RMAN retention policy

Hi,
on 10g R2 on AIX6.1 , I have the followings :
RMAN> show all;
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 14 DAYS;My backup script :
RMAN> run
      allocate channel t1 type disk;
      backup as compressed backupset format '$dir/df_%d_%T_%s_%p' database;
      sql 'alter system switch logfile';
      backup as compressed backupset format '$dir/al_%d_%T_%s_%p' archivelog all delete input;
      backup as compressed backupset format '$dir/ctl_%d_%T_%s_%p' current controlfile;
crosscheck backup;
delete noprompt obsolete;
delete noprompt expired backup of database;But I have the backup files of 3th of March yet :
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/appli/oracle/BACKUP/RMAN/FULL/MYDB/df_MYDB_20110303_179_1 recid=171 stamp=744800219And the only file it deletes is :
RMAN retention policy will be applied to the command
RMAN retention policy is set to recovery window of 14 days
using channel ORA_DISK_1
Deleting the following obsolete backups and copies:
Type                 Key    Completion Time    Filename/Handle
Backup Set           13404  18-MAR-11
  Backup Piece       13408  18-MAR-11          /appli/oracle/BACKUP/RMAN/INCR/MYDB/ctl_MYDB_20110318_339_1
deleted backup piece
backup piece handle=/appli/oracle/BACKUP/RMAN/INCR/MYDB/ctl_MYDB_20110318_339_1 recid=331 stamp=746072971
Deleted 1 objectsShould not RMAN delete the backup files of before 15 of March ? Why it does not ?
Thank for explanation ? Or more.

Thank to all.
We backup it every night (FULL at WE and incremental in week).
list backup of database;
List of Backup Sets
===================
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
7145    Full    571.86M    DISK        00:01:55     03-MAR-11
        BP Key: 7151   Status: AVAILABLE  Compressed: YES  Tag: TAG20110303T085658
        Piece Name: /appli/oracle/BACKUP/RMAN/FULL/MYDB/df_MYDB_20110303_179_1
  List of Datafiles in backup set 7145
  File LV Type Ckp SCN    Ckp Time  Name
  1       Full 75445711   03-MAR-11 /data01/bases/MYDB/system01.dbf
  2       Full 75445711   03-MAR-11 /data01/bases/MYDB/psundots01.dbf
  4       Full 75445711   03-MAR-11 /data01/bases/MYDB/psdefault.dbf
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
19112   Full    772.42M    DISK        00:03:05     01-APR-11
        BP Key: 19118   Status: AVAILABLE  Compressed: YES  Tag: TAG20110401T121403
        Piece Name: /appli/oracle/BACKUP/RMAN/FULL/MYDB/df_MYDB_20110401_60_1
  List of Datafiles in backup set 19112
  File LV Type Ckp SCN    Ckp Time  Name
  8       Full 152751106  01-APR-11 /data01/bases/MYDB/ptprc.dbf
  10      Full 152751106  01-APR-11 /index01/bases/MYDB/pttbl.dbf
  15      Full 152751106  01-APR-11 /data01/bases/MYDB/pttlrg.dbf
  19      Full 152751106  01-APR-11 /data01/bases/MYDB/ptprjwk.dbf
  20      Full 152751106  01-APR-11 /data01/bases/MYDB/ptaudit.dbf
  24      Full 152751106  01-APR-11 /data01/bases/MYDB/amlarge.dbf
  26      Full 152751106  01-APR-11 /data01/bases/MYDB/apapp.dbf
  27      Full 152751106  01-APR-11 /data01/bases/MYDB/aparch.dbf
  34      Full 152751106  01-APR-11 /data01/bases/MYDB/aucapp.dbf
  35      Full 152751106  01-APR-11 /data01/bases/MYDB/auclrge.dbf
  37      Full 152751106  01-APR-11 /data01/bases/MYDB/bdapp.dbf
  38      Full 152751106  01-APR-11 /data01/bases/MYDB/bdlarge.dbf
  40      Full 152751106  01-APR-11 /data01/bases/MYDB/bilarge.dbf
  42      Full 152751106  01-APR-11 /data01/bases/MYDB/caapp.dbf
  50      Full 152751106  01-APR-11 /data01/bases/MYDB/cuaudit.dbf
  54      Full 152751106  01-APR-11 /data01/bases/MYDB/cularge.dbf
  58      Full 152751106  01-APR-11 /data01/bases/MYDB/dpwork.dbf
  60      Full 152751106  01-APR-11 /data01/bases/MYDB/eobfapp.dbf
  64      Full 152751106  01-APR-11 /data01/bases/MYDB/eocmwrk.dbf
  71      Full 152751106  01-APR-11 /data01/bases/MYDB/eoecwrk.dbf
  74      Full 152751106  01-APR-11 /data01/bases/MYDB/eoepapp.dbf
  75      Full 152751106  01-APR-11 /data01/bases/MYDB/eoeplrg.dbf
  77      Full 152751106  01-APR-11 /data01/bases/MYDB/eoewapp.dbf
  81      Full 152751106  01-APR-11 /data01/bases/MYDB/eoiulrg.dbf
  84      Full 152751106  01-APR-11 /data01/bases/MYDB/eoltapp.dbf
  85      Full 152751106  01-APR-11 /data01/bases/MYDB/eoppapp.dbf
  88      Full 152751106  01-APR-11 /data01/bases/MYDB/eotplrg.dbf
  93      Full 152751106  01-APR-11 /data01/bases/MYDB/faapp.dbf
  95      Full 152751106  01-APR-11 /data01/bases/MYDB/fawork.dbf
  101     Full 152751106  01-APR-11 /data01/bases/MYDB/fgwork.dbf
  107     Full 152751106  01-APR-11 /data01/bases/MYDB/fowork.dbf
  109     Full 152751106  01-APR-11 /data01/bases/MYDB/fsapp1.dbf
  112     Full 152751106  01-APR-11 /data01/bases/MYDB/glapp.dbf
  122     Full 152751106  01-APR-11 /data01/bases/MYDB/inlarge.dbf

