User managed backup and rman  oralce 10g

hi guys
what are the enhancement of user managed backup and rman in oralce 10g
would u pls tell me in understandable manner
thanks in advance

Hi,
what are the enhancement of user managed backup and rman in oralce 10g
would u pls tell me in understandable manneRefer below link
http://dbataj.blogspot.com/2008/05/rman-versus-user-managed-backup-part-i.html
Hope helps.
Regards,
X A H E E R

Similar Messages

  • User managed backup and recovery

    Hi
    i have a situation in Restore activity
    i have controlfile backup at feb 2010 during hot backup
    after few days of hot backup i have added some dbf files
    at jan 2011 my system is crashed and i have lost most of my files and archive logs
    now situation is i have archive log till sep 2010
    and control file contain dbf file till feb 2010 (missing 5 dbf fies created after hot backup)
    what should i do to reach at sep 2010
    Regards

    Hi,
    Jan 2010...feb 2010.................................................Sept 2010.............. jan 2011..feb 2011
               took hot backup
               control file also 
                                 some data added                           
                                                             crashed
                                                             lost all file
                                                             control and archives
                                                    Requirement
                                                    to reach sept
                                                    2010
                                                    Archives exist till this point
                                                    Try to restore the valid backup with good controlfile from feb2010. Start recovery and during recovery process the archives will get
    stopped applying the redo vectors on data files which are missing check from alert log file. rebounce.mount mode and add the data files
    start the recovery until cancel. Reset logs.
    What 's your db version ?
    - Pavan Kumar N

  • Rman And user Managed backup

    Hi,
    I have following question
    User Managed backup
    1)when i take user mananged backup i want to know whether DDL operation is permitted or not
    2) when i take user mananged backup i want to know whether WE ADD/REMOVE TABLESPACE ??
    Rman backup
    1)when i take RMAN backup i want to know whether DDL operation is permitted or not
    2) when i take Rman backup i want to know whether WE ADD/REMOVE TABLESPACE ??
    Regards

    Hi,
    Please go through the below links to get much familiar with user managed backup's and rman backup's.
    Oracle9i User-Managed Backup and Recovery Guide
    Release 2 (9.2)
    http://download.oracle.com/docs/cd/B10501_01/server.920/a96572/toc.htm
    Making User-Managed Backups
    http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/osbackup.htm
    Oracle9i Recovery Manager (RMAN)
    http://www.oracle-base.com/articles/9i/RecoveryManager9i.php
    RMAN Backup Concepts (11g R1)
    http://download.oracle.com/docs/cd/B28359_01/backup.111/b28270/rcmcncpt.htm
    Overview of RMAN Backups (10g R2)
    http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/bkup001.htm
    Oracle RMAN Backups: Pushing the "Easy" Button
    http://www.oracle.com/technetwork/articles/havewala-rman-grid-089150.html
    Hope this helps you understand clearly about both the user managed backups and rman backups. :)
    Thanks,
    Balaji K.

  • Doubt between RMAN and User Managed Backup

    Friends,
    OS: RHEL AS 3.0
    DB: 9iR2
    Currently we are taking user managed backup.
    rman is in testing(learning) process.
    Is it possible to take rman backup and user managed backup of a database one after another?
    what i mean is.....suppose, if we configure rman for auto backup at 9pm daily. can i take user managed backup before 8pm or after 10pm?
    Am i have to take any precaution's?
    suppose, rman is failed can i restore the db with user managed backup?
    thanks

    Yes, it is possible to perform both user managed backups and RMAN backups.
    It is a waste of resources, but it is possible.
    You would need to make sure both backups do not overlap each other.
    Whether you can restore your database with user managed backup depends completely on the quality of the user managed backup, and whether you have proper (and tested) restore procedures in place.
    Sybrand Bakker
    Senior Oracle DBA

  • DB Taken out of Backup Mode During User-Managed Backup

    I was taking a user-managed backup and the DB was accidentally taken out of backup mode in the middle of the backup. The backup continued and backed up all the datafiles, but many of the datafiles were backed up after backup mode was turned off. Can I restore the DB using this backup? What are my options?

