Tomcat - disable session serialization

[wonnekeysers]

Is it possible to use the war's META-INF/context.xml to override the default session manager configuration?

I tried to disable this session serialization, which occurs on undeployment, but was unsuccessful with these configurations in META-INF/context.xml:

<Context override="true">
 <Manager className="org.apache.catalina.session.StandardManager" pathname=""/>
</Context>

<Context override="true">
 <Manager className="org.apache.catalina.session.PersistentManager" saveOnRestart="false"/>
</Context>