Similar Messages

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    Thanks for reply.
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  • Appropriate RMAN Retention Policy

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    ===========================================
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    ===========================================
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  • RMAN Retention policy 5 days but v$backup_set shows unexpected return

    ORACLE 10.2
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    Message was edited by: removed para due to believe it was incorrect statement
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    1 640712259 640712258 2 D NO 1 07-DEC-07 07-DEC-07 1 8192 NO NO
    2 640712260 640712259 3 D YES 1 07-DEC-07 07-DEC-07 1 16384 NO NO
    3 640712625 640712625 4 D NO 1 07-DEC-07 07-DEC-07 0 8192 NO NO
    4 640712626 640712626 5 D YES 1 07-DEC-07 07-DEC-07 0 16384 NO NO
    5 640712648 640712648 6 D NO 1 07-DEC-07 07-DEC-07 0 8192 NO NO
    6 640712649 640712649 7 D YES 1 07-DEC-07 07-DEC-07 0 16384 NO NO
    7 640713224 640713223 8 D NO 1 07-DEC-07 07-DEC-07 1 8192 NO NO
    8 640713225 640713225 9 D YES 1 07-DEC-07 07-DEC-07 0 16384 NO NO
    9 640713657 640713282 10 D NO 1 07-DEC-07 07-DEC-07 375 8192 NO NO
    10 640713668 640713667 11 D YES 1 07-DEC-07 07-DEC-07 1 16384 NO NO
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    Regards
    Neil
    Message was edited by:
    Neil Hunter
    Message was edited by:
    Neil Hunter

  • RMAN RETENTION POLICY FOR ORACLE8I

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  • RMAN retention policy really long

    Hi,
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    I Nikolay,
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    Nunzio Cafarelli wrote:
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    Regards
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  • RMAN backups does not match its retention policy

    Hello,
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    I have clear retention policy and set to 14 days again but does not seem to work.
    I would appreciate suggestion(s) regarding the strange issue.
    Thanks a lot.
    Best Regards

    John-MK wrote:
    Hello,
    I have couple of PROD instances on Windows environment with 11.2.0.3 DB version. RMAN retention policy is set to 14 days but I have noticed that backup is showing longer than that.
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    I have clear retention policy and set to 14 days again but does not seem to work.
    I would appreciate suggestion(s) regarding the strange issue.
    Thanks a lot.
    Best Regards
    We would need to know what kind of backups and when they were taken.  Consider this scenario:
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    Incremental level 0 backup taken on Sundays
    Incremental level 1 backups taken Mon through Sat.
    Let's say Oct 1 is a Sunday, so we take an inc-0 backup on Oct 1, and again on Oct 8.
    Now let's say we are at Oct 10.  Our 7 day retention policy dicatates that we be able to recover to any day back to Oct 3.
    The only way we can recover to Oct 3 is to begin with that inc-0 backup from Oct 1.
    All recovery begins with the last inc-0 backup prior to the point in time to be recovered.  In a normal, regularly cycling schedule of backups,  you will actually end up with backups 1 day short of being twice as old as your retention period.
    Let's take a more extreme example.  Same 7-day retention period, but after a single inc-0 backup, you don't take any more backups for 3 months.  That one single backup is still needed to enforce your recovery window, and so is not obsolete, despite the fact it is 3 months old and your recovery window is only 7 days.
    Also, you mention 'expired'.  In terms of oracle backups, 'expired' is not the same as 'obsolete'.
    "Obsolete" means 'no longer needed to enforce recovery policy'.
    "Expired" is a bit more complex.
    when a backup is taken, or an archivelog is written, a record of that is written to the repository.  when you do an rman 'crosscheck', those repository records are compared to reality -- to see if the recorded backup file or archivelog file actually exists.  Maybe someone used an OS command to delete them.  Any file found to have 'gone walkabout' have their repository records marked as 'expired'.  An rman 'delete expired' then removes those records from the repository.

