Thanks everybody, After I have backed up all the tablespaces I issue an ' alter database backup controlfile to trace' I then recreate the controlfile using the SQL. I have to do it this way as the database name and file structure names change slightly. Mike the idea that it might already be in backup mode could be a good one. We do get alarms if our tablespace our left in Backup mode but this now seems the only logical explanation. Stephen. -----Original Message----- From: Khedr, Waleed [mailto:Waleed.Khedr@xxxxxxx] Sent: Saturday, 26 June 2004 3:20 To: oracle-l@xxxxxxxxxxxxx Subject: RE: Hot Backup Theory Revisited: Updates/Writes to the file during the O/S copy process, possibly, makes = the copied file inconsistent. Waleed -----Original Message----- From: Guang Mei [mailto:gmei@xxxxxxxxxx] Sent: Friday, June 25, 2004 1:03 PM To: oracle-l@xxxxxxxxxxxxx Subject: RE: Hot Backup Theory Revisited: Why OS copy of control file won't work? Guang > -----Original Message----- Guang, Under normal circumstances yes, but the control file has to be a "alter database backup controlfile . . .", not a OS copy. Mike -----Original Message----- From: Guang Mei [mailto:gmei@xxxxxxxxxx] Sent: Friday, June 25, 2004 11:17 AM To: oracle-l@xxxxxxxxxxxxx Subject: RE: Hot Backup Theory Revisited: I am trying to understand: Is it true that if the copy of control file (just an OS copy) is done = AFTER issuing ALTER SYSTEM ARCHIVE LOG CURRENT; then no earlier (than the log switch) archive log is needed? We still = need the archive logs generated during tablespace backup process. Guang=20 ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ************** IMPORTANT MESSAGE ************** This e-mail message is intended only for the addressee(s) and contains information which may be confidential. If you are not the intended recipient please advise the sender by return email, do not use or disclose the contents, and delete the message and any attachments from your system. Unless specifically indicated, this email does not constitute formal advice or commitment by the sender or the Commonwealth Bank of Australia (ABN 48 123 123 124) or its subsidiaries. We can be contacted through our web site: www.commbank.com.au ************************************************** ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx put 'unsubscribe' in the subject line. -- Archives are at //www.freelists.org/archives/oracle-l/ FAQ is at //www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------