Lots of Oracle10g Audit Log Files, Created every one or two second(s)

From: <haiwu.us_at_gmail.com>
Date: 13 Apr 2007 15:28:30 -0700
Message-ID: <1176503310.079589.89440@w1g2000hsg.googlegroups.com>

This is Oracle10g RAC, and there are lots of audit log files created by default under $ORACLE_HOME/rdbms/audit folder, they got created every one or two second(s) on each node, for each database instance running on this RAC.

The following is one entry. As you can see, it does not have "CLIENT TERMINAL" information, and I don't know how to track this to find out which processes or application or background process is causing this sys login, so frequently.

Any ideas?
Thanks,
Hai

Audit file /home/oracle/app/product/10.1.0.4/rdbms/audit/ora_17242.aud Oracle Database 10g Enterprise Edition Release 10.1.0.4.2 - Production With the Partitioning, Real Application Clusters, OLAP and Data Mining options
ORACLE_HOME = /home/oracle/app/product/10.1.0.4 System name: Linux

Node name:      wpprddb1
Release:        2.4.21-37.ELsmp
Version:        #1 SMP Wed Sep 7 13:28:55 EDT 2005
Machine:        i686

Instance name: oid1
Redo thread mounted by this instance: 1
Oracle process number: 26
Unix process pid: 17242, image: oracle_at_wpprddb1 (TNS V1-V3)

Fri Apr 13 17:25:06 2007
ACTION : 'CONNECT'
DATABASE USER: '/'
PRIVILEGE : SYSDBA
CLIENT USER: oracle
CLIENT TERMINAL:
STATUS: 0 Received on Fri Apr 13 2007 - 17:28:30 CDT