  • Can i use the retention policy without using the Flash Recovery area?

    Yes ,lets see here
    RMAN>list backup summary
    C:\>dir *.bus
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\
    File Not Found
    C:\>dir *.arc
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\
    File Not Found
    RMAN> crosscheck backup
    2> ;
    using channel ORA_DISK_1
    RMAN> list backup summary
    2> ;
    RMAN> show retention policy
    2> ;
    RMAN configuration parameters are:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
    RMAN> run {
    2>   allocate channel ch0 type disk;
    3>   backup as compressed backupset database format
    4>   'c:\rman_%s_%d_%T.bus'
    5>   plus archivelog format 'c:\arch_%s_%d_%T.arc';
    6>   release channel ch0;
    7>   allocate channel ch1 device type disk format 'c:\arch_%s_%d_%T.arc';
    8>   release channel ch1;
    9>   delete force noprompt obsolete;
    10>   allocate channel ch2 device type disk format 'c:\rman_%s_%d_%T.bus';
    11>   release channel ch2;
    12>   delete force noprompt obsolete;
    13> }
    released channel: ORA_DISK_1
    allocated channel: ch0
    channel ch0: sid=146 devtype=DISK
    Starting backup at 15-APR-08
    current log archived
    channel ch0: starting compressed archive log backupset
    channel ch0: specifying archive log(s) in backup set
    input archive log thread=1 sequence=24 recid=79 stamp=652108461
    input archive log thread=1 sequence=25 recid=80 stamp=652112650
    channel ch0: starting piece 1 at 15-APR-08
    channel ch0: finished piece 1 at 15-APR-08
    piece handle=C:\ARCH_130_ORCL1_20080415.ARC comment=NONE
    channel ch0: backup set complete, elapsed time: 00:00:05
    Finished backup at 15-APR-08
    Starting backup at 15-APR-08
    channel ch0: starting compressed full datafile backupset
    channel ch0: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\SYSTEM01.DB
    F
    input datafile fno=00003 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\SYSAUX01.DB
    F
    input datafile fno=00004 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\USERS01.DBF
    input datafile fno=00002 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\UNDOTBS01.D
    BF
    channel ch0: starting piece 1 at 15-APR-08
    channel ch0: finished piece 1 at 15-APR-08
    piece handle=C:\RMAN_131_ORCL1_20080415.BUS comment=NONE
    channel ch0: backup set complete, elapsed time: 00:00:45
    Finished backup at 15-APR-08
    Starting backup at 15-APR-08
    current log archived
    channel ch0: starting compressed archive log backupset
    channel ch0: specifying archive log(s) in backup set
    input archive log thread=1 sequence=26 recid=81 stamp=652112703
    channel ch0: starting piece 1 at 15-APR-08
    channel ch0: finished piece 1 at 15-APR-08
    piece handle=C:\ARCH_132_ORCL1_20080415.ARC comment=NONE
    channel ch0: backup set complete, elapsed time: 00:00:02
    Finished backup at 15-APR-08
    Starting Control File and SPFILE Autobackup at 15-APR-08
    piece handle=C:\ORACLE\PRODUCT\10.1.0\FLASH_RECOVERY_AREA\ORCL1\AUTOBACKUP\2008_
    04_15\O1_MF_S_652112718_408X3ZVJ_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 15-APR-08
    released channel: ch0
    allocated channel: ch1
    channel ch1: sid=146 devtype=DISK
    released channel: ch1
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 1
    allocated channel: ORA_DISK_1
    channel ORA_DISK_1: sid=146 devtype=DISK
    Deleting the following obsolete backups and copies:
    Type                 Key    Completion Time    Filename/Handle
    Backup Set           128    15-APR-08
      Backup Piece       128    15-APR-08          C:\ARCH_130_ORCL1_20080415.ARC
    Archive Log          79     15-APR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL1\ARCHIVELOG\2008_04_15\O1_MF_1_24_408RYXDF_.ARC
    Archive Log          80     15-APR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL1\ARCHIVELOG\2008_04_15\O1_MF_1_25_408X1SCR_.ARC
    deleted backup piece
    backup piece handle=C:\ARCH_130_ORCL1_20080415.ARC recid=128 stamp=652112652
    deleted archive log
    archive log filename=C:\ORACLE\PRODUCT\10.1.0\FLASH_RECOVERY_AREA\ORCL1\ARCHIVEL
    OG\2008_04_15\O1_MF_1_24_408RYXDF_.ARC recid=79 stamp=652108461
    deleted archive log
    archive log filename=C:\ORACLE\PRODUCT\10.1.0\FLASH_RECOVERY_AREA\ORCL1\ARCHIVEL
    OG\2008_04_15\O1_MF_1_25_408X1SCR_.ARC recid=80 stamp=652112650
