Paul Maxted wrote: > Hello again, > > Thanks for your swift responses - apologies for the length of the original, > but I see so many posts where people immediately ask for more details! > > David, I have tried dropping the validation query and I also tried rolling > back the version of mysql-connector-java to 5.0.8 in case the mismatch > between that and the MySQL version was relevant. > Neither has changed the outcome. > > Any further thoughts?
Can you connect to the DB using the command line mysql client program & the credentials you're trying to use? (I think that's a different error message, but worth checking anyway). I recently ran into the same unhelpful error message and found that the war redeployment process wasn't removing the tomcat/conf/Catalina/myhost/mycontext.xml file, which contained stale information from an earlier deployment. Delete the war, remove the copied context.xml from conf & trying putting a freshly built war back. p > Regards, Paul > ________________________________________ > From: Pid [...@pidster.com] > Sent: 03 March 2009 15:02 > To: Tomcat Users List > Subject: Re: Cannot create JDBC driver of class '' for connect URL > 'null'Caused by: java.lang.NullPointerException at > sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(JdbcOdbcDriver.java:507) > > David Smith wrote: >> Pid wrote: >>> Paul Maxted wrote: >>> >>>> Hello, I need some help with my database access application. >>>> >>>> I am running Tomcat 6.0.16-6.4 installed from the OpenSUSE repositories. I >>>> am trying to connect to MySQL 5.0.51a-27.2. >>>> I have mysql-connector-java-5.1.7-bin.jar in the tomcat6/lib directory. >>>> >>>> I have not modified server.xml or context.xml in tomcat6/conf - I include >>>> them for reference >>>> >> .... >>> where's the DB driver? >>> it's not in your war/lib... >>> >>> >>> p >>> >>> >>> >> See the top of the message. The OP included that info in the >> introductory part. It's in the correct place for tomcat 6. > > So he did, I must have lost that in all the scrolling... > > p > > > >> --David >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > > "DISCLAIMER: This message is proprietary to Aricent and is intended solely > for the use of the individual to whom it is addressed. It may contain > privileged or confidential information and should not be circulated or used > for any purpose other than for what it is intended. If you have received this > message in error,please notify the originator immediately. If you are not the > intended recipient, you are notified that you are strictly prohibited from > using, copying, altering, or disclosing the contents of this message. Aricent > accepts no responsibility for loss or damage arising from the use of the > information transmitted by this email including damage from virus." > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
