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Easy Learn Java: Programming Articles, Examples and Tips - Page 306


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uCertify Offers Exam PrepKit for Oracle 9i (1Z0-147) Exam

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uCertify (January 13, 2005) uCertify, a quality solution provider for IT certification exam preparations, released its PrepKit for Oracle certification exam 1Z0-147 exam today. This PrepKit provides comprehensive study material as well as simulation tests for the Oracle exam.

Oracle9i PL/SQL Developer Certified Associate credential is the first step towards the Oracle9i Forms Developer track. The two Exams that are required to pass to get this certification are:

1. 1Z0-007 Introduction to Oracle 9i: SQL

OR

2. 1Z0-001 Introduction to Oracle: SQL and PL/SQL

3. 1Z0-147 Oracle 9i: Program with PL/SQL

The exam IZ0-147 tests the fundamental knowledge and skills of a professional in developing and implementing programs with Oracle 9i: PL/SQL. This certification exam provides an opportunity to Developers to test their skills to act as a functional Oracle 9i developer and get recognition from Oracle, a world leader in RDBM Systems.

The PrepKit has been developed keeping in mind the latest exams trends by Oracle. Additional help to the aspirants has been provided through a plenty of helpful resources like Technical Articles on different important technical topics, Tips and Tricks and Things to practice etc. Tests can be customized according to individual needs, and detailed results of all tests are provided. This helps the aspirants to prepare in an organized way and focus their preparation on their weak areas.

The Exam simulation PrepKit provides the users a total of 150 questions and 80 study notes. Also available is a free downloadable version containing 15 questions and 10 study notes. More information on this exam simulation PrepKit is available at:

http://www.ucertify.com/exams/Oracle/1Z0-147.html

About uCertify

Conceived in 1996, uCertify.com specializes in the development of computer assisted test preparation software. The company provides exam simulation PrepKits for the certification exams of Microsoft, CIW, CompTIA, Oracle, Sun and other leading vendors. The Prepkits are developed after rigorous research and innovation by a panel of highly experienced and certified authors to equip the aspirants with the latest and accurate study material for IT certifications. Learn more about uCertify

Roger Stuart
uCertify

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Posted by Anonymous on Thursday, February 17, 2005 (00:00:00) (3551 reads)

Using JConsole to Monitor Applications

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The Java 2 Platform, Standard Edition (J2SE) 5.0 release provides comprehensive monitoring and management support. It not only defines the management interfaces for the Java virtual machine, but also provides out-of-the-box remote monitoring and management on the Java platform and of applications that run on it. In addition, JDK 5.0 includes the Java Monitoring and Management Console (JConsole) tool.

JConsole is a JMX-compliant GUI tool that connects to a running JVM, which started with the management agent. It uses the extensive instrumentation of the Java virtual machine to provide information on performance and resource consumption of applications running on the Java platform using Java Management Extension (JMX) technology.

Jconsole can connect to a running JVM in 3 different ways:
- local
- remote
- advanced

The article describes how JConsole can be used to observe information about an application running on the Java platform. The article first gives an overview of the J2SE 5.0 monitoring and management architecture and how JConsole plugs into the architecture. It then describes how to use JConsole to access several core monitoring and management functionalities provided by the Java platform including:

* Detect low memory - the Memory tab provides information about memory consumption, memory pools,
and garbage collection statistics by accessing the memory system, memory pools, garbage collector MBeans.
* Enable or disable GC and class loading verbose tracing
* Detect deadlocks - the Threads tab provides information about threads running in an application.
* Control the log level of any loggers in an application
* Access OS resources???Sun's platform extension. The JDK 5.0 extends the Operating System MBean to include certain OS resource information such as:
- the process CPU time
- the amount of total and free physical memory
- the amount of committed virtual memory (that is, the amount of virtual memory guaranteed to be available to the running process)
- the amount of total and free swap space
- the number of open file descriptions (UNIX only)
* Manage an application's Managed Beans (MBeans)
I recommend you to read this excellent overview on JConsole features with screenshots and examples here:
http://java.sun.com/developer/technicalArticles/J2SE/jconsole.html



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Posted by Anonymous on Thursday, February 17, 2005 (00:00:00) (4069 reads)

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