Build a new standby controlfile from the production database. From production. alter database create standby controlfile as 'xxxx'; I use standby.ctl for xxxx. Shutdown your standby database. Copy standby.ctl from production to appropriate control file locations on your standby. Restart your standby database. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Howard Latham Sent: Wednesday, February 04, 2009 11:41 AM To: oracle-l@xxxxxxxxxxxxx Subject: standby Oracle 11g Redhat Linux, We lost the controlfile from a standby its not THAT important but whats the simplest way to rebuild it? We can backup the primary control file to trace; -- Howard A. Latham -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l