Hi All, This is a windows XP. I test the problem locally with database in my laptop. Basically I want to know if ORA_DBA group is required to successfully startup database after server reboot. If I remove ORA_DBA group from local administrator, after server reboot database cannot bring up automatically, and I got this error on $ORACLE_HOME/database/oradim.log: Wed Sep 26 17:41:25 2007 C:\oracle\db\10.2\bin\oradim.exe -startup -sid sage -usrpwd * -log oradim.log -nocheck 0 Wed Sep 26 17:41:53 2007 ORA-24327: need explicit attach before authenticating a user If I add again ORA_DBA group, after server reboot database will start up successfully. I only found this message on oradim.log: Wed Sep 26 17:46:42 2007 C:\oracle\db\10.2\bin\oradim.exe -startup -sid sage -usrpwd * -log oradim.log -nocheck 0 So, please advise if ORA_DBA group is ALWAYS needed for successfully startup database after server reboot? Thanks & Regards, tomi ____________________________________________________________________________________ Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting -- //www.freelists.org/webpage/oracle-l