Chris, I'm not sure if it makes a difference but try putting the ResourceLinks before the Realm definition in server.xml.
HTH Liem ----- Original Message ----- From: "Chris Ward" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, November 26, 2003 12:23 PM Subject: Intermittent failures using DataSources > > > > Hi all, > > Please excuse any going over of old ground with this question, I have > searched every archive > I can find. I have recently started using DataSources from JSPs using > the JSTL taglib (I think > this is a Tomcat rather than taglib question). > > I've got a <Context> for my apps and initially had my bunch of > DataSources set up within > the <Context>. > > No problems. Happy, happy. > > Anyway - a few days ago I set up the required database tables to support > a DataSourceRealm > for FORM authentication and I moved all my DataSource config up to the > <GlobalNamingResources> > since I'm sure I read somewhere that this had to be done. > > That initially caused me problems until I added a <ResourceLink> to my > <Context> for each DataSource > > . . . . . . > > <Context path="/hal" docBase="hal" debug="0" privileged="true" > reloadable="true"> > <Logger className="org.apache.catalina.logger.FileLogger" > prefix="HAL." suffix=".txt" timestamp="true"/> > > <!-- DataSources moved from here to > GlobalNamingResources area --> > > <Realm > className="org.apache.catalina.realm.DataSourceRealm" debug="99" > dataSourceName="jdbc/Id" userTable="HAL_UserId" > > userNameCol="Name" userCredCol="Password" > userRoleTable="HAL_UserRole" roleNameCol="Role" > /> > <ResourceLink name="jdbc/Id" global="jdbc/Id" > type="javax.sql.DataSource"/> > <ResourceLink name="jdbc/Static" global="jdbc/Static" > type="javax.sql.DataSource"/> > <ResourceLink name="jdbc/Params" global="jdbc/Params" > type="javax.sql.DataSource"/> > <ResourceLink name="jdbc/Control" global="jdbc/Control" > type="javax.sql.DataSource"/> > <ResourceLink name="jdbc/SelmaData" > global="jdbc/SelmaData" type="javax.sql.DataSource"/> > <ResourceLink name="jdbc/BartData" > global="jdbc/BartData" type="javax.sql.DataSource"/> > <ResourceLink name="jdbc/Beauchamp" > global="jdbc/Beauchamp" type="javax.sql.DataSource"/> > </Context> > > . . . . . . > > > > All the <DataSources> are set up along these lines.. > > . . . . . . > > <Resource name="jdbc/Id" auth="Container" > type="javax.sql.DataSource"/> > <ResourceParams name="jdbc/Id"> > <parameter> > <name>username</name> > <value>{deleted in mail}</value> > </parameter> > <parameter> > <name>password</name> > <value>{deleted in mail}</value>> > </parameter> > <parameter> > <name>driverClassName</name> > <value>com.inet.tds.TdsDriver</value> > </parameter> > <parameter> > <name>url</name> > <value>{deleted in mail}</value> > </parameter> > </ResourceParams> > > . . . . . . > > > So I think everthing looks okay. > > > Problems > ======== > > 1) With the above setup I get... > -------------------------------- > > ServerLifecycleListener: createMBeans: MBeanException > java.lang.Exception: ManagedBean is not found with DataSourceRealm > at > org.apache.catalina.mbeans.MBeanUtils.createMBean(MBeanUtils.java:642) > > In my Tomcat console, unless I comment out these lines in server.xml > > <Listener > className="org.apache.catalina.mbeans.ServerLifecycleListener" > debug="0"/> > <Listener > className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" > debug="0"/> > > If I *do* comment them out the Tomcat Admin tool will complain. > > > > 2) Sometimes my JSPs just start failing with this message... > ------------------------------------------------------------ > > org.apache.jasper.JasperException: Unable to get connection, DataSource > invalid: "Cannot load JDBC driver class 'null'" > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.ja > va:254) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) > > even though they may have been running fine beforehand. > > > > Any help would be great. Sorry for the length of the message, it's > driving me > crazy! > > > Many thanks, > Chris > > > > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]