgrade Wizard to upgrade domains created in WebLogic Server 8.1.

You can also use the WebLogic Upgrade Wizard to upgrade a WebLogic domain created in WebLogic

Server 9.x or 10.x to 12.1.1, but this is optional.

Correct Answer: B

Note:

*

In managing multiple servers, Node Manager uses multiple configuration files and outputs log files to multiple directories.

*

nodemanager.domains This file contains mappings between the names of domains managed by Node Manager and their corresponding directories.

*

Node Manager in the WebLogic Server Environment

Reference; Node Manager Administrator's Guide for Oracle WebLogic Server 12c

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: BE

B: WLST enables you to create a new domain or update an existing domain without connecting to a

running WebLogic Server (that is, using WLST offline)--supporting the same functionality as the

Configuration Wizard.

E: With WLST you can

Creating a Domain (Offline)

Updating an Existing Domain (Offline)

Creating a Domain Template (Offline)

Exporting Diagnostic Data (Offline)

Stepping Through a Sample Script: Creating a Domain Using WLST Offline Reference: Creating and

Configuring WebLogic Domains Using WLST Offline

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