"Unexpected excpetion..." error message with web.xml file

[Panos Konstantinidis <gi...@yahoo.com>]

  Hello, I am using Tomcat 4.1 under Windows NT (with
service pack 2 installed) and jdk1.3.

  I have configured a JDBC realm in my server.xml file
 (to connect to a MSAccess database through JDBC:ODBC
bridge) by doing the following for my web app:

<Context path="/dasreiseportal"
docBase="dasreiseportal" debug="0">
					<Realm 
className="org.apache.catalina.realm.JDBCRealm"
debug="99"
				  			driverName="sun.jdbc.odbc.JdbcOdbcDriver"
							connectionURL="jdbc:odbc:LoginDBTest"
							userTable="Users" userNameCol="UserName"
userCredCol="UserPassword"
							userRoleTable="UserRoles"
roleNameCol="RoleName" />
				</Context>

(I have also tried the Realm tag outside the Context
tag).

  I also have a web.xml file under the daseriseportal
webapplication folder which is:

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems,
Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<!--
   - Deployment descriptor for an authenticated
   - section of the web site.
  -->
<web-app>
	<display-name>Dasreiseportal</display-name>
	<description>Configuration for dasreiseportal
realm.</description>
	<security-constraint>
		<web-resource-collection>
		
<web-resource-name>dasreiseportal</web-resource-name>
			<url-pattern>/*</url-pattern>
		</web-resource-collection>
		<auth-constraint>
			<role-name>dasreiseportal</role-name>
		</auth-constraint>
	</security-constraint>
	<login-config>
		<!-- BASIC authentication, i.e. the authentication
resets when the user closes his/her browser -->
		<auth-method>BASIC</auth-method>
		<realm-name>Dasreiseportal</realm-name>
	</login-config>
</web-app>

  Everytime I startup Tomcat it throws a 

"An unexpected exception has been detected in native
code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION
occurred at PC=0x1f90f56c
Function name=SQLFetch
Library=C:\WINNT\System32\ODBCJT32.DLL

Current Java thread:
	at
sun.jdbc.odbc.JdbcOdbc.bindInParameterString(Native
Method)"

  and goes on with several pages of error messages. If
I do not put the web.xml file under the dasreiseportal
folder then everything works fine (but I have no
realm).

  I have set up the tables and roles properly in the
database (according to Tomcat Realm documentation).

  I have looked for known bugs in apache's web site
but I could not find anything relevant.

  I have looked through the Tomcat archives and some
more people had the same error (though not with Tomcat
4.1 buit with 3.2.2). They suggested that a MSACCESS
db might not be suitable for commercial use, but this
is the only solution I can go with at the moment.

  Any help/thoughts are appreciated.

  Regards

         Panos

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Re: "Unexpected excpetion..." error message with web.xml file

[Panos Konstantinidis <gi...@yahoo.com>]

  Further information, I just figured out that the
exception is thrown in the following lines of my
web.xml file:

<auth-constraint>
	<role-name>dasreiseportal</role-name>
</auth-constraint>

  If I completely take out the <role-name> tag then
the web application works fine (but I do not have the
Realm, at least I can see it running). If I have it
there- even if it is empty- an unexpected exception
occurs. Any thoughts/suggestions?

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