NO SUCH METHOD ERROR

Hai.. m new to Jboss

m trying to deploy a WAR file in jbosss6.0 with DB2 as back end..

initially i was getting the below exception during deployment.

Exception: java.lang.ClassCastException: org.jboss.resource.adapter.jdbc.WrapperDataSource cannot be cast to javax.sql.DataSource

then, by reading the previous posts, i have moved one of the jar file(j2ee.jar) from WEB-INF/lib to server/default/lib/..

Nw m getting the below error..

ERROR [org.apache.catalina.connector.CoyoteAdapter] (http-127.0.0.1-8080-1) An exception or error occurred in the container during the request processing: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getEffectiveSessionTrackingModes()Ljava/util/Set;
at org.apache.catalina.connector.CoyoteAdapter.postParseRequest(CoyoteAdapter.java:567)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:654)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:951)
at java.lang.Thread.run(Thread.java:619) [:1.6.0_13]

so, please could anyone help me out..

Get rid of the j2ee.jar file. JBoss already provides that functionality. (Apparently you are using an older version of j2ee.jar which is missing the method in question.)