Java on oracle interview questions and answers

          

Java on oracle interview

Java on oracle interview questions and answers

What is JServer and what is it used for?

Latest answer: JServer is a JVM. Oracle database server’s address space is shared with JServer to run. Oracle provides an Accelerator for JServer to compile the java code natively...............
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How does one connect with the JDBC OCI Driver?

Latest answer: The Oracle OCI driver uses Oracle Call Interface in order to communicate with the database. The following is the connection process for JDBC OCI Driver...............
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What is SQLJ and what is it used for?

Latest answer: SQLJ is a standard from ISO for placing SQL statements in Java programs. SQLJ is not an API ( as JDBC is ). It is an extension to the Java language. Therefore SQLJ programs must run by SQLJ translator which is a preprocessor before they compiled...............
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What is JDeveloper and what is it used for?

Latest answer: JDeveloper is an open source IDE from Oracle. Jdeveloper covers the complete development lifecycle starting from design through coding, debugging to deploying...............
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What is a Java Stored Procedure/ Trigger? 

Latest answer: Java stored procedure a method of java which stored in Oracle Database Lite. This procedure can be accessed by the applications that uses the database...............
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How does one connect with the JDBC KPRB Driver?  

Latest answer: The connection to JDBC KPRB driver is obtained by invoking OracleDriver.defaultConnection () method. Database URL, user name and password need not be specified...............
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Also read:
Java Threading

What is a thread? What are the advantages we derived by programming with thread?
Explain how to create a thread and start it running.
How does thread’s stop method work.
How do we specify pause times in my program?...........

JNDI, Java naming and directory interfaces

What is a naming service?
What is a directory service?
What is LDAP?............

Java applets

What is an applet? How does applet differ from applications?
Explain with an example how we implement an applet into a web page using applet tag.
What are the attributes of Applet tags? Explain the purposes.
How can we determine the width and height of my applet?

EJB Architecture

Briefly describe EJB architecture.
Explain the various services that the EJB container offers to the application developer.
What is the difference between EJB and Java beans?
What’s new in the EJB 2.0 specification?................

J2EE

J2EE Architecture interview questions
J2EE web container interview questions
J2EE Application interview questions

Oracle

Explain Row level and statement level trigger.
What is a JOIN? Explain types of JOIN in oracle.
What is object data type in oracle?
Explain the attributes of implicit cursor.................

Oracle Triggers

What is trigger in oracle?
What are the types of triggers?
How the triggers are attached to the table?...............

Oracle Sub-Queries

Explain sub-queries in brief.
What are the different operators used in building sub queries? ...........

Oracle Architecture

Describe Oracle architecture in brief.
What is the function of SMON?
Explain different types of segment................. 

 
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