    Deleted 3 objects
    released channel: ORA_DISK_1
    allocated channel: ch2
    channel ch2: sid=146 devtype=DISK
    released channel: ch2
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 1
    allocated channel: ORA_DISK_1
    channel ORA_DISK_1: sid=146 devtype=DISK
    no obsolete backups found
    RMAN>
    C:\>dir *.bus
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\
    04/15/2008  02:24 PM        96,813,056 RMAN_131_ORCL1_20080415.BUS
                   1 File(s)     96,813,056 bytes
                   0 Dir(s)  61,960,724,480 bytes free
    C:\>dir *.arc
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\
    04/15/2008  02:25 PM            56,832 ARCH_132_ORCL1_20080415.ARC
                   1 File(s)         56,832 bytes
                   0 Dir(s)  61,960,724,480 bytes free
    C:\>
    RMAN> run {
    2>   allocate channel ch0 type disk;
    3>   backup as compressed backupset database format
    4>   'c:\rman_%s_%d_%T.bus'
    5>   plus archivelog format 'c:\arch_%s_%d_%T.arc';
    6>   release channel ch0;
    7>  }
    released channel: ORA_DISK_1
    allocated channel: ch0
    channel ch0: sid=146 devtype=DISK
    Starting backup at 15-APR-08
    current log archived
    channel ch0: starting compressed archive log backupset
    channel ch0: specifying archive log(s) in backup set
    input archive log thread=1 sequence=26 recid=81 stamp=652112703
    input archive log thread=1 sequence=27 recid=82 stamp=652112873
    channel ch0: starting piece 1 at 15-APR-08
    channel ch0: finished piece 1 at 15-APR-08
    piece handle=C:\ARCH_134_ORCL1_20080415.ARC comment=NONE
    channel ch0: backup set complete, elapsed time: 00:00:02
    Finished backup at 15-APR-08
    Starting backup at 15-APR-08
    channel ch0: starting compressed full datafile backupset
    channel ch0: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\SYSTEM01.DB
    F
    input datafile fno=00003 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\SYSAUX01.DB
    F
    input datafile fno=00004 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\USERS01.DBF
    input datafile fno=00002 name=C:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL1\UNDOTBS01.D
    BF
    channel ch0: starting piece 1 at 15-APR-08
    channel ch0: finished piece 1 at 15-APR-08
    piece handle=C:\RMAN_135_ORCL1_20080415.BUS comment=NONE
    channel ch0: backup set complete, elapsed time: 00:00:45
    Finished backup at 15-APR-08
    Starting backup at 15-APR-08
    current log archived
    channel ch0: starting compressed archive log backupset
    channel ch0: specifying archive log(s) in backup set
    input archive log thread=1 sequence=28 recid=83 stamp=652112925
    channel ch0: starting piece 1 at 15-APR-08
    channel ch0: finished piece 1 at 15-APR-08
    piece handle=C:\ARCH_136_ORCL1_20080415.ARC comment=NONE
    channel ch0: backup set complete, elapsed time: 00:00:02
    Finished backup at 15-APR-08
    Starting Control File and SPFILE Autobackup at 15-APR-08
    piece handle=C:\ORACLE\PRODUCT\10.1.0\FLASH_RECOVERY_AREA\ORCL1\AUTOBACKUP\2008_
    04_15\O1_MF_S_652112928_408XBKCZ_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 15-APR-08
    released channel: ch0
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 1
    Report of obsolete backups and copies
    Type                 Key    Completion Time    Filename/Handle
    Backup Set           129    15-APR-08
      Backup Piece       129    15-APR-08          C:\RMAN_131_ORCL1_20080415.BUS
    Backup Set           130    15-APR-08
      Backup Piece       130    15-APR-08          C:\ARCH_132_ORCL1_20080415.ARC
    Backup Set           131    15-APR-08
      Backup Piece       131    15-APR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL1\AUTOBACKUP\2008_04_15\O1_MF_S_652112718_408X3ZVJ_.BKP
    Backup Set           132    15-APR-08
      Backup Piece       132    15-APR-08          C:\ARCH_134_ORCL1_20080415.ARC
    Archive Log          81     15-APR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL1\ARCHIVELOG\2008_04_15\O1_MF_1_26_408X3HRP_.ARC
    Archive Log          82     15-APR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL1\ARCHIVELOG\2008_04_15\O1_MF_1_27_408X8RXN_.ARC
    RMAN>Note: i have archivelog which is at FRA ,it also apply there and as well yours own defined backupsets path.
    Yours comments are wellcome.
    http://oraware.blogspot.com/2008/04/can-i-use-retention-policy-without.htmlKhurram

