excluding tablespace in the hot backup

Similar Questions

• Where is the official Oracle documentation that describes the hot backup?

  I used the cruelly utility failure to search for Metalink and Google, but the closest thing, I found is a description on "ask Tom".
  
  I'm looking for official Oracle documentation that describes what is happening internally during a hot backup. There are many websites and blogs out there that describe, but I'm looking for a description of Oracle themselves. The only things I found in the Oracle documentation until now is to know how to start and stop the hot backup, but not what is happening internally. GR 11, 2 preference if it made a difference.
  
  Thanks in advance.

  Hello;

  Its probably gone RMAN covers this.

  The closest would be:

  Backup and recovery reference 11g Release 2 (11.2) E10643-06

  Or

  Backup and recovery User Guide 11 g Release 2 (11.2) E10642-05

  See Chapter 8 - Concepts of backup RMAN - online backups and backup Mode

  Best regards

  mseberg

• stop the database when the HOT backup running

  Hello
  
  Can someone pls tell... WHT can impact on the database if the database will get stop accidentally during the hot running backup...
  
  Thank you

  There will be no impact on db; because its ORACLE database; very smart and easy to use.

  What happens if the instance goes down for the tablespaces into backup mode?

  When you start the database after that, Oracle will say that it requires recovery. It's because the RCS has been frozen and this is the expected behavior, because if you restore the file copied, it needs to be recovered. (and the only way that oracle has to set its value in the copy is put in the current file while it is copied)

  In this case, you can issue:

  ALTER DATABASE END BACKUP; ALTER DATABASE OPEN; to open the database.

  But your backup is not usable, it must do it again.

  Source: http://knol.google.com/k/oracle-begin-backup-end-backup#

  HTH
  Girish Sharma

• The hot backup process

  Hello
  
  I have a Dev on Oracle 10 g (10.2.0.3 on Solaris 8) db, for which I want to set up a simple backup process hot. My question is: for simplicity, instead of putting each tablespace in backup mode and to take it out of backup mode, can I put the entire db in backup mode and copy the data files and control and take the Pb of backup mode:
  
  -J' my intention to do so hours offline when activities are lower and db is small and there is enough space to make it so again is generated (compared to each tablespace in backup mode) that this is acceptable. Thus, the following process is valid:
  
  (1) connecting to the db as sys
  (2) alter database begin backup
  (3) copy all of the files and control the db for the backup
  (4) change the backup of the end
  - or after it is necessary to issue the - modify the statement of system switch logfile also? -If so, what is the purpose of this statement?
  
  Also another question is: I don't have enough space on the db server hosting backups so after you put the db in backup mode, I transfer the file in Microsoft windows server for solaris. -Is possible with rman?
  The reason why I go to managed user backup, of rman is that we do not store the backup on the db Server nor we have any tape, but we have a windows machine that can be used to store backups. so in this case, is it possible that rman can be used?
  
  Thank you very much
  Cedric

  When you use RMAN, you don't have to put a tablespace (or database) in BACKUP Mode.

  With RMAN, you can create of BACKUPSETs, in this case, backups can be smaller than the actual database files as RMAN does not save the blocks that have never been used (that is to say, the blocks above the last measure in a data file). In addition, you can create AS COMPRESS in order to introduce more compression.
  Alternatively, you can creat backup as Copy, in which case backups are the same size as the data files that you might have with scripted backups (UserManaged).

  You MUST run your database in ArchiveLog mode.
  You MUST save each ArchiveLog.
  You must save your controlfiles as backup controlfile separate. However, even if you do not configure CONTROLFILE AUTOBACKUP ON, whenever you back up the SYSTEM Tablespace (that I advice every day), the controlfile is going to get backed up in the same backup set. For added convenience, I prefer controlfiles backup as separate backups so that they save files are easily identifiable.

• switch after the hot backup log file

  Hello world
  Why should we change log file after the end of the backup command that is to say, after the end of the backup hot?
  Why we should take a backup control files to database level, but not through operating system level that is to say, order cp?

