Oracle Java and J2EE

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  • Unable to view Oracle tables in NetBeans

    I am very new to databases (Oracle 9.2 installed) and my problem is I'm not able to view tables in NetBeans 5.5 even after establishing the connection with the database via NetBeans. 

  • Can I make a second connection to Oracle without losing the first?

    Is it possible to have a stored procedure make a second connection to Oracle without losing where you're at in the first connection? 

  • Impact of Oracle 9i upgrade on Java front end

    I am using Java as the front end, so what is the impact of the upgrade? Do I need to upgrade Java versions or ODBC Drivers? 

  • Why isn't Oracle user-friendly?

    Working with SQL Server is simple. Oracle is an enterprise database and powerful but why has it never been user-friendly? 

  • ORA-00904 error on select statement

    I am working in JDEVELOPER using JDBC. This program is working with objects. I am getting this error on a SQL statement: "java.sql.SQLException: ORA-00904: "R": invalid identifier." How do I fix this? It seems like object r is not connected to anythi... 

  • What other certifications will increase my market value?

    I am an Oracle certified DBA, with work experience of more than four years. I want to do some other certifications so that I can increase my market value. 

  • Better performance with varchar2(1) or number(1)?

    Since Oracle table structures do not support a boolean datatype, I am faced with a choice (make it a varchar2(1) or number(1)), with contents of Y,N or 1,0. Which provides better performance? 

  • Developing a performance monitoring tool

    I want to develop a performance monitoring tool for Oracle. What are the important parameters I should consider? This tool must be independent of any platform. Which language would you suggest to use? 

  • ORA-12571 error with Oracle 8i on Windows XP

    I am getting "ORA-12571: TNS:Packet writer failure" when I write tnsping [sid name] in the DOS prompt. I have installed Oracle 8i Enterprise on Win XP. I am able to create the database but unable to connect with Java using Oracle thin drivers... 

  • Problems transferring Oracle data after upgrade to XP

    I am using Oracle E-Business Suite version 11i. Ever since my computer was recently upgraded to Windows XP, I have not been able to transfer any data between Oracle screens using copy and paste, and Oracle screens will not print. When I was in NT, al... 

  • See more Expert Advice on Oracle Java and J2EE
  • JOLAP (Java Online Analytical Processing)

    JOLAP (Java Online Analytical Processing) is a Java application-programming interface (API) for the Java 2 Platform, Enterprise Edition (J2EE) environment that supports the creation, storage, access, and management of data in an online analytical pro... 

  • Java Data Objects (JDO)

    Java Data Objects (JDO) is an application program interface (API) that enables a Java programmer to access a database implicitly - that is, without having to make explicit Structured Query Language (SQL) statements. 

  • JDBC Connector (Java Database Connectivity Connector)

    The JDBC (Java Database Connectivity) Connector is a program that enables various databases to be accessed by Java application servers that are run on the Java 2 Platform, Enterprise Edition (J2EE) from Sun Microsystems. 

  • Java Database Connectivity (JDBC)

    Java Database Connectivity (JDBC) is an application program interface (API) specification for connecting programs written in Java to the data in popular databases. 

  • Open Database Connectivity (ODBC)

    Open Database Connectivity (ODBC) is an open standard application programming interface (API) for accessing a database. 

About Oracle Java and J2EE

Oracle's JDeveloper, TopLink and related J2EE development tools make it a leader in Java development for the enterprise. Browse technical tips, script and expert advice about using Java and J2EE for Oracle application development in this section.