-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Mark,
On 7/20/2011 4:59 PM, Mark Thomas wrote: > On 20/07/2011 21:46, Christopher Schultz wrote: >> Mark, >> >> On 7/20/2011 4:25 AM, Mark Thomas wrote: >>> You need to de-register the driver you registered. However, that >>> won't be causing the leak since Tomcat already did the clean up >>> for you. Time to get the profiler out. >> >> Quick question: I get these JDBC Driver messages from Tomcat when >> I undeploy, but my code does not register the driver itself... > > The code might not, but registration is triggered by the application > including the JAR. Just putting a JAR with a JDBC driver and the > appropriate content in META-INF/services is enough to trigger > registration with the JVM. Tomcat has nothing to do with this. I was about to boldly state that I didn't have a JDBC driver in my webapp's lib directory. Fortunately for me, I triple-checked first to make sure that wasn't the case and, for some reason, the driver had snuck into that directory. In my webapp's source, the JAR file was sitting there participating in the build process, yet not under source control. I must have done something stupid at some point. Fortunately, this is dev and not prod :) So, I have saved myself the embarrassment of stating that my webapp /absolutely does not/ have a JDBC driver in it, opting for the equally embarrassing "I should have checked my setup before publicly complaining about Tomcat's behavior" :) >> Tomcat does via a <Resource> defined in context.xml. Is that driver >> registered with the WebappClassLoader and therefore considered >> "registered" by the webapp? > > No. It is registered with the DriverManager. It is loaded by the > WebappClassLoader which triggers the potential memory leak. Er, that's what I meant. >> I've been irritated by this behavior for a while because I feel >> like the container is performing the registration of the driver, >> but expecting the webapp to perform the de-registration. > > The META-INF/services mechanism does not provide automatic > de-registration so the app has to take care of it. I don't use META-INF/services but it's obvious what the problem is, here. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk4toxYACgkQ9CaO5/Lv0PDMpwCgpHgHx1c9APsMLNirnetR7/p+ KEYAnilC8kwpxrJ74ffWtJvlysP+J3C/ =5pO+ -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