  Why we should take a backup control files to database level, but not through operating system level that is to say, order cp?

  If you're doing a cold backup, this is where you use cp.

  But when the database is in place, controlfile is used and it is continuing to change the oracle process. Now the question is how to get the consistent image of the controlfile, here's where you their support at the database level (for example backup controlfile). When you do that level database, a snapshot file is created time and she is saved.

  HTH

• Tablespace and datafile hot backup

  Hello
  
  I wanted to if there is a command to copy a data file using the sqlplus command. I made a script that backs up the database while its online. I made a script for the alter tablespace begin backup, but I wanted to know how to copy the data files without using the OS command, instead, I wanted to use a sql commands. Is there any script or procedure to do this one.
  
  
  Thank you
  
  Best regards
  Audrey

  Hi you can do it from windows sqlplus

  If you are using windows try this

  alter tablespace users begin backup;
  ocopy I:\USERS01 of the host. DBF C:\hotdump\
  alter tablespace users end backup;

  If you use Linux use suite

  alter tablespace users begin backup;
  ! / u01/oradata/USERS01 cp. DBF/U02/hotdump /.
  alter tablespace users end backup;

• Hot backup

  We take the backup hot at 18:00 (daily, filled in 1-2 hours).
  At 23:30 all archive log files will be separately BackupExec backup and the log files are deleted from the file archive of the Oracle.
  
  Day before yesterday, for some reason, the copy of the data file hung up (after alter database begin backup has been published in the Hot backup script)
  That the copy has been hung up, 'alter database end backup' has been issued, the PB was in backup mode.
  The average while the deleted BackupExec database journal archive file Archive of the Oracle.
  
  Yesterday hot backup was completed successfully, only alter database begin backup failed (ORA-01146: cannot start online backup - folder 1 is already in the backup)
  After the hot backup 'alter database end backup' was published successfully.
  
  Given that logs archiving failed whien database is always in backup mode, will all the data generated duing the applied to the data file backup mode?
  
  Please notify.
  
  Thanks in advance,
  
  Arul

  You hear all changes (including the dml, ddl) applied to the database during the backup mode...

  YES.
  See http://www.bluegecko.net/oracle/oracle-tablespace-hot-backup-mode-revisited/

  Hemant K Collette

• archivelog mode and hot backup

  Hello
  in g R2
  This is the hot backup:

  online backup
  
  A backup of one or more datafiles taken while a database is open and the datafiles are online. 
  When you make a user-managed backup while the database is open, you must put the 
  tablespaces in backup mode by issuing an ALTER TABLESPACE BEGIN BACKUP command. 
  (You can also use ALTER DATABASE BEGIN BACKUP to put all tablespaces in your database into backup mode in one step.)

  would we in log mode archive to do an online backup?
  
  Thank you.

  user522961 wrote:
  Hello
  in g R2
  This is the hot backup:

  would we in log mode archive to do an online backup?

  Yes. It is a must!

  HTH
  Aman...

• Need help with RMAN archive destination error during hot backup

  Hello
  
  Oracle 8.0.6, Win 2000 Server.
  
  We take the cold daily backup as our backup strategy. We wanted to implement the backup hot. If one day, I turned on the log mode archive and set the directory to archive in F:\drive to store all archived generated. I took the backup and put the database in noarchive log mode. We continued with offline backup.
  
  After a few days, I wanted to test the hot backup again. I created the directory of the archive in E:\archive\ instead of F:\archive\. When I started the hot backup, all files have been copied except the archives.
  
  The error was:
  
  RMAN-03022: compilation command: sql
  RMAN-06162: SQL statement: alter system archive log current
  RMAN-03023: executing command: sql
  
  RMAN-03022: compilation command: backup
  RMAN-03026: recovery error release of channel resources
  RMAN-08031: output channel: c1
  RMAN-08031: output channel: c2
  RMAN-00569: = error message stack follows =.
  RMAN-03002: failure during the compilation of command
  RMAN-03013: type command: backup
  RMAN-06089: journal archived F:\ARCHIVE\ARCH1_0000327116.ARC not found or at odds with catalog
  
  Complete recovery manager.
  
