Confusion of RMAN

Similar Questions

• confusion about rman restore

  Hello world
  I have some confusion about rman restore and recover procedures. I read doc available in this regard and google as well. A few more questions unanswered in my mind.
  1. do the restore backup command restore controlfile also alongwith datafiles.
  2 database is running in noarchivelog mode. Suppose one of say users.dbf data files has been removed. control files intact. the same seq # is available since the last log backup. Now to restore the database, I use the following steps.
  1 rman > shutdown immediate
  2 rman > startup mount
  3 rman > restore database
  4 rman > restore database
  5 rman > alter database open;
  
  I'm wrong. This is the one. In this scenario, the steps above can be used.
  
  3. even when logseq is not available when the database is saved, I take the following steps.
  1 rman > startup nomount;
  2 rman > restore controlfile autobackup.
  3 rman > change the editing of the database;
  4 rman > restore database;
  5 rman > recover noredo db;
  6 rman > alter database open resetlogs;
  It is a right. can I adopt this procedure in my scenario.
  
  Please do not give all the links I want some explanation of your minds.
  
  Geetanjali.

  sonidba wrote:
  Hello world
  I have some confusion about rman restore and recover procedures. I read doc available in this regard and google as well. A few more questions unanswered in my mind.
  1. do the restore backup command restore controlfile also alongwith datafiles.
  2 database is running in noarchivelog mode. Suppose one of say users.dbf data files has been removed. control files intact. the same seq # is available since the last log backup. Now to restore the database, I use the following steps.
  1 rman > shutdown immediate
  2.RMAN > startup mount
  3.RMAN > restore database
  4.RMAN > restore database
  5.RMAN > alter database open;

  I'm wrong. This is the one. In this scenario, the steps above can be used.

  If after the last COLD backup is there not get command of newspaper (this means journal seq number is the same), so you can restore your database since the last backup and can retrieve it. And if thi does not need perform full restoration/recovery. At instead step 3 with DATA RESTORE (or RESTORE TABLESPACE USERS) file and step 4 instead with RECOVER DATAFILE (or RECOVER TABLESPACE USERS) and after that you can open the database by using ALTER DATABASE OPEN. If you have lost datafile users.dbf it means that this (tablespace) datafie has been automatically disconnected.

  3. even when logseq is not available when the database is saved, I take the following steps.
  1 rman > startup nomount;
  2 rman > restore controlfile autobackup.
  3.RMAN > change the editing of the database;
  4 rman > restore database;
  5 rman > recover noredo db;
  6 rman > alter database open resetlogs;
  It is a right. can I adopt this procedure in my scenario.

  Yes you are right in this case. There, you have to restore/recovery complete database, because of your database running in NOARCHIVELOG mode. But after database restore (step4) you can just issue RESTORE database and can open with RESETLOGS options also. Also if you have incremental backups can run NOARCHIVELOG mode even RETRIEVE the NOREDO of DATABASE then you can open the database.

• Confusion of RMAN backup

  Hi all

  11.2.0.1

  AIX 6.1

  I'm reviewing the scripts in RMAN backup in our data base of prod that was written by the previous dba.

  The script said:

  run

  {

  overlap archivelog all;

  cross-checking of backup;

  delete expired backup noprompt.

  delete noprompt expired archivelog all;

  delete noprompt obsolete;

  allocate channels ch1 disc type;

  allocate channel ch2 type disk;

  allocate channel ch3 type disk;

  allocate channel ch4 type disk;

  backup in the database format compressed more archivelog backupset ' / rmanbackup/prod/backup/db/db_%U';

  backup current controlfile to Eve format ' / rmanbackup/prod/backup/db/ctrl_stby_%U';

  current backup controlfile as ' / rmanbackup/prod/backup/db/ctrl_%U';

