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Get All Oracle WebLogic Server 12c Essentials Exam Questions with Validated Answers
Vendor: | Oracle |
---|---|
Exam Code: | 1Z0-599 |
Exam Name: | Oracle WebLogic Server 12c Essentials |
Exam Questions: | 90 |
Last Updated: | October 7, 2025 |
Related Certifications: | Oracle Java, Oracle Partner Network |
Exam Tags: | Foundational level WebLogic Server administrators |
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In WebLogic 10.3.6 and 12c, transaction logs can optionally write to a JDBC store instead of a file store on the file system. Identify the three benefits as a result of this capability.
Comparing File Stores and JDBC-accessible Stores
The following are some similarities and differences between file stores and JDBC-accessible stores:
* (A) JDBC stores may make it easier to handle failure recovery since the JDBC interface can access the database from any machine on the same network. With the file store, the disk must be shared or migrated.
* The default persistent store can only be a file store. Therefore, a JDBC store cannot be used as a default persistent store.
* Both have the same transaction semantics and guarantees. As with JDBC store writes, file store writes are guaranteed to be persisted to disk and are not simply left in an intermediate (that is, unsafe) cache.
* Both have the same application interface (no difference in application code).
* (not B, not E) All things being equal, file stores generally offer better throughput than a JDBC store.
/ If a database is running on high-end hardware with very fast disks, and WebLogic Server is running on slower hardware or with slower disks, then you may get better performance from the JDBC store.
* File stores are generally easier to configure and administer, and do not require that WebLogic subsystems depend on any external component.
* File stores generate no network traffic; whereas, JDBC stores generate network traffic if the database is on a different machine from WebLogic Server.
Which feature is enabled when you start a WebLogic server with the --DserverType=wlx option?
-DserverType={'wls' | 'wlx'}
Specifies the Server Type, which determines the set of services that are started in the server runtime.
The default is 'wls', which starts all WebLogic Server services, including EJB, JMS, Connector, Clustering, Deployment, and Management.
The 'wlx' option starts a server instance that excludes the following services, making for a lighter weight runtime footprint:
* (not D) Enterprise JavaBeans (EJB)
* (not B, not E) Java EE Connecter Architecture (JCA)
* (not C) Java Message Service (JMS)
Identify four features of WebLogic that provide value above and beyond a simple Java EE container.
B: Java EE Enterprise Web Services is supported.
E: New or enhanced WebLogic 12c features include
JAVA EE 6 support all kinds of JEE6 specifications are implemented like :
JSF 2.0,Java Servlets 3.0 JPA 2.0 and EJB 3.1.
Managed Beans 1.0
F: WebLogic 12c also supports supports Java SE 7 (and Java SE 6).
Java language optimizations and Internationalization
Client and server support
SSL/TLS 1.2 in JSSE to support JAVA Socket Transport security
Converged Java VM:JRockit and HotSpot are incorporated with the best features from both. Oracle's Publisher Seminar 2011 during OOW
Incorrect:
not C:
You want to capture WebLogic internal events correlated with JVM events for viewing offline. What three actions must you take to enable this within WebLogic?
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 theDiagnostic Volumeattribute 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 toMedium:
. . .
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.
A customer needs to ensure that the number of threads servicing an application does not exceed the number of database connections available to the application.
What step must you take to address this situation?
To manage work in your applications, you define one or more of the following Work Manager components:
Fair Share Request Class:
Response Time Request Class:
Min Threads Constraint:
Max Threads Constraint:
Capacity Constraint
Context Request Class:
Note:
* max-threads-constraint---This constraint limits the number of concurrent threads executing requests from the constrained work set. The default is unlimited. For example, consider a constraint defined with maximum threads of 10 and shared by 3 entry points. The scheduling logic ensures that not more than 10 threads are executing requests from the three entry points combined.
A max-threads-constraint can be defined in terms of a the availability of resource that requests depend upon, such as a connection pool.
A max-threads-constraint might, but does not necessarily, prevent a request class from taking its fair share of threads or meeting its response time goal. Once the constraint is reached the server does not schedule requests of this type until the number of concurrent executions falls below the limit. The server then schedules work based on the fair share or response time goal.
* WebLogic Server prioritizes work and allocates threads based on an execution model that takes into account administrator-defined parameters and actual run-time performance and throughput.
Administrators can configure a set of scheduling guidelines and associate them with one or more applications, or with particular application components.
* WebLogic Server uses a single thread pool, in which all types of work are executed. WebLogic Server prioritizes work based on rules you define, and run-time metrics, including the actual time it takes to execute a request and the rate at which requests are entering and leaving the pool.
The common thread pool changes its size automatically to maximize throughput. The queue monitors throughput over time and based on history, determines whether to adjust the thread count. For example, if historical throughput statistics indicate that a higher thread count increased throughput, WebLogic increases the thread count. Similarly, if statistics indicate that fewer threads did not reduce throughput, WebLogic decreases the thread count. This new strategy makes it easier for administrators to allocate processing resources and manage performance, avoiding the effort and complexity involved in configuring, monitoring, and tuning custom executes queues.
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