Should we backup Archivelogs special cold backups?

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  I have a little, no doubt simple, issues.

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  1 it is not better to close the database. RMAN is an online backup tool, your backup will be consitent without worrying if your database is open or not.

  2 you should always backup your archivelogs. Why do play you with your database recovery.

  Don't forget the two laws of Murphy

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  2 Murphy was an optimist

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  --------

  Sybrand Bakker

  Senior Oracle DBA

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  Hi all

  11.2.0.1

  I review the output of the trace file, because I want to simulate or test this process.

  This file has two (2) sets of command. one (1) for online newspapers intact and one (1) to damage newspapers online.

  Issues related to the:

  1. What do you mean by damage, newspapers online. does that mean I lost all these redo files:

  LOGFILE

  GROUP 1 ' D:\APP\PROD\ORADATA\ORCL\REDO01. NEWSPAPER "SIZE 50 M 512 BLOCKSIZE,

  GROUP 2 ' D:\APP\PROD\ORADATA\ORCL\REDO02. NEWSPAPER "SIZE 50 M 512 BLOCKSIZE,

  GROUP 3 ' D:\APP\PROD\ORADATA\ORCL\REDO03. NEWSPAPER "SIZE 50 M BLOCKSIZE 512

  
  

  2. Why is that the two (2) are still set up orders? with the exception of the backup controlfile and open resetlogs?

  3. should I backup RMAN to perform this recovery statements?

  
  

  Thank you

  pK
  

  ========

  -Here's current system-scope REDO Log archiving related

  -parameters and can be included in the database initialization file.

  --

  -LOG_ARCHIVE_DEST = "

  -LOG_ARCHIVE_DUPLEX_DEST = "

  --

  --LOG_ARCHIVE_FORMAT=ARC%S_%R.%T

  --

  -DB_UNIQUE_NAME = "orcl".

  --

  -LOG_ARCHIVE_CONFIG =' SEND, RECEIVE, NODG_CONFIG'

  -LOG_ARCHIVE_MAX_PROCESSES = 4

  -STANDBY_FILE_MANAGEMENT = MANUAL

  --STANDBY_ARCHIVE_DEST=%ORACLE_HOME%\RDBMS

  -FAL_CLIENT = "

  -FAL_SERVER = "

  --

  -LOG_ARCHIVE_DEST_1 =' LOCATION = USE_DB_RECOVERY_FILE_DEST'

  -LOG_ARCHIVE_DEST_1 = "NODELAY MANDATORY NOREOPEN.

  -LOG_ARCHIVE_DEST_1 = 'NOAFFIRM ARCH ACCELERATE NOVERIFY SYNC'

  -LOG_ARCHIVE_DEST_1 = 'NOREGISTER NOALTERNATE NODEPENDENCY.

  -LOG_ARCHIVE_DEST_1 = 'NOMAX_FAILURE NOQUOTA_SIZE NOQUOTA_USED NODB_UNIQUE_NAME.

  -LOG_ARCHIVE_DEST_1 = 'VALID_FOR = (PRIMARY_ROLE, ONLINE_LOGFILES)'

  -LOG_ARCHIVE_DEST_STATE_1 = ENABLE

  --

  -Here are two sets of SQL statements, each of them creates a new

  -control file and use it to open the database. The first series opens

  -the database with the NORESETLOGS option and should be used only if

  -the current versions of all online newspapers are available. The second

  -together opens the database with the RESETLOGS option and should be used

  -If online newspapers are not available.

  -All appropriate declarations that can be copied from the trace to

  -a script file, edited as necessary and executed when there is a

  -need to re - create the control file.

  --

  -Set #1. NORESETLOGS case

  --

  -The following commands will create a new control file and use

  -to open the database.

  -The data used by the Recovery Manager will be lost.

  -Additional logs may be required for media recovery of offline

  -Use this option only if the current versions of all online newspapers are

  -available.

  -After mounting the controlfile created, the following SQL code

  -Statement will place the database in case

  -protection mode:

  -ALTER DATABASE BASE_DE_DONNEES ENSURES TOGETHER TO OPTIMIZE PERFORMANCE

  STARTUP NOMOUNT

  CREATE CONTROLFILE REUSE DATABASE "ORCL" NORESETLOGS NOARCHIVELOG

  MAXLOGFILES 16

  MAXLOGMEMBERS 3

  MAXDATAFILES 100

  MAXINSTANCES 8

  MAXLOGHISTORY 292

  LOGFILE

  GROUP 1 ' D:\APP\PROD\ORADATA\ORCL\REDO01. NEWSPAPER "SIZE 50 M 512 BLOCKSIZE,

  GROUP 2 ' D:\APP\PROD\ORADATA\ORCL\REDO02. NEWSPAPER "SIZE 50 M 512 BLOCKSIZE,

  GROUP 3 ' D:\APP\PROD\ORADATA\ORCL\REDO03. NEWSPAPER "SIZE 50 M BLOCKSIZE 512

  -STANDBY LOGFILE

  DATA FILE

  ' D:\APP\PROD\ORADATA\ORCL\SYSTEM01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\SYSAUX01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\UNDOTBS01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\USERS01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\EXAMPLE01. DBF'

