Retry after session mode update failed

Hi,

We are on Tamino 4.2.1.7 and Weblogic 8.1 SP3.

For a timed out session, we see in the log file that Tamino Retry after session timeout, but sometimes it can recognize a re-connect situation and does “SessionState RESETED”, and get a new session. Sometimes it can’t recognize the re-connect situation, it keeps trying on the same session. 2 minutes later, the client got this error “Retry after session mode update failed. Transaction mode cannot be updated. Tamino failure.
Tamino access failure.” In the server logs, every minute Tamino tries to do a roll back, and each roll back returns the same error:
<ino:messagetext ino:code=“INOXHE8285”>Invalid Session ID</ino:messagetext>ino:messagelineSession 140 is not active.</ino:messageline>"

We are using 4.2.1.7 version JavaTaminoAPIExamples.jar to access com.softwareag.tamino.db.api.objectModel.dom4j.TDOM4JObjectModel. The other connectivity is coming from TaminoAPI4J.jar and TaminoJCA.jar (4.2.1.7).

Thanks!
Helen