  }

  Then I check the contents of/rmanbackup/prod/backup/db

  Oracle [/ rmanbackup/backup/prod/db] ls-l

  Total 0

  -rw - r - 1 oracle backup 8617984 Sep 18 2012 ctrl_0knlh44v_1_1

  -rw - 1 oracle dba 11698176 Aug 18 01:24 ctrl_2sok4bqk_1_1

  -rw - 1 oracle dba 11698176 Aug 19 01:21 ctrl_3aok7001_1_1

  -rw - 1 oracle dba 11698176 Aug 18 01:24 ctrl_stby_2rok4bqi_1_1

  -rw - 1 oracle dba 11698176 Aug 19 01:21 ctrl_stby_39ok6vvu_1_1

  -rw - 1 oracle dba 8598016 17 Sep 01:24 db_2cok1ne6_1_1

  -rw - 1 oracle dba 3942116864 Aug 18 01:17 db_2hok4acs_1_1

  -rw - 1 oracle dba 3570494976 Aug 18 01:18 db_2iok4acs_1_1

  -rw - 1 oracle dba 130300928 Aug 18 01:16 db_2jok4bap_1_1

  -rw - 1 oracle dba 8078848 Aug 18 01:24 db_2qok4bqh_1_1

  -rw - 1 oracle dba 3205571072 Aug 19 01:14 db_2tok6uot_1_1

  -rw - 1 oracle dba 2845661696 Aug 19 01:14 db_2uok6uot_1_1

  -rw - 1 oracle dba 3153846272 Aug 19 01:14 db_2vok6uot_1_1

  -rw - 1 oracle dba 2851247104 Aug 19 01:14 db_30ok6uot_1_1

  -rw - 1 oracle dba 104608256 Aug 19 01:14 db_31ok6vjb_1_1

  -rw - 1 oracle dba 7869440 Aug 19 01:21 db_38ok6vvt_1_1

  The above backup are complete?

  I also check the flash_recovery_area:

  
  

  Oracle [/ rmanonline/flash_recovery_area/PROD/backupset/2013_09_19] ls-l

  Total 0

  -rw - 1 oracle dba 1867776 Aug 19 01:19 o1_mf_ncnnf_TAG20130919T011455_93mr5j77_.bkp

  -rw - 1 oracle dba 1314160640 Aug 19 01:19 o1_mf_nnndf_TAG20130919T011455_93mqwkc1_.bkp

  -rw - 1 oracle dba 1329709056 Aug 19 01:20 o1_mf_nnndf_TAG20130919T011455_93mqwkfr_.bkp

  -rw - 1 oracle dba 1459748864 Aug 19 01:20 o1_mf_nnndf_TAG20130919T011455_93mqwlhc_.bkp

  -rw - 1 oracle dba 1779367936 Aug 19 01:20 o1_mf_nnndf_TAG20130919T011455_93mqwlvo_.bkp

  -rw - 1 oracle dba 98304 Sep 19 01:19 o1_mf_nnsnf_TAG20130919T011455_93mr5kgk_.bkp

  That is why he is another backup here? Do you have duplicate backups? Please validate.

  Thank you very much, zxy

  Enterprise Manager doesn't have to be DB Console.  It can be Grid Control or control clouds.

  The backup task was scheduled via DBMS_SCHEDULER.

  It could have been programmed by a timer external non-cron.

  Hemant K Collette

• Confusion of RMAN CONTROL_FILE_RECORD_KEEP_TIME

  Hi all
  
  Please clear my doubts
  
  Database version: 10.2.0.3
  
  window of recovery of 30 days on 30 oct
  
  I put the window of recovery for 30 days and all backups of the last 30 days are listed when I log in the recovery catalog. But when I log into target controlfile only 15 days backups are displayed. My CONTROL_FILE_RECORD_KEEP_TIME = 7 which is minimum 7 days.
  
  This means that if I have connection with controlfile then my recovery windows is 15 days and when it is 7 days why controlfile i listing 15 days backups? I need to increase the CONTROL_FILE_RECORD_KEEP_TIME = 30 to synchronize with rman catalog?
  
  In additon obsolete report by cantrolfile list 30 oct to 14 nov obsolete backups
  
  Concerning
  
  Published by: hungry_dba on November 29, 2010 16:31

  >
  I put the window of recovery for 30 days and all backups of the last 30 days are listed when I log in the recovery catalog. But when I log into target controlfile only 15 days backups are displayed. My CONTROL_FILE_RECORD_KEEP_TIME = 7 which is minimum 7 days.

