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When you load files in the Driver JAR Files list, DbVisualizer analyzes each file to find the classes that represent main driver classes. Each such class is listed under the path where it was found in the Driver JAR Files list, and it is also added to the Driver Class list in the Driver Settings area above. If there is more than one class in the list, make sure you select the correct Driver Class from the list. Consult the driver documentation (or the Databases and JDBC Drivers page) for information about which class to select. 

JDBC drivers that

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require several JAR or ZIP files

Some drivers depend on several ZIP or JAR files, or directories. Simply select all JARs at once and press Open in the file chooser dialog. The Driver Manager will then automatically analyze each of the loaded files and present any JDBC driver classes or JNDI initial context classes it finds.

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