    Hmmm, I can't see where the confusion originates. The table near the bottom of www.apple.com/timecapsule/specs.html has one row labelled "For backup using Time Machine" and another row labelled "For AirPort Disk with a USB hard drive".
    The requirement for backup via Time Machine is OS 10.5.1 or better. Time Machine is not supported in pre-Leopard (OS 10.5) nor in Windows.
    The requirement for using Time Capsule as a remote disk is identified as "Mac with Mac OS X v10.4.8 or later" or "PC with Windows XP (SP2) or Windows Vista; Bonjour for Windows (included on Time Capsule CD)".
    Doesn't that pretty much spell out that Time Capsule works as a network drive without the need for Time Machine?
    Also Joe (the OP) never indicated any desire to use it with Windows so I'm not sure why all the discussion about Windows compatibility. ??
    Also the quote posted by Henry seems pretty clear:
    "Time Capsule with Time Machine in Leopard is the ideal backup solution. But that doesn’t mean Tiger, Windows XP, and Windows Vista users can’t enjoy the benefits of Time Capsule, too. Because it mounts as a wireless hard drive, Tiger and Windows users simply access Time Capsule directly from the wireless network for exchanging and storing files quickly and easily."

  • Control_file_record_keep_time vs retention policy

    Its not thread nor question just read from documents and tried to imply the fact of documents and i think its written correct what i tried to do proof it practically ,neither i am trying to be smart just share with you guys is my observation correct or not.i am using FRA area for backup.
    <quote>
    Relation between RMAN retention period and control_file_record_keep_time
    RMAN backup keeps the backup metadata information in the reusable section of the controlfile.Its depends on the parameter CONTROL_FILE_RECORD_KEEP_TIME. CONTROL_FILE_RECORD_KEEP_TIME specifies the minimum number of days before a reusable record in the control file can be reused.
    In the event a new record needs to be added to a reusable section and there is not enough space then it will delete the oldest record, which are aged enough.
    Backup retention policy is the rule to set regarding which backups must be retained (whether on disk or other backup media) to meet the recovery and other requirements.
    If the CONTROL_FILE_RECORD_KEEP_TIME is less than the retention policy then it may overwrite reusable records prior to obsoleting them in the RMAN metadata. Therfor it is recommended that the CONTROL_FILE_RECORD_KEEP_TIME should set to a higher value than the retention policy.
    Formula
    CONTROL_FILE_RECORD_KEEP_TIME = retention period + level 0 backup interval + 1
    For e.g.
    e.q. level 0 backup once a week with retention policy of a recovery windows of 14 days then in this
    case the CONTROL_FILE_RECORD_KEEP_TIME should be 14+7+1=22
    <quote>
    RMAN> show retention policy
    2> ;
    RMAN configuration parameters are:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
    SQL> show parameter control_file_record_keep_time
    NAME                                 TYPE        VALUE
    control_file_record_keep_time        integer     7
    SQL>
    SQL> alter system set control_file_record_keep_time=1
      2  /
    System altered.
    SQL> show parameter control_file_record_keep_time
    NAME                                 TYPE        VALUE
    control_file_record_keep_time        integer     1
    RMAN> configure retention policy to redundancy  3
    2> ;
    new RMAN configuration parameters:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
    new RMAN configuration parameters are successfully stored
    RMAN> show retention policy
    2> ;
    RMAN configuration parameters are:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
    RMAN> backup database
    2> ;
    Starting backup at 20-NOV-07
    allocated channel: ORA_DISK_1
    channel ORA_DISK_1: sid=126 devtype=DISK
    channel ORA_DISK_1: starting full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01.DBF
    input datafile fno=00003 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01.DBF
    input datafile fno=00002 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS01.DBF
    input datafile fno=00004 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.DBF
    channel ORA_DISK_1: starting piece 1 at 20-NOV-07
    channel ORA_DISK_1: finished piece 1 at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O1_MF_NN
    NDF_TAG20071120T185951_3N5T2RTX_.BKP comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:01:17
    Finished backup at 20-NOV-07
    Starting Control File and SPFILE Autobackup at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\O1_MF_S
    _639169270_3N5T598C_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 20-NOV-07
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 3
    no obsolete backups found
    RMAN> backup database
    2> ;
    Starting backup at 20-NOV-07
