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Connect to Oracle Data from a Connection Pool in Jetty

The Oracle JDBC Driver supports connection pooling: This article shows how to connect faster to Oracle data from Web apps in Jetty.

The CData JDBC driver for Oracle is easy to integrate with Java Web applications. This article shows how to efficiently connect to Oracle data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for Oracle in Jetty.

Configure the JDBC Driver for Salesforce as a JNDI Data Source

Follow the steps below to connect to Salesforce from Jetty.

  1. Enable the JNDI module for your Jetty base. The following command enables JNDI from the command-line:

    java -jar ../start.jar --add-to-startd=jndi
  2. Add the CData and license file, located in the lib subfolder of the installation directory, into the lib subfolder of the context path.
  3. Declare the resource and its scope. Enter the required connection properties in the resource declaration. This example declares the Oracle data source at the level of the Web app, in WEB-INF\jetty-env.xml.

    <Configure id='oracledbdemo' class="org.eclipse.jetty.webapp.WebAppContext"> <New id="oracledbdemo" class="org.eclipse.jetty.plus.jndi.Resource"> <Arg><Ref refid="oracledbdemo"/></Arg> <Arg>jdbc/oracledbdb</Arg> <Arg> <New class="cdata.jdbc.oracleoci.OracleOCIDriver"> <Set name="url">jdbc:oracleoci:</Set> <Set name="User">myuser</Set> <Set name="Password">mypassword</Set> <Set name="Server">localhost</Set> <Set name="Port">1521</Set> </New> </Arg> </New> </Configure>

    To connect to Oracle, you'll first need to update your PATH variable and ensure it contains a folder location that includes the native DLLs. The native DLLs can be found in the lib folder inside the installation directory. Once you've done this, set the following to connect:

    • Port: The port used to connect to the server hosting the Oracle database.
    • User: The user Id provided for authentication with the Oracle database.
    • Password: The password provided for authentication with the Oracle database.
    • Service Name: The service name of the Oracle database.
  4. Configure the resource in the Web.xml:

    jdbc/oracledbdb javax.sql.DataSource Container
  5. You can then access Oracle with a lookup to java:comp/env/jdbc/oracledbdb: InitialContext ctx = new InitialContext(); DataSource myoracledb = (DataSource)ctx.lookup("java:comp/env/jdbc/oracledbdb");

More Jetty Integration

The steps above show how to configure the driver in a simple connection pooling scenario. For more use cases and information, see the Working with Jetty JNDI chapter in the Jetty documentation.