  RMAN is looking for the destination of the journal archive old i.e. 'f:\archive\ '. I don't have the backup of the old archives of destination. I put the new destination to archive E:\archive\ in the initorcl.ora file, rman is always looking for destination F:\archive\.
  
  Please suggest what to do. How can I remove old information from archive of controlfile and say rman, look in the new archives destination i.e. E:\archive\

  Hello
  WOW 8.0.6.
  Maybe you can run a cross?

  change archivelog than any overlap;

  Update
  Found some docs online for 8.0
  http://download.Oracle.com/docs/CD/A58617_01/server.804/a58396/TOC.htm
  She does not mention the overlap.
  With the change command, you should be able to do the cleaning as well.
  If you have moved the archivelogs to the new location, you can use catalog according to the doc.
  Kind regards
  Tycho

  Edited by: tychos on mrt-27-2011 08:26

• A development database hot backup

  RDBMS version: 10.2.0.4
  Operating system: Solaris 5.10
  
  One of our development database is in NOARCHIVELOG mode, and we want to keep it this way. Every Sunday, we want to make a complete this DB RMAN backup. Since developers (WE, India, China) could be working from home on Sunday and need to connect to the DB, we cannot stop this DB. I think to create a hot RMAN backup script that will be

  1. Place the DB in ARCHIVELOG mode temporarily
  2. Startup (OPEN) the DB and Take a FULL BACKUP including the archive logs with a script
   run {
   allocate channel m1 TYPE DISK connect 'sys/fls'  FORMAT   '/u05/rbkp/ptcp_%U.rmb';
   backup as compressed backupset database tag 'full'  plus archivelog; 
  }
  
  3. After the Hot backup is done, the shell script should place the DB in MOUNT stage and revert back to NOARCHIVELOG mode   and startup

  The RMAN full backup taken using the strategy above held for restoration and recovery?
  
  I can't put the commands for the placement of the DB in ARCHIVELOG mode in the RMAN run block. I can?

  You have a valid backup, but you will not be able to perform a FULL restore. You said that you will return noarchivelog mode after the backup. When your database requires recovery of the media in this mode, you will have more often a gap between the last saved archivelog and real online newspaper. If you can only make one point incomplete recovery - until the last archivelog available in the backupset.

  Werner

• Hot backup - recovery time

  I have 2 questions about the hot backup concept please:
  
  Let's say I started the backup to hot at 09:00 and ends at 11:00.
  
  (1) I can recover the database to the point of 09:00 and on (recover until time) as long as I have all archive logs generated between 9 and 11:00, right?
  
  (2) I can restore database to the top at 11:30 so if I have logs archiving between 09:00 and 11:30?
  
  Please correct me if I'm wrong.
  
  Thank you

  The backup of the Data2 began at 10:01, but you must recover the database at 09:29. You can only do if you restore time data1 data2 (and all the other data files!) a prior backup archivelogs and applied the backup and roll forward at 09:29.

  Hemant K Collette

• More redo generation during hot backup

  Hi all
  I want to know more over the generation of redo during hot backup.
  I know that in this case the data file headers are frozen. But I want to know how the whole thing goes. All did this experiment practically?
  Did any problems of performance because of this?
  
  
  
  Thank you
  Rafi.

  Hmm well, it basically means like this, assuming you have a block filled with 1s like that,

  ----
  1
  ----
  1
  ----
  1
  ----
  

  And this is the copy of the block that was sent to the backup by you and was taken over by the command cp o/s. While the cp command will make a backup of the block as it can be read much more small piece that, suppose that he would start with the 1st part of the block and starts copying to the o/s somewhere. At the same time feel, DBWR peaks upwards again and written on block 2, like that.

