Yes. I believe db needs to be mounted not open. Tim's article. http://www.oracle-base.com/articles/9i/DBNEWID.php still works for 11g as well ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Howard Latham Sent: Wednesday, June 22, 2011 9:37 AM To: ORACLE-L Subject: New database ID - NID! Quite A funny utility name I thought! Anyway Linux Redhat 4 Oracle 10 - trying to change database name Anyone got NID (New database ID) to work? I always get this NID-00135: There are 1 active threads DB has been up for a day so it cant be recovery threads. I will go back to the old fashioned way of achieving this but just wondered if it ever works? -- Howard A. Latham Sent from my Nokia N97 NOTICE: Confidential message which may be privileged. Unauthorized use/disclosure prohibited. If received in error, please go to www.td.com/legal for instructions. AVIS : Message confidentiel dont le contenu peut être privilégié. Utilisation/divulgation interdites sans permission. Si reçu par erreur, prière d'aller au www.td.com/francais/avis_juridique pour des instructions.