Parallels

Resolution

Such problem usually occurs if an application tries to access some resources but it has no rights to access them due to Tomcat security settings which can be managed through $CATALINA_HOME/catalina.policy. The errors can be realated to MySQL dstsbsde connection or some file accessing. Let see typical permission errors.

1. An application cannot connect to MySQL database. The error received: "Unable to connect to any hosts due to exception: java.security.AccessControlException: access denied (java.net.SocketPermission localhost resolve)"

To allow DOMAIN.TLD/APPLICATION/ WebApp TCP/IP connections add the section into catalina.policy:
 
grant codeBase "file:/var/cache/tomcat4/work/PSA/DOMAIN.TLD/APPLICATION/-" {
permission java.net.SocketPermission "IP_ADDRESS", "resolve, connect";
};




Restart Tomcat service after catalina.policy modification.

See for more information: http://jakarta.apache.org/tomcat/tomcat-4.1-doc/security-manager-howto.html


Note: for Debian the lines must be added into /etc/tomcat4/policy.d/04webapps.policy.
Note: Tomcat 5 has similar settings, see http://tomcat.apache.org/tomcat-5.0-doc/security-manager-howto.html