  ----
  1
  ----
  2
  ----
  1
  ----
  

  It can from the flie is always online and is available to be used by the database. Now, you have a problem. The image you sent for backup isn't th that is here now. Next time what cp command would return, he would find 2 instead of one in the 2nd part of blok and copy it since it is a mute command when comes to oracle. So now that you have in what you wanted in the backup and the backup are not the same images. You have a cracked now block which is of no use for the recovery. To this end, in the case of the hot backup, the first image of the block time is copied and is maintained. This saves us from the State to have 2 there. We have all the 1s who sent us. Now, if in the case, dbwr also changes the block, the original help oracle reover the block properly.

  HTH
  Aman...

• What happens to the hot manual Tablespace backup operation, if...?

  What happens to the hot Tablespace backup operation, if a space of tables in the database is not backed up?
  
  Suppose if my database has 15 spaces for storage, I started the tablespace hotbackup by using the command "Alter Tablespace Begin Backup < tblsname >" & one by a tablespace in backup.
  If I backup a tablespace in the database, what happens to hot from the backup operation? It ends with success or failure?
  
  Published by: 874458 on November 7, 2011 20:41

  If the tablespace is completely self-contained, and then a recovery operation would increase for her.

  If things point back and forth between this tablespace and others, you could be in deep Doo - Doo.

  But if you have all available archived logs when save you it, it may be possible to recover. I remember that MOS has a doc on how to recover a tablespace never backed up, entirely from archived logs.

  It depends on. What is failure?

  Use RMAN, anyway.

• UNDOTABLESPACE and TABLESPACE TEMP in cold or hot backup database

  Hello
  
  I have a BACKUP, including logs generated after the backup archive. What is the use of the UNDOTABLESPACE and TABLESPACE TEMP datafile data file backup? When it is used?
  
  
  Kind regards
  
  007

  >
  I have the archives which have all entries are committed in it. Undoinformation is necessary for the restoration and recovery of the database? Can u explain more clearly?
  >

  The archives are as congested entries of redo logs. And the redo logs contain all changes to the database. Information cancellation will be there in the segments of cancellation that there can be some uncommitted transactions active in the segments of cancellation. Cancellation information is necessary to put the database in a consistent state. It is one of very important storage similar to the control file and system tablespace to bring a database

  Edited: Imagine a scenario. You make a backup hot at 07:00. And there are a lot of transactions happening before and during hot backup. For ex, I run a massive update to a table. This will cause the recovery to write logs of recovery that will be eventually written to logs archived. Now, you finish the backup mode. But I have not validated or cancelled my transaction. Say to the reasoning, I roll back the transaction.

  Now, you restore the backup. Do you think that my transaction will be in inconsistent state? Redo logs and archiveed newspapers had my transaction changes/redo entries. If you are not using undo in recovery segments, what will happen to my operation that I rolled back? Without cancel, half of my transaction (even if they were not truly committed) will be sitting in the database. This is where undo tablespace helps us in rolling back the transaction during your recovery. Remember, the cancellation information "peuvent" not all in recovery if you do not a complete database recovery. But Oracle should know that. If you need to undo tablespace in your backup set.

  I hope it's clear now

  Published by: VenkatB on Sep 15, 2011 10:17

• How to exclude a table of the RMAN backup full

  Hi people,
  
  I'm working on 10g (10.2.0.4) on Windows 2003 (32 bit) environment.
  
  I want to exclude a table while taking the full backup RMAN... is possible, if so, how... ?
  
  Please enlighten us...
  I appriciate your quick response.
  
  Thank you
  Rambeau

  Raghu Bandla wrote:
  Hi people,

  I'm working on 10g (10.2.0.4) on Windows 2003 (32 bit) environment.

  I want to exclude a table while taking the full backup RMAN... is possible, if so, how... ?

  Please enlighten us...
  I appriciate your quick response.

  Thank you
  Rambeau

  It is not possible to treat the logical structure of RMAN database. As you cann't backup or restore specific table or a view with RMAN, cann't exclude you too

  But you have only one option: move this specific table to new tablespace and exclude this backup tablespace

  Published by: Kamran Agayev, a., September 24, 2009 17:27