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01.DBF
    input datafile fno=00003 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01.DBF
    input datafile fno=00002 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS01.DBF
    input datafile fno=00004 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.DBF
    channel ORA_DISK_1: starting piece 1 at 20-NOV-07
    channel ORA_DISK_1: finished piece 1 at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O1_MF_NN
    NDF_TAG20071120T190313_3N5T94SG_.BKP comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:01:22
    Finished backup at 20-NOV-07
    Starting Control File and SPFILE Autobackup at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\O1_MF_S
    _639169477_3N5TCPVW_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 20-NOV-07
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 3
    no obsolete backups found
    RMAN> backup database
    2> ;
    Starting backup at 20-NOV-07
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01.DBF
    input datafile fno=00003 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01.DBF
    input datafile fno=00002 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS01.DBF
    input datafile fno=00004 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.DBF
    channel ORA_DISK_1: starting piece 1 at 20-NOV-07
    channel ORA_DISK_1: finished piece 1 at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O1_MF_NN
    NDF_TAG20071120T190500_3N5TDGC9_.BKP comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:00:55
    Finished backup at 20-NOV-07
    Starting Control File and SPFILE Autobackup at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\O1_MF_S
    _639169556_3N5TG65X_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 20-NOV-07
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 3
    Report of obsolete backups and copies
    Type                 Key    Completion Time    Filename/Handle
    Archive Log          30     19-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_19\O1_MF_1_1_3N35QQX7_.ARC
    Archive Log          31     19-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_19\O1_MF_1_2_3N39LR86_.ARC
    Archive Log          32     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_3_3N4RZBXV_.ARC
    Archive Log          33     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_4_3N4W8SLF_.ARC
    Archive Log          34     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_5_3N4Y1CN7_.ARC
    Archive Log          35     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_6_3N4Z6LGF_.ARC
    Archive Log          36     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_7_3N53S4XK_.ARC
    Archive Log          37     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_8_3N57XHYB_.ARC
    Archive Log          38     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_9_3N5C52D8_.ARC
    Archive Log          39     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_10_3N5C83YB_.ARC
    Archive Log          40     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_11_3N5K9J2Z_.ARC
    Archive Log          41     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_12_3N5MMXHO_.ARC
    Archive Log          42     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_13_3N5N566W_.ARC
    Archive Log          43     20-NOV-07          C:\ORACLE\FLASH_RECOVERY_AREA\ORC
    \ORC\ARCHIVELOG\2007_11_20\O1_MF_1_14_3N5RVB4G_.ARC
    RMAN>
    Now i just delete alls backup and increase the control_file_record_keep_time 7 which will be more then retention policy redundancy 3
    RMAN> list backup
    2> ;
    List of Backup Sets
    ===================
    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
    6       Full    512M       DISK        00:01:10     20-NOV-07
            BP Key: 6   Status: AVAILABLE  Compressed: NO  Tag: TAG20071120T185951
            Piece Name: C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O
    1_MF_NNNDF_TAG20071120T185951_3N5T2RTX_.BKP
      List of Datafiles in backup set 6
      File LV Type Ckp SCN    Ckp Time  Name
      1       Full 478504     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01
    .DBF
      2       Full 478504     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS0
    1.DBF
      3       Full 478504     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01
    .DBF
      4       Full 478504     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.
    DBF
    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
    7       Full    2M         DISK        00:00:04     20-NOV-07
            BP Key: 7   Status: AVAILABLE  Compressed: NO  Tag: TAG20071120T190110
            Piece Name: C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\
    O1_MF_S_639169270_3N5T598C_.BKP
      Controlfile Included: Ckp SCN: 478975       Ckp time: 20-NOV-07
      SPFILE Included: Modification time: 20-NOV-07
    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
    8       Full    513M       DISK        00:01:15     20-NOV-07
