Tell us a little more. When you say "I have restored every thing from the production to Test" do you mean all the datafiles and such, or do you also mean the software? How are you trying to open the database? OEM, sqlplus, something else? What operating system are you on? And the big one: Exactly what problem are you having? Is there an error message? Does it just hang? Have you looked in the alert log or otherwise explored the log and trace files? That would be a good start to help us help you. Regards, mwf _____ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of nilesh kumar Sent: Monday, November 09, 2009 9:01 AM To: ORACLE-L Subject: Database refresh problem Hello DBA's, Good Morning!! Hoep everyone is doing a great job. I am stuck in middle of database refresh activity. I just got to know that the target Production database which I was refreshing was of version 10.2.0.3 where as the earlier database on test machine was 10.2.0.4. I have restored every thing from the production to Test. But I am facing the proble while I open the database. How should I solve this please help. Thanks Nilesh