  This means that if I have connection with controlfile then my recovery windows is 15 days and when it is 7 days why controlfile i listing 15 days backups? I need to increase the CONTROL_FILE_RECORD_KEEP_TIME = 30 to synchronize with rman catalog?
  >

  CONTROL_FILE_RECORD_KEEP_TIME specifies the number of days, entries related backup (backups, archivelogs) remain guaranteed, before the old entries are allowed to be crushed. It defaults to 7 (days). Incidentally, you'll get that same old backups are listed as your controlfile was already big enough to keep these entries - there where more recent backups not much needed space in the controlfile.

  If you are backing up a recovery catalog database, the entries in the controlfile are automatically taken in the catalogue (resynced). In other words: If you take backups at least once within 7 days, your controlfile information is taken in the catalog recovery automatically. Otherwise, you should do the following
  (a) manually resynchronize
  (b) make backups more often
  (c) increase accordingly CONTROL_FILE_RECORD_KEEP_TIME

  If you do not use a recovery catalog database, you need to adjust slightly higher than the time is your CONTROL_FILE_RECORD_KEEP_TIME recovery window retention policy.

  Kind regards
  Uwe Hesse

  http://uhesse.WordPress.com

• Understanding of RMAN command file

  Hi, please can someone put me right as I am confused with RMAN concept. (using 11.2, AIX, no catalogue)

  Backup database more newspapers to archive and my DB is saved. I also have autobackup controlfile on. Ive done many restorations of test in this way when the data files are missing or needs to get back to a point in time.

  As a test, I renamed all my files from control and then did a restore. I then restore the control file which I am starting from the automatic backup location. However if there is no autobackup then what? Where can I get my control record of?

  Of the "backup database" command not actually backup control files? I always thought that a backup has been incomplete if the control files were not backup up.

  Please can someone clarify this?

  Thank you very much

  Adam

  However if there is no autobackup then what? Where can I get my control record of?

  That's what I do all my backups: don't configure CONTROLFILE AUTOBACKUP ON, and I always explicitly backup backups of database/archivelogs after controlfile (BACKUP CURRENT CONTROLFILE): in this way, I always know what controlfile to restore.

  DATABASE BACKUP command includes the backup controlfile anyway, but I prefer my name so that I can immediately identify the backup controlfile.

• purge the Flashback logs

  Hello
  
  I put 20 m db_recovery_file_dest_size and flashback target retention for 60mins.
  
  AFAIK flashback logs are automatically removed when the fra is filled.
  I noticed that there are 4 flashback logs and they are never deleted in the last two days.
  What is the reason for this?
  
  Log_1.287.760141739
  Log_2.281.759973635
  Log_2.285.760141745
  log_3.298.760145161

  I have to try.

  Generally, I use 'delete noprompt obsolete' when my Archivelogs are confused and RMAN to even after delete
  a "overlap archivelogs all.

  As the flashback logs are such a small piece of 'PERCENT_SPACE_USED' I have never checked.

  That the Oracle doc said:

  "The flashback logs which are not necessary for a guaranteed restore point are deleted
  automatically to save space for other files in the flash recovery area.

  Best regards

  mseberg

  PS, I have to call one evening as its end here.

• Recreation catalog RMAN, confusion.

  Hi all
  
  Yesterday when I came to office, I found that my rman catalog that is located on a separate server is unable to start, it gave me the error of reading datafile TS_RMAN, unfortunately I did ' t had any kind of backup for this tablespace, I had to drop the tablespace, so what I have is:
  
  1. startup mount
  2 alter database datafile drop < TS_RMAN >
  3. change the database open
  4 drop tablespace including contents
  5. recreate the tablespace with the new data file "choose a new file name.
  
  now when I connect with RMAN after leisure TS_RMAN, I tried to list backupsets and surprisingly he showed me all these backupset were present before TS_RMAN recess.
  
  Confusion: I always thought that all the backup of database information is stored in the RMAN tablespace in the catalog, so if it is true, how is it that was capable of retrieve information even after TS_RMAN recess. If this isn't the case... then where RMAN stores backupset informaiton?
  
