cold backup

Similar Questions

• How Controlfile SNA remain synchronized after moving the database with the cold backup

  Hello DBAs,

  I doubt that:

  Every time you pass a cold backup database. We create a new controlfile with new locations of data/redologs etc.

  And then we execute "create controlfile reuse...". noresetlogs...; "to create the controlfile.

  After that, we will open the database as > > alter database open;

  Now the question is:

  We are able to open the database without clause "resetlogs.

  Here, we create a new controlfile so SNA to controlfile will not be synchronized with the SCN of the datafile and redo the file.

  Please let me know how the new controlfiles' SNA is synchronized with the data file and redofile and wea are able to open the database without resetlogs clause.

  Oracle: 11.2.0.4

  OS: Linux

  If your cold backup also includes online redo logs, a RESETLOGS is not necessary.

  The controlfile is created if it does not have a SNA, it reads the data file headers the YVERT database. For a cold backup, all the headers of data file are consistent.  (This is also the reason why a RECOVERY is not required).

  Hemant K Collette

• Cold backup RMAN

  Basically I ask this question for a problem surrounding in another thread, but here go us:

  Suppose we take a COLD backup. I know, not something directly related with RMAN, but further action is:

  This guy says: I take a backup to cold, I copy the files to another server, on which he has made the necessary in order to start this database.

  But then, since the backup and the time of the action above, time is up.

  So, there are archived redologs... because the database is in archivelog mode.

  And he wants to do what is obvious: use these Redos archived, to update the database at a later stage in time.

  To be clear; the Oder archived are created by the source database. The target database has been copied and started, nothing else.

  If the backup is a backup hot, without issue. But because the backup is cold, it is not possible, right?

  My idea is that he must also take a hot backup, in addition.

  I asked already, and despite the execution of the database in archivelog mode, the backup must be taken cold, backup mode for some reason. It is probably the old method, who they now want to just add redolog recovery, but without change from cold to hot.

  At some point, RMAN must be running, of course.

  I guess that RMAN is used for the entire operation, not "at some point" (I see no reason not to).

  The cold food at the start is to make a clone. THEN, the question is asked, but can we also restore to a point more recent in time?

  Yes, you can recover the "clone" until a more recent point in time as long as you do not OPEN it, and you have all necessary archivelogs. The sequence:

  1 startup nomount

  2 restore controlfile

  3. change the editing of the database

  4 restore your cold backup (do not open the database)

  5. If necessary, catalogue archivelog backups

  6 back to the desired point in time

  7. alter database open resetlogs.

  But I repeat, why did you stop your databases, if that is not necessary? (of course I think of my dozens of databases 24 x 7).

• Recover the database by using cold backup

  Hi all

  One of the table is deleted accidentally by one of our DBA of PROD. We have a backup to cold on a day before.

  Now, we try to restore from the backup to cold. DB PROD is in archivelog and all the archives are in tact.

  The resulting table truncated today at 20:00. We can apply the database until 20:00 so that we can restore the table truncated using cold backup.

  Please find the steps we use to restore below.

  create controlfile

  from the db in State of Mt.

  recover the database;

  It will ask for last log archive when we try to get it back.

  ENV details-

  DB - 11.2.0.1

  Please suggest.

  Thank you

  create controlfile

  from the db in State of Mt.

  recover the database;

  This method is not correct. Here are the four steps for incomplete recovery (which is what you need):

  Mount the database

  restore all data files

  recover the database up to the...

  ALTER database open resetlogs

  Your DBA (who say you was responsible for the error) will be familiar with the routine. Or it should be.

• Restore database from a cold backup

  Hi all

  We use Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 on SunOS 5.11.

  We have a database of primary and physical standby.

  We used to catch a cold backup of database pending. Now we want to restore the cold backup and as primary (scénarion of building our database main and backup have been planted and we have cold backup standby?.)

  We have done following the steps.

  1 copy the cold backup on server

  2. Mount the backup database

  3. perform the pint in time recover by issuing the fllowing command

  to recover a database on hold until cancel;

  4. apply some archived files and then CANCEL

  5 issue command to change the mode as "THE PRIMARY", as a result

  ALTER database recover managed standby database finish; and received followig error (alert log file)

  " Sun Aug 18 14:39:42 2013

  Logmerger died, by closing parallel recovery slaves

  Sun Aug 18 14:40:16 2013

  Death of recovery slave PR00

  Sun Aug 18 14:40:24 2013

  Interruption recovery! »

  We successfully restore the database and swithover the primary status after completing the steps:

  1. Cold backup on server
  2. Mount the database on hold
  3. Perform the recovery point in time by issuing the fllowing command
     1. recover database until cancel; pending
     2. Applied some files and then CANCEL
  4. Delete the log files waiting for redo
     1. change the Group of clear database logfile
  5. Recovery of eve of finishing
     1. ALTER database recover managed standby database finish;
  6. Issue following command to change the mode of "PRIMARY."
     1. change the database for validation to the passage at the elementary level with the end of the session;
  7. Open database
     1. ALTER database open;
  8. The redo log files
     1. Alter system switch logfile;
  9. Restart the database

  Earlier, we had missed step # 4.

