Firstly - do not tar a running uv system! This is because: A) you will get physical errors if writes are in progress. B) you will get logical errors if transactions are in progress. C) if you use dynamic files, the headers will not be updated. D) 'nuff said
uvbackup should be aware of the write context so as to prevent the problems associated with A and C, but not B unless you use transactions. The only safe way to backup the database is if it is either stopped or quiescent. AFAIR you can pause the database using SUSPEND.FILES if you need to run a backup without taking the system down, but make sure any users are aware that the database is stopped and that any application transactions have completed before issuing it. You can the uvbackup to disk (for speed), dump that backup to device and use transaction logging until the next backup. Brian > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Armon Group > Sent: 08 March 2004 12:20 > To: [EMAIL PROTECTED] > Subject: UV - Database backup > > > What are the suggested means of backing up a UV system > without taking it down ?? > > Is there a document anywhere with the benifits / drawbacks of > the following methods (or any other methods) > > uvbackup > T.DUMP > tar > mirror disk system + tar > > etc > > _________________________________________________________________ > It's fast, it's easy and it's free. Get MSN Messenger today! > http://www.msn.co.uk/messenger > > -- > u2-users mailing list > [EMAIL PROTECTED] > http://www.oliver.com/mailman/listinfo/u2-users > > ______________________________________________________________ > __________ > This email was checked by MessageLabs SkyScan before entering > Microgen. ________________________________________________________________________ This email was checked on leaving Microgen for viruses, similar malicious code and inappropriate content by MessageLabs SkyScan. DISCLAIMER This email and any attachments are confidential and may also be privileged. If you are not the named recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information. In the event of any technical difficulty with this email, please contact the sender or [EMAIL PROTECTED] Microgen Information Management Solutions http://www.microgen.co.uk -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users
