There are times you need to get the actual JDBC version (in ojdbc6.jar) for certification or compatibility purposes. The steps below describe how to do this.

export ORACLE_HOME=/u01/app/oracle/middleware
export TMPDIR=/tmp/jdbctemp
mkdir -p ${TMPDIR}
unzip ${ORACLE_HOME}/wlserver_10.3/server/lib/ojdbc6.jar -d ${TMPDIR}
cat ${TMPDIR}/META-INF/MANIFEST.MF | grep "Implementation-Version"

Sample Content of MANIFEST.MF

oracle@oraprod:/tmp/jdbctemp> cat META-INF/MANIFEST.MF
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.5.0_30-b03 (Sun Microsystems Inc.)
Implementation-Vendor: Oracle Corporation
Implementation-Title: JDBC
Repository-Id: JAVAVM_11.
Specification-Title: JDBC
Specification-Version: 4.0
Main-Class: oracle.jdbc.OracleDriver

Quicker Version

unzip -p ${ORACLE_HOME}/wlserver_10.3/server/lib/ojdbc6.jar META-INF/MANIFEST.MF | grep ^Implementation-Version