After the Temporary buffer cache message, the connection handle, connection ID (SA connID), and user name are logged. They appear in the .iqmsg file only once per database connection. The connection handle is the value displayed by the sa_conn_info stored procedure.
To correlate connection information in the -zr log file with that in the .iqmsg file, see “Correlating connection information”.
2009-05-12 09:34:42 0000000002 Txn 173 2009-05-12 09:34:42 0000000002 Connect: 1550990889. SA connID: 1. User: DBA.