JMS C API - Retention Of Non-Acknowledged Messages

Question

I am sending messages via the JMS C API from a session created using CLIENT_ACKNOWLEDGE option in JmsConnectionCreateSession() call. Yet, if I receive a message and do not acknowledge it, then I shut down and bring back up my app, the message is not there.
Shouldn't it be there on startup of app? Is there a special API call to retrieve messages that weren't acknowledeged?
Thanks.
Moshe

Answer 1

I got it to work, i had to reorder the path directories.. which is kind of strange!
here is how i sat up the environment to get the C API to work based on : "JmsContextCreate" return -3 (JMS_JVM_ERROR)
CLASSPATH:
     <somepath>\lib\weblogic.jar
NLSPATH:     
     <somepath>\lib
PATH:
     <somepath>\lib;                              // : jmsc.lib, LIBJMSC_CAT, weblogic.jar or wlfullclient.jar
     <somepath>\bin                              // : jmsc.dll
     C:\Oracle\Middleware\weblogic92\common\lib          // : jni.dll
     C:\Oracle\Middleware\jdk160_18\jre\bin;               // : java.exe++
     C:\Oracle\Middleware\jdk160_18\jre\bin\client;          // : jvm.dll
Directories in ENV->PATH should be ordered like this:
1. <somepath>\lib;                              // : jmsc.lib, LIBJMSC_CAT, weblogic.jar or wlfullclient.jar
2. <somepath>\bin;                              // : jmsc.dll
3. C:\Oracle\Middleware\weblogic92\common\lib;                         
4. C:\Oracle\Middleware\jdk160_18\jre\bin;
5. C:\Oracle\Middleware\jdk160_18\jre\bin\client;