Dear mbuenaobra
As Also refer below for logs
https://www-secure.symantec.com/connect/forums/dlp-logs
As mentioned above yang, Please chcek the same, I am writing again with above log thead
Set the ORACLE_SID via My Computer > Properties > Advanced > Environment Variables. Add a new variable by clicking New and supplying a variable name ofORACLE_SID and a value of whatever the database name is as it appears in the tnsnames.ora file. Click OK when you are done.
When you log in from the command line again, the new variable will be picked up and you will get something similar to the following:
C:\Documents and Settings\Administrator>sqlplus protectSQL*Plus: Release 10.2.0.4.0 - Production on Tue Feb 10 13:49:24 2009Copyright (c) 1982, 2007, Oracle. All Rights Reserved.Enter password:Connected to:Oracle Database 10g Release 10.2.0.4.0 - ProductionSQL>
To connect to another database, provide the net service name as it appears in the tnsnames.ora file. Use the following example:
C:\Documents and Settings\Administrator>sqlplus protect@vontudbsSQL*Plus: Release 10.2.0.4.0 - Production on Tue Feb 10 13:49:24 2009Copyright (c) 1982, 2007, Oracle. All Rights Reserved.Enter password:Connected to:Oracle Database 10g Release 10.2.0.4.0 - ProductionSQL>