  Kind regards

  If you use rman nocatalog connect... You can list backupsets?

  If Yes... Because your control file to store information on the backup...

  How long (days)?

  SQL > show parameter control_file_record_keep_time

  This setting applies only to records in the control that are circularly reusable file (such as the log records to archive and backup documents). It does not apply to records such as datafile, tablespace and redo the annals of thread, which are never reused unless the corresponding object is deleted from the storage space.

  When re register the catalog... that resync information about backup + etc. on database control files to catalog...

• Did not of RMAN within a certain time... little lost and confused.

  I am just getting back in RMAN since it's been a while and I have a TEST Env where I play with her. To configure a catalog against my test DB (node 2 CARS). My flame is 99 GB and all exhausted.
  

  SQL> select  name
    2  ,  floor(space_limit / 1024 / 1024) "Size MB"
    3  ,  ceil(space_used  / 1024 / 1024) "Used MB"
    4  from  v$recovery_file_dest
    5  order by name
    6  /
   
  NAME                             Size MB Used MB
  ------------------------------------ ---------- ----------
  +FLASH                          102390  93547

  When I run a database backup command, it works fine, but when I run a backup of database archiveall command then it fails saying:

  RMAN> backup database plus archivelog;
  
  Starting backup at 23-MAR-10
  current log archived
  using channel ORA_DISK_1
  channel ORA_DISK_1: starting compressed archived log backup set
  channel ORA_DISK_1: specifying archived log(s) in backup set
  input archived log thread=1 sequence=154 RECID=266 STAMP=712495830
  input archived log thread=1 sequence=155 RECID=267 STAMP=712496288
  ...
  ...
  ...
  input archived log thread=1 sequence=202 RECID=335 STAMP=712843190
  input archived log thread=1 sequence=203 RECID=336 STAMP=712844322
  input archived log thread=1 sequence=204 RECID=337 STAMP=712844337
  channel ORA_DISK_1: starting piece 1 at 23-MAR-10
  RMAN-03009: failure of backup command on ORA_DISK_1 channel at 03/23/2010 09:40:29
  ORA-19809: limit exceeded for recovery files
  ORA-19804: cannot reclaim 14205059072 bytes disk space from 107363696640 limit
  continuing other job steps, job failed will not be re-run
  
  --FROM THE ALERT LOG
  ORA-19815: WARNING: db_recovery_file_dest_size of 107363696640 bytes is 100.00% used, and has 0 remaining bytes available.
  ************************************************************************
  You have following choices to free up space from flash recovery area:
  1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
     then consider changing RMAN ARCHIVELOG DELETION POLICY.
  2. Back up files to tertiary device such as tape using RMAN
     BACKUP RECOVERY AREA command.
  3. Add disk space and increase db_recovery_file_dest_size parameter to
     reflect the new space.
  4. Delete unnecessary files using RMAN DELETE command. If an operating
     system command was used to delete files, then use RMAN CROSSCHECK and
     DELETE EXPIRED commands.
  ************************************************************************

  If looking at the output, I see that there are like more than 500 newspaper archive which I assume has never been backed up, and they reside in our + FLASH area on our ASM disks.  But I do not see how these files all consume 99GB.
  
  What else can consume it?
  What are my options to make sure that I can save my db and archives connects and then delete them once they are saved.
  
  My RMAN config is as follows:

  RMAN> show all;
  
  RMAN configuration parameters for database with db_unique_name ETEST are:
  CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 10 DAYS;
  CONFIGURE BACKUP OPTIMIZATION ON;
  CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
  CONFIGURE CONTROLFILE AUTOBACKUP ON;
  CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
  CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 1;
  CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
  CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
  CONFIGURE MAXSETSIZE TO UNLIMITED; # default
  CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
  CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
  CONFIGURE COMPRESSION ALGORITHM 'BZIP2'; # default
  CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
  CONFIGURE SNAPSHOT CONTROLFILE NAME TO 'D:\ORACLE\PRODUCT\11.1.0\DB\DATABASE\SNCFETEST2.ORA'; # default

  Would it be my perhaps of too high retention policy? Should I set it like a day or 2 since it's just a test about

  Create a file for the auxiliary instance pfile before starting.

