Error in Apache Tomcat

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Error in Apache Tomcat

Postby GabrielWyss » Thu May 03, 2018 7:32 am

Hello everybody

In the logs of our Apache Tomcat Servers version 7 and 8 we found regurarly the following entry:
(Found in line: 4) 02-May-2018 06:39:10.576 SEVERE [http-nio-80-exec-5] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [omsv_police] created a ThreadLocal with key of type [$1] (value [$1@55116068]) and a value of type [] (value [4c5a4e58-69ee-44d4-afc1-df4d233f186b-0]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.

This error comes with different solutions.
Does anyone have any idea where this problem comes from?

Thanks for help
Gabriel Wyss
om computer - SAN Partner
Posts: 83
Joined: Tue Jul 13, 2010 2:12 pm
Location: Cham, Switzerland

Re: Error in Apache Tomcat

Postby rgansevles » Fri May 11, 2018 10:53 am


This is a bug in the microsoft jdbc driver and reported in and

It is supposed to be fixed in the latest release, see
Can you try with the latest release?

Rob Gansevles
User avatar
Posts: 1880
Joined: Wed Nov 15, 2006 6:17 pm
Location: Amersfoort, NL

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