Re: windows - tomcat - jdbc - "unable to connect" linux instead of windows is fine
Posted by: Mark Matthews
Date: December 30, 2004 05:57PM

Niels wrote:
> I removed alll versions and tried 2 connectors, I
> have tried to place them in 2 positions
> (WEB-INF/lib & lib/ext) with the same
> errors:
> mysql-connector-java-3.1.5-gamma-bin.jar:
> SQL Error
> Communications link failure due to underlying
> exception: ** BEGIN NESTED EXCEPTION **
> java.lang.NullPointerException STACKTRACE:
> java.lang.NullPointerException at
> java.lang.String.getBytes(Unknown Source) at


Looks like the driver's trying to use a character encoding from the server that it doesn't know about. What version of the server is this? What is the result of issuing "show variables like '%character%'" on your server? Are you using the default character set, or is this something you've configured on the server?


Mark Matthews
Consulting Member Technical Staff - MySQL Enterprise Tools

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