  See http://download.oracle.com/docs/cd/B28359_01/backup.111/b28270/rcmdupdb.htm#i1006517

  Specify the pfile file DB_CREATE_FILE_DEST.

  Hemant K Collette

• from NLS_DATE_FORMAT to rman

  Hello
  

  Oracle 10.2.0.4 on Linux

  On my Linux box I run rman off shell with the following scripts:

  export NLS_DATE_FORMAT='DD-MON-YYYY HH24:MI:SS' 

  
  

  What Suppose that Works to get all the ' data and present ", but unfortunately get on date; y no time in most of the rman report and list.

  But in case where export NLS_DATE_FORMAT = 'DD-MON-YY HH24:MI:SS' at the OS level I can get the time.

  Please advice according to the scripts mentioned... 

  Which translates

  RMAN > list backup;

  Backup list

  ===============

  S LV TY Device Type delay #Pieces compressed #Copies Tag key

  ------- -- -- - ----------- --------------- ------- ------- ---------- ---

  177. A DISC 29 OCTOBER 15 1 1 no TAG20151029T110406

  178. A DISC 29 OCTOBER 15 1 1 no TAG20151029T110423

  180. A DISC 29 OCTOBER 15 1 1 no TAG20151029T110427

  181. A DRIVE 30 OCTOBER 15 1 1 no TAG20151030T221559

  RMAN > backup from the list of files.

  using the control file of the target instead of recovery catalog database

  Backup of data file list

  ========================

  Key TY LV S cash YVERT have Time compressed #Copies Tag #Pieces file

  ---- ------- -  -- - ---------- --------- ------- ------- ---------- ---

  1 238 F a 77189943 8 NOVEMBER 15 1 1 no TAG20151108T143403

  234 B F a 8 77189355 NOVEMBER 15 1 1 no TAG20151108T141638

  230 B F a 8 77185865 NOVEMBER 15 1 1 no TAG20151108T133004

  226 B F a 8 77185113 NOVEMBER 15 1 1 no TAG20151108T130505

  222 B F a 5 77060848 NOVEMBER 15 1 1 no TAG20151105T160737

  218 B F a 5 77060620 NOVEMBER 15 1 1 no TAG20151105T1603

  will be mentioned the rman.sh (main script) and run.sh (run the main script)

  #rman.sh

  =========

  #! / bin/sh

  a = "START AT RMAN BACKUP:" date'"

  Export NLS_DATE_FORMAT = 'DD-mon-YYYY HH24:MI:SS.

  #export NLS_DATE_FORMAT

  #echo $now

  CD/backup/RMANBACKUP /.

  #mkdir $now

  #cd $now

  #rm f/backup/RMANBACKUP / *.

  /backup/RMANBACKUP/mkdir $ now

  RMAN < < EOF

  connect the target

  run

  {

  overlap backupset;

  overlap archivelog all;

  allocate channel t1 device type disk format ' / backup/RMANBACKUP/$now/y.db_%d_t%t_s%s_p%p';

  Configure controlfile autobackup on;

  # Delete noprompt disc of obsolete device type;

  SQL 'alter system archive log current;

  backup database;

  backup ARCHIVELOG all delete them input format ' / backup/RMANBACKUP/$now/arch_%d_%u_%s';

  current backup controlfile as ' / backup/RMANBACKUP/$now/y.CNTRL_%d_t%t_s%s_p%p';

  output channel t1;

  SQL 'alter system archive log current;

  }

  EXPRESSIONS OF FOLKLORE

  b = "END of the RMAN BACKUP to:" date'"

  ECHO $a

  echo $b

  ============

  #run.sh

  --------

  #! / bin/bash

  now = $(date + "% d_ m_ % Y_ %T"))

  #now = $('date +%d-%m-%Y\ % H: % m: %S"))

  logName = $full_back_ {ORACLE_SID}-$now.log

  export now

  ./RMAN.sh > $logname

  Kind regards

  Dr.Anty wrote:

  But Iam confused little on to your point "If you are not exporting NLS_DATE_FORMAT, you will see the formatted date in whatever the following default value specified NLS_DATE_FORMAT value control.»

