Joe - Which type of RMAN backup are you doing? If you are doing RMAN datafile backups, then the size of your datafiles matter. If you are using the RMAN backup command, you are creating RMAN backup pieces. RMAN backup pieces contain parts of several data files, and you can't control that. You can control the maximum size of each piece.
Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -----Original Message----- Sent: Saturday, November 16, 2002 2:33 PM To: Multiple recipients of list ORACLE-L Joe & Tim, It is accurate to state the both full and level 0 have the same impact on the database, and both backup all used blocks. It is also accurate that a full backup cannot be used as a piece of an incremental strategy. Although there may be rare instances (no pun intended :-) ) when you want to use a full backup (e.g. separate from your incremental flow) I never use full backups in RMAN myself. If you want to reduce the size of your backups: 1) Reduce the size of segments by reorging data (yes, I now this is stating the obvious) 2) Make any tablespaces containing static data read-only (thereby skipping them in RMAN after level 0) 3) Use an incremental strategy (level 0, 1...) Of course you must balance MTTR. If you just need to reduce disk space utilized, consider integrating RMAN with your backup vendor's software (Legato, Veritas...) so the backups go directly to tape. HTH, -Ron- Joe, nice to see you still contributing to this group. Hope all is well. -Ron- -----Original Message----- Sent: Saturday, November 16, 2002 1:33 PM To: Multiple recipients of list ORACLE-L Tim, i'd be glad to hear someone else verify your statement as my understanding is the the only difference between full and level 0 is that full cannot be used as part of an incremental strategy, other than that they both back up the "ever used" blocks. Anyone else care to jump in on this one? joe Tim Gorman wrote: >How about switching to incremental (from "full") backups? Even if all >you do are level-0 backups? > >My understanding of the difference between a "full" and a "level-0" >backup (besides the obvious impact on any subsequent level-n >incremental backups) is that level-0 backups only back up database >blocks that are currently in use, as opposed to "full" backups which >back up all database blocks which have ever been used (i.e. no longer >"unformatted"). > >----- Original Message ----- >To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> >Sent: Friday, November 15, 2002 9:39 PM > > > > >>Hello All, >> >>Is resizing the datafiles the only way of reducing the size of an RMAN >> >> >full > > >>backup? Oracle Version 8.0.6. We take RMAN hot backups to disk, and >>the size of the backup has grown considerably. There's one large table >>which >> >> >we > > >>were considering truncating. But looks like that would not reduce the >>size of the backup. Dropping the table will call for an production >>outage. I >> >> >am > > >>considering moving the table to another tablespace, and dropping the >>existing one. Any ideas? >> >>Thanks >>Raj >> >>-- >>Please see the official ORACLE-L FAQ: http://www.orafaq.com >>-- >>Author: >> INET: [EMAIL PROTECTED] >> >>Fat City Network Services -- 858-538-5051 http://www.fatcity.com >>San Diego, California -- Mailing list and web hosting services >>--------------------------------------------------------------------- >>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: Joe Testa INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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: Ron/Sarah Yount INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).