    The backup might be usable and it might not. When you put a tablespace (actually all data files in the tablespace) into backup mode, Oracle continues to perform writes to those data files. However, when first modifying a block in a data file after it has been put in backup mode, Oracle will put a before image of that entire block in the redo log (instead of just the row changes). After this first data block change is written to the redo log, further changes to this data block are written as just normal. Oracle does this initial write of the whole block to prevent fractured blocks during recovery. You see, when the OS copies the files for backup, it copies in chunks that might, or might not, fall on a data block boundary. A data block may be updated on disk between two OS file copy chunks. Thus when the file is restored it is possible that part of a data block will have new data and another part have old. This is a fractured block. When applying undo, Oracle first lays down a full block, which will cure a possible fractured block, and then apply redo as normal to complete the recovery operation.
    This is why it is important to make sure that your hot backup set includes all redo generated between the time you put the tablespaces in backup mode and the time you took them out of backup mode.

  • User-managed backups of a 10g DB using ASM

    Is it possible to do user-managed backups of a 10g database which is using ASM?
    When I run the following SQL command
    SELECT NAME FROM v$datafile;
    It returns
    +DBDATA/db_test/datafile/system.256.617633575
    +DBDATA/db_test/datafile/users.259.617633757
    The ASM is setup in 'normal redundency' across 2 partitions, both of which are not formatted.
    If there is anyone who has done user-mangaged backups on a 10g DB using ASM who could provide an insight I would be greatful.
    Basically what I would like to know is how do I access the datafiles, so I can back them up to a location of my choosing?

    I think it's a good product, we use it for many years now. A big advantage is Backtrack automates not only backups (that do all products), it also provides automatic restore/recovery in many cases (not in all!). That means the product detects what is wrong with the database and automatically performs all necessary steps to bring back the database to working. In case of trouble that's good for operators by night and also good for the DBA, who does not need to come.
    Disadvantage (may be true for all 3rd party products) Backtrack is always behind Oracle's newest technology, so it took some time to support ASM and it's still not a full support.
    There's no problem with online backups, Backtrack uses the traditional way (ALTER TABLESPACE BEGIN BACKUP .... END BACKUP), they don't use RMAN technology in the background.
    We use both in our company, Backtrack and RMAN. Besides the technical point of view, there's also a license issue. Backtrack's license fee is due to amount of data, the larger your databases the larger the fee.
    Werner

  • User managed coldbkp vs rman cold backup

    Hi,
    I confused about rman cold backup in no catalog mode while restore the backup.please anyone clarify it.
    1,I am not confused about user manged cold backup.I took the backup (spfile,control file,redo file,datafile,password file.)Is it right one?
    2,In rman cold backup in no catalog mod, we used backup sets for backup,control file is autobackup is enabled.
    The backup set format is not OS format.The backup stored at flash recovery area.
    Just assume,
    I lost all files(spfile,control file,redo file,datafile,password file.)How to recover that.
    I am not able to identity spfile & control file in backupset in flash recovery area.
    How to identity the spfile,control file during the restoration?
    3,Rman takes the copy of online redo file in cold backup?
    If it's not,How to recover the database & in user managed backup,copy of online redo log file is must?
    4,What is the difference between dbid & sid?when it is used?
    5,Can i specifty format for spfile when i take the backup? can i use trace file(control file ) for restoration?
    I read the oracle documents, but I am not understand the above things clearly.please anyone rectify it.