  (1) - how can I know the 'ext default value specified NLS_DATE_FORMAT control'?

  Go back and re-read the article.  From the paragraph titled NLS_DATE_FORMAT.  Here, I explain that nls_date_format defined as a database parameter is substituted by the setting on the client OS, which is overridden by connection making an ALTER SESSION, overridden by use of the TO_CHAR TO_DATE, as appropriate.  Of course, those at last are not available within rman.

  (2) - I can understand that the only way to view the backup command list "time" is export NLS_DATE_FORMAT = 'DD-mon-YYYY HH24:MI:SS' at the OS level before the backup of question order list?

  Who starts as a statement, but ends with a question.    Yes, the only way to obtain rman to display the component "hour" in the production of reports (such as the backup from the list) is NLS_DATE_FORMAT value during the session of os command before calling rman.

  3. I put the NLS_DATE_FORMAT = "DD-mon-YYYY HH24:MI:SS" in .bash_profile to see the times 'backup from the list.

  To see the time in your "backup from the list", you must have established NLS_DATE_FORMAT in your session before calling rman. Put in your .bash_profile is a way that accomplish.

  Kind regards

• Configure the RMAN backup in EBS

  Hi all.

  EBS R12.1.3

  DB 11.1.0.7

  RHEL5.3

  I wan to set up registration of archive and backup RMAN with our database of EBS.

  Can you give me the link of best practices on how to configure it to EBS?

  I'm confused with the settings for 11 GR 1 matter vs 11 GR 2. Do their settings the same? as FRA?

  SQL > see the recovery of parameter

  VALUE OF TYPE NAME

  ------------------------------------ ----------- ------------------------------

  db_recovery_file_dest string

  db_recovery_file_dest_size large integer 0

  recovery_parallelism integer 0

  How to set the value of > db_recovery_file_dest in initPROD.ora?

  Is this:

  db_recovery_file_dest = / u01/PROD/FRA

  or

  db_recovery_file_dest = ' / u01/PROD/FRA.

  or

  db_recovery_file_dest = ' LOCATION = / u01/PROD/FRA.

  
  

  I confused

  Thank you very much

  JC

  Hello JC,.

  Please refer below MOS:

  Getting started with Recovery Manager (RMAN) (Doc ID 360416.1)

  Note to master for Oracle Recovery Manager (RMAN) (Doc ID 1116484.1)

  RMAN - Sample backup script (Doc ID 397315.1)

  Coco - M

• RMAN backup Compression algorithms?

  Hi Experts,

  Please help me, I'm a little confused here.

  1. which algorithm of Compression in RMAN needs license of Advanced Compression in the list below?

  • BASIC
  • LOW
  • MEDIUM
  • HIGH

  2. I'm under the impression that you don't need Advanced Compression license if you use BASIC ALGORITHM of COMPRESSION, but I could be wrong please advise.

  Kind regards

  ZKM

  Basic compression is not license required...

  http://docs.Oracle.com/database/121/BRADV/rcmconfa.htm#CHDEHCEB

  Supported Compression levels

  Oracle database provides two types of compression algorithms: a default compression algorithm and a group of algorithms of compression available with Oracle Advanced Compression option. The default algorithm is a standard Oracle database feature, while Oracle Advanced Compression option is sold separately.

  Default compression

  You can configure the default compression algorithm, which does not require Oracle Advanced Compression option.

• Duplicate RMAN cloning using the database using the current database

  Hi all

  I am new bie, I want to clone my target database using the rman command 'DUPLICATE database OF ACTIVE DATABASE"new host.

  steps on google, I searched, but I got confused, I doubt if you need to install oracle rdbms softare on new host or not? and also should I copy all files (redo, control, datafiles) to the new host? kind LY help and tell me the steps to clone the database using rman.your help will be appreciated.

  Thank you.

  Kind regards.

  OS: RHEL 5.4

  DB: 11.2.0.3

  Hello

  Have you not through document link to Gavin at least. It's very simple steps. If you wait until other measures, then won't them.

