BEA Logo BEA WebLogic Server Release 5.0

  Corporate Info  |  News  |  Solutions  |  Products  |  Partners  |  Services  |  Events  |  Download  |  How To Buy

Using the Cloudscape database with WebLogic

Setting up Cloudscape for use with the WebLogic Server
Setting up the example "demoPool" database
Creating a database
Using Cloudview
Other resources Cloudscape is a pure-Java relational database management system (RDBMS) that is shipped with the WebLogic distribution to allow you to run code examples with a functional RDBMS. An evaluation copy of Cloudscape version 2.0.1 is included in your WebLogic distribution in directory /weblogic/eval/cloudscape.

The WebLogic Tour and several WebLogic examples use Cloudscape for their default DBMS. This evaluation version will not expire, but it is restricted to store only a limited amount of data. See Other resources for more documentation on Cloudscape, or to purchase a licensed version.

Setting up Cloudscape for use with the WebLogic Server

  1. Add the Cloudscape libraries to the server's CLASSPATHWhat's a CLASSPATH?.

    To access Cloudscape from the WebLogic Server, you must add the following JAR file to your WebLogic Server CLASSPATH:

    where weblogic is the directory where WebLogic is installed.

    Note: You should add the Cloudscape classes by using the -classpath option on the command line. Do not specify any classes for Cloudscape with the weblogic.class.path property. See Setting classpath for more information on setting your CLASSPATH.

    There are other JAR files included in the distribution that you must use if you wish to use other Cloudscape utilities, such as the Cloudview editor.

  2. Set the cloudscape.system.home Java system property.

    Cloudscape uses the Java system property cloudscape.system.home to locate the directory that contains its control files and database data. You can set this directory to anywhere you choose, but the WebLogic examples use the directory /weblogic/eval/cloudscape/data.

    You can use one of two ways to set the cloudscape.system.home property:

    • Add -Dcloudscape.system.home=path to the java command line you use to start the WebLogic Server.
    • Or, add the property to the file. This property is included in the default file.

    Note: The evaluation version of Cloudscape shipped with WebLogic only supports one database connection to a cloudscape.system.home directory at a time.

  3. Some examples require that you set up a WebLogic JDBCWhat's JDBC? connection pool using the Cloudscape JDBC driver.

    The file has a sample entry for a JDBC connection pool using Cloudscape, which you can uncomment:


    The name of the Cloudscape database in this example is demo, which is included in the WebLogic distribution in the /weblogic/eval/cloudscape/data directory.

Setting up the example "demoPool" database

Many of the WebLogic examples use the JDBC connection pool demoPool. To use these examples, you must uncomment the following properties in your file.

  # Add an ACL for the connection pool:

Also check the following property if you installed the WebLogic Server from the zip file distribution, and you did not install it in the default location. This property tells the WebLogic JDBC Cloudscape driver where to find the demoPool database.
where /weblogic is the installation root directory where you unzipped the WebLogic zip distribution. If you installed using "Install Shield", this property should already be configured correctly.

Creating a database

If you want to create a new database, you can either:

  • Add the create=true property to the url of a connection pool, like this:

    This instructs Cloudscape to create the database in the cloudscape.system.home directory if it doesn't exist.

  • You can use Cloudscape's Visual DBMS tool to create databases and tables, or view and change the data in them. For more information see Using Cloudview below.

Using Cloudview

To start Cloudview from a command shell:

  1. Set your classpath to include:

    •   /weblogic/eval/cloudscape/lib/tools.jar
    •   /weblogic/eval/cloudscape/lib/cloudscape.jar
    •   /weblogic/lib/weblogicaux.jar
    where weblogic is the directory where WebLogic is installed. For example (on one command line):
    $ set CLASSPATH=/weblogic/eval/cloudscape/lib/tools.jar;\
    Here, we include the weblogicaux.jar file to provide the Java Swing classes required by Cloudview. If you are running with Java1.2 Swing is automatically included, so you need not include weblogicaux.jar. A JVM before Java1.2 will require access to the Swing classes. Cloudscape recommend that you download a JAR file called swingall.jar from the Cloudscape website. However, the weblogicaux.jar already includes the Swing classes, so is used here instead.

    Note: Do not include the swingall.jar file in the WebLogic Server's CLASSPATH. It will clash with the Swing classes already included in weblogicaux.jar file, and may cause the WebLogic Console to crash.

  2. Use this command (to be entered on one line) to start Cloudview:
     $ java -Dcloudscape.system.home=weblogic/eval/cloudscape/data 

  3. The Cloudview GUI should start. Use the File menu to open an existing database, or create a new one. For more details on using Cloudview, refer to their website

Other resources

For more information about Cloudscape, try these links to their website:
Online Cloudscape documentation
Cloudscape JBMS whitepaper
Product information
Online support

The WebLogic Tour, included with your WebLogic distribution, makes use of the cloudscape DBMS. The tour is also available online.


Copyright © 2000 BEA Systems, Inc. All rights reserved.
Required browser: Netscape 4.0 or higher, or Microsoft Internet Explorer 4.0 or higher.
Last updated 7/13/1999