you may find your answer in the following references -
http://docs.oracle.com/cd/E24329_01/web.1211/e24378/basics.htm#SACLT117
Oracle resource adapters are located at WL_HOME\server\lib
http://docs.oracle.com/cd/E24329_01/web.1211/e24375/basics.htm#BRDGE128
Yes Searching for the jms jar file (wljmsra.jar) provided by weblogic I found the following -
/opt/oracle/middleware12c/wlserver/modules/com.bea.core.jmspool_3.0.0.0.jar
/opt/oracle/middleware12c/wlserver/modules/com.bea.web.pubsub.jms.ja_4.0.0.0.jar
/opt/oracle/middleware12c/wlserver/modules/com.bea.core.jmspool.ja_3.0.0.0.jar
/opt/oracle/middleware12c/wlserver/modules/com.bea.web.pubsub.jms_4.0.0.0.jar
/opt/oracle/middleware12c/wlserver/server/lib/jms-xa-adp/jmsadapter.jar
/opt/oracle/middleware12c/wlserver/server/lib/jms-local-adp/jmsadapter.jar
/opt/oracle/middleware12c/wlserver/server/lib/wlt3jmsclient-classesextra.jar
/opt/oracle/middleware12c/wlserver/server/lib/jms-notran-adp/jmsadapter.jar
/opt/oracle/middleware12c/wlserver/server/lib/console-ext/autodeploy/core-jms.jar
/opt/oracle/middleware12c/wlserver/server/lib/wljmsclient.jar
/opt/oracle/middleware12c/inventory/featuresets/resources/modules/wls_jmsClient_12.1.3.0.0.jar
/opt/oracle/middleware12c/oracle_common/modules/javax.jms_1.1.4.jar
/opt/oracle/middleware12c/oracle_common/common/templates/wls/oracle.wls-webservice-soapjms-template_12.1.3.jar
/opt/oracle/wlsdomains/domains/Wls1213/servers/AdminServer/tmp/_WL_internal/consoleapp/jxhze9/console-ext/core-jms/WEB-INF/lib/core-jms.jar
however http://docs.oracle.com/middleware/1212/wls/JMSRA/basics.htm#JMSRA117 clearly states
" Location of the JMS RA in the WebLogic Server Distribution
The wljmsra.jar file is located in the WL_HOME\server\lib directory of your WebLogic Server installation. "
Hence you should raise a support ticket with oracle to provide this file.