Application error java.lang.NoClassDefFoundError

Question

Hi ,
I am working on weblogic server and getting some error from application.
When application tries to connect to database, it uses sqljdbc.jar file, which has been kept on above mentioned path(i.e. /Oracle/Middleware/user_projects/domains/base_domain/lib)
I am getting the error...
java.lang.NoClassDefFoundError
The application does not able to find “sqljdbc4.jar” file in runtime classpath of the application sever.
FYI, we have added entry of sqljdbc4.jar in Weblogic classptah in $WL_HOME/common/bin/commEnv.sh file:
Below is the enrty:
WEBLOGIC_CLASSPATH="${JAVA_HOME}/lib/tools.jar${CLASSPATHSEP}${WL_HOME}/server/lib/weblogic_sp.jar${CLASSPATHSEP}${WL_HOME}/server/lib/weblogic.jar${CLASSPATHSEP}${FEATURES_DIR}/weblogic.server.modules_10.3.5.0.jar${CLASSPATHSEP}${WL_HOME}/server/lib/webservices.jar${CLASSPATHSEP}${ANT_HOME}/lib/ant-all.jar${CLASSPATHSEP}${ANT_CONTRIB}/lib/ant-contrib.jar${WL_HOME}/server/lib/sqljdbc4.jar"
Pls help regarding the same.

Answer 1

WEBLOGIC_CLASSPATH="${JAVA_HOME}/lib/tools.jar${CLASSPATHSEP}${WL_HOME}/server/lib/weblogic_sp.jar${CLASSPATHSEP}${WL_HOME}/server/lib/weblogic.jar${CLASSPATHSEP}${FEATURES_DIR}/weblogic.server.modules_10.3.5.0.jar${CLASSPATHSEP}${WL_HOME}/server/lib/webservices.jar${CLASSPATHSEP}${ANT_HOME}/lib/ant-all.jar${CLASSPATHSEP}${ANT_CONTRIB}/lib/ant-contrib.jar${WL_HOME}/server/lib/sqljdbc4.jar"
Note that you forgot the use the ${CLASSPATHSEP} between ant-contrib.jar and your sqljdbc4.jar, try something like
"...${CLASSPATHSEP}${ANT_CONTRIB}/lib/ant-contrib.jar${CLASSPATHSEP}${WL_HOME}/server/lib/sqljdbc4.jar"
When you want to use the ${DOMAIN_HOME}/lib diirectory, you have to use the -Dweblogic.ext.dirs system parameter and set it to the directory
from which you want to load libraries.