Scott, I haven't followed this entire thread so I apologize if this has been covered but how did you build the standby copy? Did you do a duplicate or what? If you did a duplicate you need to make sure it did a SET NEWNAME for the datafiles (as it sounds like that step did not happen). Also on a duplicate you can run the duplicate where the duplicate is automatically configured as a standby. http://docs.oracle.com/cd/B28359_01/server.111/b28294/rcmbackp.htm#SBYDB01500 Also, if I'm not mistaken you could mount your instance and rename the datafiles as necessary to get it to open as a standby? (Of course if this is Active Dataguard we're talking about, then maybe none of this applies as I haven't set one of those up yet). Chris -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Scott Canaan Sent: Monday, June 03, 2013 2:51 PM To: Radoulov, Dimitre Cc: oracle-l@xxxxxxxxxxxxx Subject: RE: Data Guard Follow-up It's still trying to open the primary data files. Here are the initLNX8TEST.ora entries: log_file_name_convert='/oracle/data/LNX8TEST/','/oracle/data/LNX9TEST/','/oracle/data/LNX8TEST/mirror_files/','/oracle/data/LNX9TEST/mirror_files/' db_file_name_convert='/oracle/data/LNX8TEST/','/oracle/data/LNX9TEST/' Here are the initLNX9TEST.ora entries: log_file_name_convert='/oracle/data/LNX9TEST/','/oracle/data/LNX8TEST/','/oracle/data/LNX9TEST/mirror_files/','/oracle/data/LNX8TEST/mirror_files/' db_file_name_convert='/oracle/data/LNX9TEST/','/oracle/data/LNX8TEST/' The timestamps for all of the files, except the control files, is not changing in LNX9TEST. Scott Canaan '88 (srcdco@xxxxxxx<mailto:Scott.Canaan@xxxxxxx>) (585) 475-7886 - work (585) 339-8659 - cell "Life is like a sewer, what you get out of it depends on what you put into it." - Tom Lehrer. -- //www.freelists.org/webpage/oracle-l