I uploaded the WAR file to the Tomcat 6 server in /var/lib/tomcat6/webapps
. Usually Tomcat 6 server unzips the WAR file. I alreay uploaded 2 WAR files which automatically unzipped by Tomcat 6 server. When I uploaded the 3rd WAR file it didn't unzip automatically. I have the web app connected to the database.
Precisely Tomcat does not simply unzip the WAR. It makes various operations needed to deploy the webapp starting from the WAR.
There must be some problem inside the WAR. E.g. a corrupted JAR in WEB-INF/lib
.
Try
webapps
folder (overwriting the previous copy)