Disagree with the "There should be one listener process per server. Period. " We have multiple oracle/servers running on the same UNIX server. If all of them are running on one listener, then I have to drop the listener for all if I need to shutdown SQL*NET access to one. Each database has it's own listener running on a different port...PLUS we have one listener running for all databases that is on a NATTED IP for administrative access through a VPN. And none of them are on default 1521 -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Mercadante, Thomas F (LABOR) Sent: Wednesday, July 13, 2005 7:46 AM To: rob.langmuir@xxxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: RE: Oracle instance startup user on Unix Bob, My concerns are management and security. Let's tackle the easy one first: Security. Who will have access to the unix account where the database resides? I'm assuming you have a DBA group. Will you have exclusive access to this unix account? If everybody and his brother has the password for this account, then the security of the database is non-existant. You will have no control over who can update anything. Management. Who is managing the server? And who is managing Oracle on that server? Zhu Chao makes a reasonable point about multiple Oracle homes and accounts for different database instances. But I would argue that having them all in an Oracle unix account is much easier to manage. And finally the listener issue. There should be one listener process per server. Period. They should not be managing their own listener. Just plain dumb. My little 2 cents. Tom -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of RSL Sent: Wednesday, July 13, 2005 1:27 AM To: oracle-l@xxxxxxxxxxxxx Subject: Oracle instance startup user on Unix We have a third-party application, which as part of installation process, uses it's own Unix account to create/startup Oracle database/instance. They also want to start a listener with this account. In the future we plan to add our own instances/databases, and these will all be started/created using Oracle account. I don't much like the idea of having two separate unix accounts involved in creating database(s) and starting instances. Although there is no practical reason why this can't be done, can you please offer any reasons why you wouldn't /shouldn't do this. Thanks..../Bob -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l