    user3266490 wrote:
    Hi,
    I confused about rman cold backup in no catalog mode while restore the backup.please anyone clarify it.
    1,I am not confused about user manged cold backup.I took the backup (spfile,control file,redo file,datafile,password file.)Is it right one?
    Yes,you are right,but first need SHUTDOWN IMMEDIATE;
    >
    2,In rman cold backup in no catalog mod, we used backup sets for backup,control file is autobackup is enabled.
    The backup set format is not OS format.The backup stored at flash recovery area.
    If you do not explicitly configured rman then yes it will backup to FRA.
    Just assume,
    I lost all files(spfile,control file,redo file,datafile,password file.)How to recover that.
    First need SET (EXPORT) ORACLE_SID and then
    rman target /
    startup force nomount;
    restore spfile from 'autobackuplocation';
    startup force nomount;
    restore controlfile  from 'autobackuplocation';
    catalog start with 'backupandarchiveloglocation';
    restore database;
    recover database;
    alter database open resetlogs;
    I am not able to identity spfile & control file in backupset in flash recovery area.
    From rman you can execute LIST BACKUP or LIST BACKUP OF CONTROLFILE;
    How to identity the spfile,control file during the restoration?
    3,Rman takes the copy of online redo file in cold backup?No,RMAN do not backup online logs,due to this do not need.
    If it's not,How to recover the database & in user managed backup,copy of online redo log file is must?
    If cold backup then you can open database with resetlogs option and online logs will create automatically(if you did not copy this logs)
    >
    4,What is the difference between dbid & sid?when it is used?
    DBID is unique identify database in recovery catalog and using this you can restore controlfile easily.But SID is ORACLE_SID and identify instance.This is environment variable like ORACLE_HOME
    5,Can i specifty format for spfile when i take the backup? can i use trace file(control file ) for restoration?
    Yes you can identify format manually for spfile. ALTER DATABASE BACKUP CONTROLFILE TO TRACE ... this statement use to getting script for recreating controlfile again.So this is not backup and you can notuse for restoring controlfile.If you do not have a backup of controlfile and all datafilesd available then you can use this statement.
    I read the oracle documents, but I am not understand the above things clearly.please anyone rectify it.All these and with all situation clearly explained below doc
    http://download.oracle.com/docs/cd/E11882_01/backup.112/e10642/toc.htm

  • Is User-managed Backup&Recovery Useless Because of RMAN?

    Is user-managed backup&recovery method useless because of RMAN?

    Nice dicussion!
    Also, one has to remember that if your database is using ASM, RMAN is the only option for backup/restore/recover (atleast in 10g).
    Can SAN Snapshot/SplitMirroring be used to take a backup of database using ASM?
    --MM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

  • Droping and renaming tablespace druing hot user managed backup

    Will dropping and renaming of tablespace will have any effect if hot user managed backup of that db is in progress ?
    thanks in advance

    However, you will encounter a more serious issue because of the way DROP TABLESPACE works.
    Even if the DROP fails, the "INCLUDING CONTENTS" causes all segments to be dropped !!
    SQL> drop table ASSM_TABLE purge;
    Table dropped.
    SQL> create table ASSM_TABLE (pk_col number not null, descr_col  varchar2(30)) tablespace ASSM_TBS;
    Table created.
    SQL> create unique index ASSM_TABLE_PK on ASSM_TABLE (pk_col) tablespace ASSM_TBS;
    Index created.
    SQL> select segment_name, segment_type from user_segments where tablespace_name = 'ASSM_TBS';
    SEGMENT_NAME                   SEGMENT_TYPE
    ASSM_TABLE_PK                  INDEX
    ASSM_TABLE                     TABLE
    SQL> insert into ASSM_TABLE select rownum, 'ABCD ' || rownum from dual connect by level < 10;
    9 rows created.
    SQL> commit;
    Commit complete.
    SQL>
    SQL> connect / as sysdba
    Connected.
    SQL>
    SQL> alter tablespace ASSM_TBS begin backup;
    Tablespace altered.
    SQL> drop tablespace ASSM_TBS including contents and datafiles;
    drop tablespace ASSM_TBS including contents and datafiles
    ERROR at line 1:
    ORA-01150: cannot prevent writes - file 7 has online backup set
    ORA-01110: data file 7:
    'filename'
    SQL> connect hemant/hemant
    Connected.
    SQL> select segment_name, segment_type from user_segments where tablespace_name = 'ASSM_TBS';
    no rows selected
    SQL>  alter tablespace ASSM_TBS end backup
      2  /
    Tablespace altered.
    SQL>The DROP TABLESPACE failed but the contents did get dropped !
    Hemant K Chitale
    Edited by: Hemant K Chitale on Oct 7, 2011 2:41 PM