  WE8MSWIN1252 CHARACTER SET

  ;

  -Orders to recreate the table of the incarnation

  -Under journal names MUST be replaced by names of existing files

  -disc. The log files from each branch can be used for

  -re - create the folders of the incarnation.

  -REGISTRY ALTER DATABASE LOG FILE ' D:\APP\PROD\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_12_26\O1_MF_1_1_%U_. ARC'.

  -REGISTRY ALTER DATABASE LOG FILE ' D:\APP\PROD\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_12_26\O1_MF_1_1_%U_. ARC'.

  -Recovery is required if any of the data files are restored backups.

  - or if the last shutdown was not normal or immediate.

  RECOVER THE DATABASE

  -Database can now be opened normally.

  ALTER DATABASE OPEN;

  -Commands to add tempfiles to temporary storage.

  -Online Tempfiles have complete space information.

  -Other tempfiles may require an adjustment.

  ALTER TABLESPACE TEMP ADD TEMPFILE ' D:\APP\PROD\ORADATA\ORCL\TEMP01. DBF'

  SIZE 20971520 REUSE AUTOEXTEND ON NEXT 655360 32767M MAXSIZE;

  -End of tempfile additions.

  --

  -Set #2. RESETLOGS case

  --

  -The following commands will create a new control file and use

  -to open the database.

  -The data used by the Recovery Manager will be lost.

  -The content of online newspapers will be lost and all backups

  -be invalidated. Use this option only if online newspapers are damaged.

  -After mounting the controlfile created, the following SQL code

  -Statement will place the database in case

  -protection mode:

  -ALTER DATABASE BASE_DE_DONNEES ENSURES TOGETHER TO OPTIMIZE PERFORMANCE

  STARTUP NOMOUNT

  CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS NOARCHIVELOG

  MAXLOGFILES 16

  MAXLOGMEMBERS 3

  MAXDATAFILES 100

  MAXINSTANCES 8

  MAXLOGHISTORY 292

  LOGFILE

  GROUP 1 ' D:\APP\PROD\ORADATA\ORCL\REDO01. NEWSPAPER "SIZE 50 M 512 BLOCKSIZE,

  GROUP 2 ' D:\APP\PROD\ORADATA\ORCL\REDO02. NEWSPAPER "SIZE 50 M 512 BLOCKSIZE,

  GROUP 3 ' D:\APP\PROD\ORADATA\ORCL\REDO03. NEWSPAPER "SIZE 50 M BLOCKSIZE 512

  -STANDBY LOGFILE

  DATA FILE

  ' D:\APP\PROD\ORADATA\ORCL\SYSTEM01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\SYSAUX01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\UNDOTBS01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\USERS01. DBF',.

  ' D:\APP\PROD\ORADATA\ORCL\EXAMPLE01. DBF'

  WE8MSWIN1252 CHARACTER SET

  ;

  -Orders to recreate the table of the incarnation

  -Under journal names MUST be replaced by names of existing files

  -disc. The log files from each branch can be used for

  -re - create the folders of the incarnation.

  -REGISTRY ALTER DATABASE LOG FILE ' D:\APP\PROD\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_12_26\O1_MF_1_1_%U_. ARC'.

  -REGISTRY ALTER DATABASE LOG FILE ' D:\APP\PROD\FLASH_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_12_26\O1_MF_1_1_%U_. ARC'.

  -Recovery is required if any of the data files are restored backups.

  - or if the last shutdown was not normal or immediate.

  RECOVER DATABASE USING BACKUP CONTROLFILE

  -Database can now be opened to zero online newspapers.

  ALTER DATABASE OPEN RESETLOGS;

  -Commands to add tempfiles to temporary storage.

  -Online Tempfiles have complete space information.

  -Other tempfiles may require an adjustment.

  ALTER TABLESPACE TEMP ADD TEMPFILE ' D:\APP\PROD\ORADATA\ORCL\TEMP01. DBF'

  SIZE 20971520 REUSE AUTOEXTEND ON NEXT 655360 32767M MAXSIZE;

  -End of tempfile additions.

