Errors are reported when Tomcat stop

[kazuya]

When I stop Tomcat include activiti-explorer, errors are reported as attached catalina.out file.
What should I do for the resolving?

kazuya

[kazuya]

Hi,
Currently I use MySQL for activiti, so I deleted h2.jar in Tomcat.
Now I tried to deploy h2.jar again, the errors are resolved.

kazuya

[kazuya]

Unfortunately the errors were happened again.
Other cause would exist.

kazuya

[kazuya]

Additional info;
I use Activiti 5.9 with Java 6, Tomcat 6, MySQL 5 and CentOS 5.
I modified following files in activiti-explorer for MySQL.
Are followings correct for using Activiti with MySQL?
Currently deployed processes are processing correctly except the errors in catalina.out.

db.properties
db=mysql
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/activiti
jdbc.username=mysql
jdbc.password=mysql

applicationContext.xml
  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/activiti?autoReconnect=true" />
    <property name="username" value="mysql" />
    <property name="password" value="mysql" />
     <property name="defaultAutoCommit" value="false" />
  </bean>

[ronald_van_kuij]

I only see warnings in the log, not errors…