log verbosity in tomcat

[Beloglazov Maksim]

Hello,

I tried to increase log verbosity in server.xml file by setting debug 
attribute of Engine and Realm tags to 99. Verbosity of Logger I set to 
4. But still only INFO messages are displayed in the log file while 
Jakarta docs says that

   * "Debugging and exception messages logged by this |Realm| will be
     recorded by the |Logger| that is associated with our surrounding
     |Context|, |Host|, or |Engine|"
   * "Verbosity attribute is  the verbosity level for this logger.
     Messages with a higher verbosity level than the specified value
     will be silently ignored. Available levels are 0 (fatal messages
     only), 1 (errors), 2 (warnings), 3 (information), and 4 (debug).
     If not specified, the default value will be 1 (error)".
I have inspected the JAASRealm.java file and found that it uses 
log.debug() call for logging, but I can't see any of these messages in 
an actual log files! Google says nothing on this.

server.xml:
...
   <Engine name="Catalina" defaultHost="localhost" debug="99">
     <!--
     <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
     -->
     <!-- Global logger unless overridden at lower levels -->
     <Logger className="org.apache.catalina.logger.FileLogger"
             prefix="catalina_log." suffix=".txt"
             timestamp="true"
             verbosity="4"/>
     <!-- Because this Realm is here, an instance will be shared 
globally -->
     <!-- This Realm uses the UserDatabase configured in the global JNDI
          resources under the key "UserDatabase".  Any edits
          that are performed against this UserDatabase are immediately
          available for use by the Realm.  -->
     <Realm className="org.apache.catalina.realm.JAASRealm" debug="99"  
appName="merx" userClassNames="ru.mb.security.jaas.RdbmsPrincipal
          roleClassNames="ru.mb.security.jaas.RdbmsRole" />
       ....
   </Engine>
...
Is there any way to increase verbosity of logging?
Thanks in advance,

Beloglazov Maksim