Check weblogic version through Java classpath

 echo $JAVA_HOME
/scratch/test/Oracle/sriram/jrockit_160_22_D1.1.1-3/

$java -classpath /scratch/aime1/Oracle/sriram/wlserver_10.3/server/lib/weblogic.jar weblogic.version

WebLogic Server 10.3.4.0  Fri Dec 17 20:47:33 PST 2010 1384255

Use 'weblogic.version -verbose' to get subsystem information

Use 'weblogic.utils.Versions' to get version information for all modules
bash-3.00$