Oracle 11g see transaction or session start time I want to know when a session or transaction started. The deadlock file doesn't give me this information. Is there some logfile that keeps these records?

I've got a transaction id "TX-1234-abcd", a session number and some "DID 000-000ABCD" number.
Franz

The view V$TRANSACTION likely gives you the information you require. The transaction id is the XID column,