Re: windows - tomcat - jdbc - "unable to connect" linux instead of windows is fine

[Mark Matthews]

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

Niels,

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

Mark Matthews
Consulting Member Technical Staff - MySQL Enterprise Tools
Oracle
http://www.mysql.com/products/enterprise/monitor.html