In our system an Oracale DB (UNIX) connected to Mainframe DB2 thru ODBC called Oracle Gateway. We can find the following In mainframe system log
USER=ORACLE1 CONNECTION-ID=DB2CALL CORRELATION-ID=ORPRDSGW
JOBNAME=ORPRDSGW ASID=0116 TCB=00898988.
Please let me know what's USER=ORACLE1 in the above statement.
ORACLE1 id is no where defined in Mainframe or Oracle DB, from where ORACLE1 coming in to picture.