  He had provided the demonstration, at least get in 'google' (you'll have so many links)

  The Oracle Dba Italian Blogger: how to clone an Oracle 11 g 2 home

  http://balaoracledba.com/2013/12/16/cloning-an-existing-Oracle11g-release-2-RDBMS-installation/

  Note: If you feel always complex, better skip the task itself.

  -Thank you

  Pavan Kumar N

• Parallelism with RMAN multiplexing

  Hi all

  On top of topics, this means,

  Equivalence of parallelism to allocate no.. wire to allocated channel whereas maxfilesopen means no. reading by time of input file and fileperset means no. writing by time of tapes/discs.

  May I know what are the relationships between the parallelism and maxfilesopen + filepreset.

  Do mean allocate no.. of threads allocated for read write the process in general?

  
  

  Thank you

  StarterAman

  Speaking of RMAN it is confusing to use the term parallelism and threads.

  On the contrary, the correct terms are:

  channel is a pipe to a physical output device. If you have several physical output devices, so you can have several channels simultaneously running. Each channel is associated with a session.

  maxfilesopen (IE multiplex) corresponds to the maximum number of simultaneous files that can be read simultaneously for a channel. No matter how many files by channel multiplexing - there is still only 1 session / channel. By default the multiplex = 8 files per channel.

  filesperset is simply the maximum number of files that can be written in a backupset. Unsaved files are written in an another backupset. Default = 64 files per set.

• Report unrecoverable rman

  Hello

  I just ran the report unrecoverable on rman (unrecoverable database report) and discovered that there are unrecoverable data files.

  As has been suggested by some forums on the internet, I made a query involving: v$ segment_statistics ss and by limiting to statistic_name = 'direct written physical' and using the unrecoverable_change # on v$ datafile.

  The items returned by the query are essentially business segments, BUT the table space, the table and the lob segment have RECORD = 'YES '. This is where I started to get confused...

  So is my question, possible to say that the objects are loaded for the unrecoverable data file? And if so, except by checking the attributes of the RECORD, that I have to take care of other things (I can exclude the column from the table and lob have been changed on this day/today ' hui)?

  Thank you for your help.

  Best

  Martin

  So, do you have a reported fatal list everyday, even after fresh backups?

  This would mean that these operations are performed every day.

  One option is to set the FORCE_LOGGING at the database level.

  Hemant K Collette

• Restore the RMAN backup on another server

  Hello

  ENV: Oracle 10 g 2 64 bit, RHEL 5.8 64 bit on ASM, Database size = ~ 1.3 to

  Backup RMAN of PROD will FRA and then backed up to tape. I have limited access to the PROD because it is maintained by 3rd party.

  My client is planning to move this database on their own datacenter (from the 3rd party data center). For test purposes, I asked DBA of 3rd party to provide us with an export of drawings required data pump. Export takes about 8 hours, and the import takes the same time to the new location. To copy the files exported to new locations takes another few hours (over the network). The total size of the dump file is around 500 GB. Thus, a whole cycle of Export-Import-copy takes about ~ 20 + Hrs.

  I want to try another option to reduce the time required for the updating of the database of PROD and which is "use RMAN backup of PROD ' and restore it on the data center server. RMAN full backup takes ~ 4hrs PROD and the restoration should be at the same time (new server has better and faster HW, storage with a SSD). I found this thread very useful on the Oracle Forms on this topic:

  Restore backup RMAN on another server

  This thread contains very good example for a restoration of database on the file system.

  I have a bit of confusion because my database uses ASM. The default location of the backups in PROD is FRA (on ASM == > db_recovery_file_dest = + FRA ). If I understand correctly, the RMAN backup must be in the same place where he was on the PROD Server - i.e. the diskgroup FRA.

  If I get a copy of the part 3 RMAN backup, how would I copy on FRA?

  OR can / should I just change the init parameter "db_recovery_file_dest" on the new server to point to the file system directory where the backup (say "/ ora_backup") and RMAN will pick up and restore the database?

  Please advise!

  Best regards

  You can restore the backup files to any location, then you must configure the channel using the "CONFIGURE CHANNEL device type disk format 'new location ';

  This thread will help

  Restore from a different location from the original location of RMAN backup