I have google to death and cannot figure out how to connect to another user using proxy authentication from an os authenticated user. Does anyone know if this is even possible? TIA For example: proxyauth is a database user with password authentication This work. connect proxyauth[scott]/proxyauthpassword For example: os$oracle is an OS authenticated database user This does not work. connect os$oracle[scott] Enter password: ERROR: ORA-01005: null password given; logon denied Michael Dinh : XIFIN : 858.436.2929 NOTICE OF CONFIDENTIALITY - This material is intended for the use of the individual or entity to which it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable laws. BE FURTHER ADVISED THAT THIS EMAIL MAY CONTAIN PROTECTED HEALTH INFORMATION (PHI). BY ACCEPTING THIS MESSAGE, YOU ACKNOWLEDGE THE FOREGOING, AND AGREE AS FOLLOWS: YOU AGREE TO NOT DISCLOSE TO ANY THIRD PARTY ANY PHI CONTAINED HEREIN, EXCEPT AS EXPRESSLY PERMITTED AND ONLY TO THE EXTENT NECESSARY TO PERFORM YOUR OBLIGATIONS RELATING TO THE RECEIPT OF THIS MESSAGE. If the reader of this email (and attachments) is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. Please notify the sender of the error and delete the e-mail you received. Thank you.