            BP Key: 8   Status: AVAILABLE  Compressed: NO  Tag: TAG20071120T190313
            Piece Name: C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O
    1_MF_NNNDF_TAG20071120T190313_3N5T94SG_.BKP
      List of Datafiles in backup set 8
      File LV Type Ckp SCN    Ckp Time  Name
      1       Full 480265     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01
    .DBF
      2       Full 480265     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS0
    1.DBF
      3       Full 480265     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01
    .DBF
      4       Full 480265     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.
    DBF
    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
    9       Full    2M         DISK        00:00:02     20-NOV-07
            BP Key: 9   Status: AVAILABLE  Compressed: NO  Tag: TAG20071120T190437
            Piece Name: C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\
    O1_MF_S_639169477_3N5TCPVW_.BKP
      Controlfile Included: Ckp SCN: 480346       Ckp time: 20-NOV-07
      SPFILE Included: Modification time: 20-NOV-07
    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
    10      Full    513M       DISK        00:00:52     20-NOV-07
            BP Key: 10   Status: AVAILABLE  Compressed: NO  Tag: TAG20071120T190500
            Piece Name: C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O
    1_MF_NNNDF_TAG20071120T190500_3N5TDGC9_.BKP
      List of Datafiles in backup set 10
      File LV Type Ckp SCN    Ckp Time  Name
      1       Full 480415     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01
    .DBF
      2       Full 480415     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS0
    1.DBF
      3       Full 480415     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01
    .DBF
      4       Full 480415     20-NOV-07 C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.
    DBF
    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
    11      Full    2M         DISK        00:00:02     20-NOV-07
            BP Key: 11   Status: AVAILABLE  Compressed: NO  Tag: TAG20071120T190556
            Piece Name: C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\
    O1_MF_S_639169556_3N5TG65X_.BKP
      Controlfile Included: Ckp SCN: 480449       Ckp time: 20-NOV-07
      SPFILE Included: Modification time: 20-NOV-07
    RMAN> delete backup
    2> ;
    using channel ORA_DISK_1
    List of Backup Pieces
    BP Key  BS Key  Pc# Cp# Status      Device Type Piece Name
    6       6       1   1   AVAILABLE   DISK        C:\ORACLE\FLASH_RECOVERY_AREA\OR
    C\ORC\BACKUPSET\2007_11_20\O1_MF_NNNDF_TAG20071120T185951_3N5T2RTX_.BKP
    7       7       1   1   AVAILABLE   DISK        C:\ORACLE\FLASH_RECOVERY_AREA\OR
    C\ORC\AUTOBACKUP\2007_11_20\O1_MF_S_639169270_3N5T598C_.BKP
    8       8       1   1   AVAILABLE   DISK        C:\ORACLE\FLASH_RECOVERY_AREA\OR
    C\ORC\BACKUPSET\2007_11_20\O1_MF_NNNDF_TAG20071120T190313_3N5T94SG_.BKP
    9       9       1   1   AVAILABLE   DISK        C:\ORACLE\FLASH_RECOVERY_AREA\OR
    C\ORC\AUTOBACKUP\2007_11_20\O1_MF_S_639169477_3N5TCPVW_.BKP
    10      10      1   1   AVAILABLE   DISK        C:\ORACLE\FLASH_RECOVERY_AREA\OR
    C\ORC\BACKUPSET\2007_11_20\O1_MF_NNNDF_TAG20071120T190500_3N5TDGC9_.BKP
    11      11      1   1   AVAILABLE   DISK        C:\ORACLE\FLASH_RECOVERY_AREA\OR
    C\ORC\AUTOBACKUP\2007_11_20\O1_MF_S_639169556_3N5TG65X_.BKP
    Do you really want to delete the above objects (enter YES or NO)? yes
    deleted backup piece
    backup piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O
    1_MF_NNNDF_TAG20071120T185951_3N5T2RTX_.BKP recid=6 stamp=639169192
    deleted backup piece
    backup piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\
    O1_MF_S_639169270_3N5T598C_.BKP recid=7 stamp=639169273
    deleted backup piece
    backup piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O
    1_MF_NNNDF_TAG20071120T190313_3N5T94SG_.BKP recid=8 stamp=639169396
    deleted backup piece
    backup piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\
    O1_MF_S_639169477_3N5TCPVW_.BKP recid=9 stamp=639169478
    deleted backup piece
    backup piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O
    1_MF_NNNDF_TAG20071120T190500_3N5TDGC9_.BKP recid=10 stamp=639169502
    deleted backup piece
    backup piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\
    O1_MF_S_639169556_3N5TG65X_.BKP recid=11 stamp=639169558
    Deleted 6 objects
    RMAN> delete archivelog all
    2> ;
    released channel: ORA_DISK_1
    allocated channel: ORA_DISK_1
    channel ORA_DISK_1: sid=126 devtype=DISK
    specification does not match any archive log in the recovery catalog
    RMAN> list backup
    2> ;
    RMAN> show retention policy
    2> ;
    RMAN configuration parameters are:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
    SQL> show parameter control_file_record_keep_time