  Kind regards

  Hassan

• Need for clarification for cold backup and restore

  Hi all...
  
  I have a lot of confusion about the cold backup and restore section.
  
  Already I posted a scanario this topic and I would like to know a few points of clarity to understand.
  
  
  1. I had cold backup two days before
  2. I create an object * (EMP) * and inserting some records can deliver log switch continiously.
  3. manually I deleted all the physical files (data files, files of control, files, papers, redolog files)
  4. then I published STARTING FORCE MOUNT;
  5. in this case, I get error identification control file.
  6. cold two days before all of the restored files backup
  6 then I run database recovery using backup controlfile until cancel;
  7. I'm issuing select * from emp; I get error

  select * from EMP
  * ERROR at line 1:
  ORA-00942: table or view does not exist

  my QUESTION IS
  
  After that cold backup is complete, I created the table emp...
  during the restoration of old back "there is no emp table"
  
  * - Then I can retrieve table emp? -If Yes, please explain about this... *.
  
  
  Note: REF - LINK https://forums.oracle.com/forums/message.jspa?messageID=11056341#11056341
  
  -Link above says what I did? In this thread, I ask you to concept and logic...
  
  Please, consider NOT like ' * DOUBLE. "

  Not sure why you're confusing this issue? In your other thread, you applied a backup who had two days and there is no evidence that you apply to this log file to archive that had the table create in it. So if you have not restored this log file to archive who had your create table command, it will not be recovered. The most important for you to understand, it's that you have to have the newspaper the point for which you want to retrieve other archiving your recovery will not be able to move forward.

  Aman...

• Re: is the cold backup of rman includes onlinde redologs?

  Hello
  
  cold backup of rman includes onlinde redologs?
  
  So that at the time of the recovery when I restore the database the redologs online also restored at this point?
  
  Please, please add your suggestions. I read in 10g database in condition to mount everything taking the backup RMAN as cold as the oracle process overall are down we cannot copy the redologs online.
  Am I correct, otherwise please someone answer me why the redologs online are not copied.
  
  Thanks in advance
  SAI

  A cold backup (i.e., MOUNT but not given) to RMAN does not backup online redo logs.

  If you restore this backup you will need OPEN RESETLOGS to recreate the online redo logs to the target.

  Hemant K Collette

  PS: Oracle Documentation prefers to call an RMAN backup backs "Cohérent" when the database is mounted but the State is not OPEN. "Cold Backup" is today used for the non-RMAN methods.

  Published by: Hemant K Collette on 8 January 2013 11:47
  Added PS

• cold backup of rman includes onlinde redologs?

  Hello
  
  cold backup of rman includes onlinde redologs?
  
  So that at the time of the recovery when I restore the database the redologs online also restored at this point?
  
  I reason,.
  
  Thanks to advanced
  Sairanga

  RMAN never backup online redo logs.

  If you ever need to restore a database that had been saved cold with rman, you'd end up working with an alter database open resetlogs, which will create newspapers online brand new, empty.

• Cold backup of database primary affect DR sync

  Hello
  
  We have some 10gr 2 DR of installation,
  
  We are planning for the cold primary database backup on every Sunday.
  
  It's going to affect DR sync if the primary database is not available at the time of the cold backup.
  
  Thank you

  No Impact

  Check
  Cold RMAN copy backup of database primary Data Guard

• Cold backup of primary affects DR

  Hello
  
  We have some 10gr 2 DR of installation,
  
  We are planning for the cold primary database backup on every Sunday.
  
  It's going to affect DR sync if the primary database is not available at the time of the cold backup.
  
  
  Thank you

  Hello

  It wouldn't affect the sync of DR. You perform the backup to cold, there is no generation of archives and would not be a out of sync of so the Dominican Republic.

  Please, do not create multiple messages. Please mark this of cold backup of database synchronization primary affect DR as answer and continue with your messages on the current thread.

  Kind regards
  Shivananda

• RAC RAC CLONE OF RMAN cold backup

  Hi all
  
  I need your help in my Oracle RAC 11.2.0.2 to remote host environment cloning. Here's the disc structure
  
  DGVOT (disc ASM holding OCR and voting disk group)
  DGDATA (disk group ASM containing data files)
  DGFRA (disk group ASM files for fast recovery)
  
  Remote host is on a different location so cannot use duplicate RMAN with auxiliary channel.
  Have the luxury of downtime so I wanted to take coherent RMAN (Cold Backup)
  
  SAME structure of the disc is available on remote hosts.
  
  11.2.0.2 CLusterware (IG) over the oracle binaries are already installed.
  
  Can any body tell me the steps to
  (1) how to take cold backup on the disk so that I can tar and copy to the remote host
  (2) clone of the database on the remote host
  (3) how do I add the listener for the database and other resources of this databasee clusterware.
  
  in fact, it's my first clone CARS, so I'm well aware of the steps in detail.
  