  --

  ===============,

  Hello

  According to the Oracle Documentation:

  RESETLOGS specify RESETLOGS if you want Oracle database to ignore the content of the files listed in the LOGFILE clause. These files do not have to exist. Each redo_log_file_spec in the LOGFILE clause must specify the SIZE parameter. The database assigns redo all online log file groups to thread 1 and enables this thread for public use by any instance. After using this clause, you must open the database by using the ALTER DATABASE statement RESETLOGS clause.

  NORESETLOGS NORESETLOGS to specify if you want the Oracle server to use all files in the LOGFILE clause as they were when the database was last open. These files must exist and must be the online redo logs rather that restore backups. The database reassigns log files groups redo the nets to which they were previously assigned and re-active threads as they authorized beforehand.

  With RESETLOGS you're going to have a new incarnation of the database and are used when you perform incomplete recovery when you do not have full recovery stack to perform a full restore.

  Do I need a backup RMAN to test this statement?

  No, 'must' use RMAN. You can perform a recovery by the managed user. Personally its always preferable to use RMAN, but if you aren't aware of the working RMAN you can go forward with the managed user.

  Kind regards

  Suntrupth

• ORA-01194 and ORA-00604 when using backup controlfile set #2

  Oracle 11.2.0.1 database version
  Enterprise Linux 5.4
  Database is in archivelog mode.
  
  I'm trying to recover a database according to a backup controlfile to trace #2. Create the controlfile works very well, but recover the database fails.
  
  From what I understand, the recovery fails because it cannot roll forward - 39 sequence is in the online missing redo log file. However, the database opens with the restlogs option and I understand that it should use the archivelogs in order to roll back. Since it is a new controlfile he does not know the archivelogs, but he does not accept to register or use archivelog files.
  
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  SQL>  CREATE CONTROLFILE REUSE DATABASE "RCAT" RESETLOGS  ARCHIVELOG etc.
  Control file created.
  
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  SQL>  ALTER DATABASE REGISTER LOGFILE '/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc';
   ALTER DATABASE REGISTER LOGFILE '/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc'
  *
  ERROR at line 1:
  ORA-00604: error occurred at recursive SQL level
  
  
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  Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
  /u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc
  ORA-00310: archived log contains sequence 33; sequence 39 required
  ORA-00334: archived log:
  '/u02/fra/RCAT/archivelog/2010_09_19/o1_mf_1_33_69bfo5tx_.arc'
  
  
  ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
  ORA-01194: file 1 needs more recovery to be consistent
  ORA-01110: data file 1: '/u02/RCAT/datafile/o1_mf_system_6959kz7l_.dbf'
  
  
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  -rw-r----- 1 oracle dba 49313280 Sep 19 00:01 o1_mf_1_33_69bfo5tx_.arc
  -rw-r----- 1 oracle dba   312320 Sep 19 00:03 o1_mf_1_34_69bft63b_.arc
  -rw-r----- 1 oracle dba 20343808 Sep 19 02:10 o1_mf_1_35_69bo6y6j_.arc
  -rw-r----- 1 oracle dba    40960 Sep 19 02:12 o1_mf_1_36_69boc9t8_.arc
  -rw-r----- 1 oracle dba    20992 Sep 19 02:13 o1_mf_1_37_69bofng4_.arc
  -rw-r----- 1 oracle dba   794624 Sep 19 02:15 o1_mf_1_38_69bokwbf_.arc

  Thank you
  Markus

  Markus Waldorf wrote:
  I think that I am aware and do not suggest to use the hidden setting.

  What worries me is that the value #2 of the controlfile to trace the contours of the database backup can be recovered even with the lack of recovery online newspapers, but apparently this is not the case. What I also don't understand, is why he simply not restore using the information of the archivelogs. The database was not shut down properly, but isn't always the case when you lose again-online newspapers?

  Here is the text of the controlfile.sql

  -Set #2. RESETLOGS case
  --
  -The following commands will create a new control file and use
  -to open the database.
  -The data used by the Recovery Manager will be lost.
  -The content of online newspapers will be lost and all backups
  -be invalidated. Use this option only if online newspapers are damaged.

  Published by: Markus Waldorf Sep 20, 2010 09:34

  You are right. But it is especially the case.perform, create the new database and will stop immediately (without demolition) and remove newspapers online OS level. And try to recover the database using backup controlfile until cancel or just recover database until cancel then enter Word Cancel and resetlogs option database open. It will work. Because it actually do not need any recovery operation. But your case you need to recover the database. You consider backup restore las and perform incomplete recovery. I think you can do the first test.

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