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[protege-discussion] Connect with Database

Len Yabloko protege at
Thu Mar 27 07:34:29 PDT 2008

>I tried to convert my project into a database, but it keeps messaging that the 
>jdbc driver is not in the classpath. In effect I have modified the classpath 
>environment variable and copy/rename the driver as suggested by the guidelines 
>and also edited  Protégé.lax to add the driver,  but unsuccessfully. 
>The strange fact is that the other plugins, for example DataMaster, are able 
>to find the driver (I am actually using mysql-connector-java-5.1.6-bin), 
>whereas only the default driver (sun.jdbc.odbc.JdbcOdbcDriver) it is found by 
>the export tool.
>Any suggestion to manage this problem with the driver?

In my experience (using Windows XP) you don't need to change global CLASSPATH environmental variable, nor do you need to rename a jar. It is enough to declare classpath in protege.lax. To make sure you should look at console windows and see JVM initialization command -classpath parameter. Also make sure you use the right driver name (

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