Here's a trick I like to reduce the downtime associated with moving large datafiles:
1. Place the tablespace that contains the file(s) you want to move into backup mode: - alter tablespace <name> begin backup; 2. Copy the file(s): - cp <oldfilespec> <newfilespec> - If you are moving multiple files, you can do this in parallel 3. Take the tablespace out of backup mode: - alter tablespace <name> end backup; 4. (Now the very brief downtile begins) Take the tablespace offline immediate - alter tablespace <name> offline immediate; 5. Issue the rename: - alter database rename file <oldfilespec> to <newfilespec>; 6. Recover the new file(s) or the whole tablespace (should be quite brief) - recover [datafile|tablespace] <name>; 7. (Now the very brief downtime ends) Bring the tablespace online again: - alter tablespace <name> online; -- Jeremiah Wilton http://www.speakeasy.net/~jwilton On Thu, 25 Oct 2001, Rachel Carmichael wrote: > depends on what you mean by downtime. > > yes you can do it without taking down the database and the instance, > no, you can't do it without at least taking the tablespace offline. > > alter tablespace x offline; > in os, make a copy of all datafiles in the new location > alter database move file 'y' to 'z'; > <repeat for all datafiles> > alter tablespace online; > > > --- Greg Moore <[EMAIL PROTECTED]> wrote: > > Can I move a tablespace and all it's associated datafiles to a new > > disk > > device with no downtime? > > > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > -- > > Author: Greg Moore > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > > San Diego, California -- Public Internet access / Mailing > > Lists > > -------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB ORACLE-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like subscribing). > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Rachel Carmichael > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Jeremiah Wilton INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