  • User Managed Backup audit reporting

    Customer is asking to give this information, i am wondering how i can get this , We are not using RMAN, User managed backups are being used, I am wondering if i can pull this information through data dictionar/dynamics views, if yes send me the queries plz
    Please provide the following information as it relates to the applicable system(s):
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    (b) Frequency performed, such as daily, weekly, full volume, differential or incremental.
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    Mithu,
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    There are not Oracle technical questions, rather when and how you did your backup and approve of such.
    Check the backup schedule and logfiles of your backup

  • User managed backup

    I am a newbie to Oracle. I am having a question regarding user managed hot backup. My oracle version is 11.2.0.2 and OS version is OEL.
    What will happen, if we perform User Managed Hot Backup without setting tablespaces in BEGIN BACKUP mode?

    aee649c3-9d9a-40a3-bd64-460990851489 wrote:
    I am a newbie to Oracle. I am having a question regarding user managed hot backup. My oracle version is 11.2.0.2 and OS version is OEL.
    What will happen, if we perform User Managed Hot Backup without setting tablespaces in BEGIN BACKUP mode?
    The bigger question is why you would do a user managed backup in the first place.  User managed backup means user managed recovery.  The oracle supplied utility for database backup is 'rman', and the 'r' stand for 'recovery' -- as in "Recovery Manager".  Not using rman to do your backups is akin to not using the spare tire, jack, and lug wrench that came with your car to fix a flat tire.
    ============================================================================
    BTW, it would be really helpful if you would go to your profile and give yourself a recognizable name.  It doesn't have to be your real name, just something that looks like a real name.  Who says my name is really Ed Stevens?  But at least when people see that on a message they have a known identity.  Unlike the system generated name of 'ed0f625b-6857-4956-9b66-da280b7cf3a2', which is like going to the pub with a bag over your head.
    ============================================================================

  • Open database user managed backup

    Hi
    during open database user managed backup does data is written in the datafile which is put in backup mode ?
    Please suggest
    Thanks
    Huzaifa

    huzaifa wrote:
    Hi
    during open database user managed backup does data is written in the datafile which is put in backup mode ?
    Please suggest
    Thanks
    HuzaifaWhen an 'alter tablespace begin backup' command is issued the datafiles that belong to the tablespace are marked as hot-backup-in-progress. The dirty databuffers in the database buffer cache that belong to the database files are written out to the files and the datafiles are checkpointed. The datafile headers are updated to the SCN captured when the begin backup is issued. The datafile headers are not updated until the 'alter tablespace end backup' command is issued; however, the datablock within the database files can continue to be read and updated. When the datafile is restored from a hot backup, the recovery will begin from the SCN captured during the begin backup is issued. All changes applied during the hot backup time period will be
    rolled forward from the redo logs.
    Regards,
    Teymur Hajiyev
    Oracle 10g Certified Master
    http://teymur-hajiyev.blogspot.com
    http://dba.az

  • How do I use DBV utility for User Managed Backup?

    Dear all! I am a student, studying RMAN and User Managed Backup. But I did not understand how to use the DBVerify utility to check a block or a backup of control file.What's command can I do?
    Thanks for your reply!

    DBV is a utility which workd with Oracle Datafiles not with controlfiles.
    controlfile can be always recreated by you, just issue in a time of backup:
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    Best Regards
    Krystian Zieja / mob

  • What files can be excluded from user-managed backup in noarchivelog mode?

    what files can be excluded from user-managed backup in noarchivelog mode?
    control files,
    sqlnet.ora file,
    tnsnames.ora,
    datafiles associated with read-only tablespaces,
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    ... and don't forget pfile or spfile... it can help too.
    Re: What are generally backed up during the backup?
    Nicolas.

  • User managed Backups

    We put tablespace/database offline, before taking backup , The user can't access that particular table/application in that time frame, right?
    what would be the suggestion to keep it online all the time with user managed backups?

    You are not supposed to put tablespaces offline. If your database is in archivelog mode hot backup mode is possible (online backup), which means your users don't have to logoff and access to the tablespaces and data is 24x7.
    Command to put tablespace in an online user managed backup is -archivelog- :
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    You perform the backup using your regular OS backup tool. Once it finishes, put back your tablespace in regular mode by declaring your backup is over. You may go ahead with next tablespace:
    SQL> ALTER TABLESPACE tablespace_name END BACKUP;
    ~ Madrid

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