  
  I went though a lot of notes metalink but nobody fits my needs. your tips will help me a lot
  
  Kind regards

  Hello

  (1) how to take cold backup on disk so that I can tar and copy to the remote host.

  Use Rman cold backup

  At the stage of the mountain run
  RMAN > backup database archivelog format '%U /dbp ";
  RMAN > backup controlfile current format "%U /ctl";

  Copy these to the remote host backup sets

  (2) clone of the database on the remote host

  Create groups of similar ASM disk as source
  create pfile/spifile, starting in nomount mode instance
  backup set from catalog

  RMAN > catalogue start with "";

  Restore controlfile

  RMAN > restore controlfile;

  RMAN > restore database;

  RMAN > restore database;

  On the success of the recovery

  RMAN > sql 'alter database open;

  (3) how do I add the listener for the database and other resources of this databasee clusterware.

  Srvctl user to add resources

  Use: srvctl

• Cold backup with online redo logs

  I'm working on 10G in AIX for a single instance
  It's just a general db backup & restore issue, but I have something confused.
  
  I'll take a cold backup with my database ARCHIVELOG.
  No wonder why make a backup of cold because it's a test database that can suffer from loss of data and the time during backup.
  I read some guides. They all mentioned to back up all the data files and control files.
  When restoring I copy all saved data files and control files to the default location.
  Then mount boot;
  Is the last step before opening the database recover database until cancel;
  For the acknowledgement, I do the database recovery command, because again the online newspapers were not saved, so we must recover in order to reset the redo logs.
  For my question, I would be in a position of order recovery of database, then directly the database starts, if I backed up online redo logs and copy the default location when restoring?
  However, I have read a lot of documents that mentions that it is not proposed to backup online redo logs. Is it simply the case that ONLY applied in the backup hot? Do you think all that for my case, cold backup online redo logs is recommended?
  
  Thank you all

  Hello

  read the response of Hemant ==> Re: restoration of noarchive

  Anand

• Should we backup Archivelogs special cold backups?

  B version: 11.2
  Version of the operating system: Solaris 5.10
  
  Here's the script that we use for ad-hoc cold backups. Is it necessary to take the backup of the archivelogs when we do the backup to cold?
  Size of the backup archivelog room is sometimes greater than the backup piece containing the full backup of the comic itself! Then lost too much disk space.
  
  The script that we use

  run
  {
  allocate channel t1 type disk;
  sql 'alter system archive log current';
  shutdown immediate;
  startup mount;
  backup  full database format='/mypath/ORCL_full_%U_%T.bkp' tag='ORCL_full';
  backup archivelog all tag='arch_bkp' format='/mypath/ORCL_BKP/arch_%U_%T.bkp' delete input;
  release channel t1;
  }

  Hello;

  A cold backup is a consistent state. If you do not have to save them. No new archived logs generated during the backup or if you're still OK.

  For other types of RMAN backup, you STILL want it. This ensures that backups of data taken when the command file is recoverable in a consistent state.

  Best regards

  mseberg

• It is advisable to apply and take cold backup daily

  Dear all,
  
  It is advisable to stop the entire application and take a cold backup on a daily basis and start the application after taking the backup to cold every day.
  
  Please advice...
  
  Thanks in advance...

  It is advisable to stop the entire application and take a cold backup on a daily basis and start the application after taking the backup to cold every day.

  For a backup to cold, it is a good practice (if you can afford downtime). However, it is always recommended to have a backup hot for you do not have to kill the application/database, and in this case you can consider having a backup to cold at least once a week (depends on what changes you make to the application level).

  Please see the old discussion https://forums.oracle.com/forums/search.jspa?threadID=&q=Backup&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001 that deal with the subject backup -

  Thank you
  Hussein

• Pre-upgrade cold backup

  DB version: 10.2.0.5
  Version of the operating system: Solaris
  
  We will upgrade of databases about 50 10.2.0.5 to 11.2.0.1
  
  Pre-staged at cold backup of the DBs 10.2.0.5 level, should use us regular cp command, OR should use us RMAN to take the backup to cold? What would you do?

  Hello

  We will upgrade of databases about 50 10.2.0.5 to 11.2.0.1

  Why not 11.2.0.2. The 11.2.0.2 version is more stable and much less bugs.

  Pre-staged at cold backup of the DBs 10.2.0.5 level, should use us regular cp command, OR should use us RMAN to take the backup to cold? What would you do?

  I do not recommend using cp because you cannot verify the integrity of the database and backup. RMAN is infinitely more advanced and have more resources than cp command.

  So I recommend...

  (1) conduct Validade database before backup. To check the integrity of the database
  (2) backup using RMAN 10.2.
  (3) update Perfom 11.2
  (4) to validate the database
  (5) backup database using RMAN 11.2 Perfom.

  We can ask why run the validation database... I recently upgraded from version 10.2.0.5 for 11.2.0.2 23 databases and some databases have been corrupted logical blocks after the upgrade.
  Just do the job safely and make sure that everything is ok

  Kind regards
  Levi Pereira