Data Source Problems

This section includes common problems that you may encounter when connecting TopLink to your data source. This section includes the following topics:

• Database Connection Problems

Database Connection Problems

This section describes common errors and problems you may encounter when communicating with or logging in to the database.

The class [class] was not found.

Cause: You attempted to log in to the database, but TopLink could not find the JDBC driver for the database.

Action: Ensure that the JDBC_CLASSPATH in the setenv.cmd file points to your JDBC driver JAR files. Verify that your PATH includes all files (for example, native .dll files) required by the driver. If the path to your JDBC driver JAR files contains spaces, then the path must be enclosed in double-quotes in the setenv.cmd file. For example:

set JDBC_CLASSPATH="C:\Program Files\some directory\driver.jar\"

For more information, see "Configuring the TopLink Workbench Environment".

Username or password could be invalid.

Cause: TopLink was unable to log in to the database.

Action: Ensure that the Username and Password for the database are correct.Verify with your DBA that the database is set up and operating correctly.

You must define a development login.

Cause: You attempted to log in to the database from TopLink Workbench, but you did not define a development login.

Action: On the database property sheet, select a Development Login, or create a new Defined Login. See "Configuring Login Information".

No database driver has been specified.

Cause: You attempted to log in to the database from TopLink Workbench, but you did not complete the login information.

Action: Complete all the required fields on the database property sheet for the selected development login. See "Configuring Login Information".

Invalid URL specified.

Cause: You attempted to log in to the database from TopLink Workbench, but the URL is incorrect.

Action: Complete the URL field on the database property sheet for the selected development login. See "Configuring Login Information".