    NAME                                 TYPE        VALUE
    control_file_record_keep_time        integer     1
    SQL> alter system set control_file_record_keep_time=7
      2  /
    System altered.
    SQL> show parameter control_file_record_keep_time
    NAME                                 TYPE        VALUE
    control_file_record_keep_time        integer     7
    SQL>
    RMAN> backup database
    2> ;
    Starting backup at 20-NOV-07
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01.DBF
    input datafile fno=00003 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01.DBF
    input datafile fno=00002 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS01.DBF
    input datafile fno=00004 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.DBF
    channel ORA_DISK_1: starting piece 1 at 20-NOV-07
    channel ORA_DISK_1: finished piece 1 at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O1_MF_NN
    NDF_TAG20071120T191412_3N5TXRSG_.BKP comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:01:15
    Finished backup at 20-NOV-07
    Starting Control File and SPFILE Autobackup at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\O1_MF_S
    _639170131_3N5V03YT_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 20-NOV-07
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 3
    no obsolete backups found
    RMAN> backup database
    2> ;
    Starting backup at 20-NOV-07
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01.DBF
    input datafile fno=00003 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01.DBF
    input datafile fno=00002 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS01.DBF
    input datafile fno=00004 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.DBF
    channel ORA_DISK_1: starting piece 1 at 20-NOV-07
    channel ORA_DISK_1: finished piece 1 at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O1_MF_NN
    NDF_TAG20071120T191655_3N5V2S20_.BKP comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
    Finished backup at 20-NOV-07
    Starting Control File and SPFILE Autobackup at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\O1_MF_S
    _639170261_3N5V462Z_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 20-NOV-07
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 3
    no obsolete backups found
    RMAN> backup database
    2> ;
    Starting backup at 20-NOV-07
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    input datafile fno=00001 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSTEM01.DBF
    input datafile fno=00003 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\SYSAUX01.DBF
    input datafile fno=00002 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\UNDOTBS01.DBF
    input datafile fno=00004 name=C:\ORACLE10G\ORACLE\ORADATA\ORC\ORC\USERS01.DBF
    channel ORA_DISK_1: starting piece 1 at 20-NOV-07
    channel ORA_DISK_1: finished piece 1 at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\BACKUPSET\2007_11_20\O1_MF_NN
    NDF_TAG20071120T191836_3N5V5X20_.BKP comment=NONE
    channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
    Finished backup at 20-NOV-07
    Starting Control File and SPFILE Autobackup at 20-NOV-07
    piece handle=C:\ORACLE\FLASH_RECOVERY_AREA\ORC\ORC\AUTOBACKUP\2007_11_20\O1_MF_S
    _639170362_3N5V7C1K_.BKP comment=NONE
    Finished Control File and SPFILE Autobackup at 20-NOV-07
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 3
    no obsolete backups foundnothing obsolete it means control_file_record_keep_time will not affect backups unless it will be less then or equal
    to retention policy.
    Note : Please agree or disagree with me may be i would be wrong
    Khurram

    Sorry for alls readers after a long practical observation at my own database server i came across that my observation was wrong and absurd in this first post, the above observation is not due to control_file_record_keep_time ,its due to something obvious which i am going to share you guys here.
    RMAN> show retention policy
    2> ;
    RMAN configuration parameters are:
    CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    no obsolete backups found
    RMAN> list backup
    2> ;
    RMAN>AS documentation says
    "Besides affecting datafile and control file backups, the retention policy affects archived logs and archived log backups.
    First, RMAN decides which datafile and control file backups are obsolete. Then, RMAN considers as obsolete all archived
    log backups that are older than the oldest datafile or control file backup that must be retained."
    Now i connect to SQL and create two big table for filling the redo log file and then get it archived.Please
    consider it here that i am getting archived before any taking backup i.e backup database in order to make
    archive older then the oldest datafile.
    SQL> show parameter control_file_record_keep_time
    NAME                                 TYPE        VALUE
    control_file_record_keep_time        integer     7
    SQL> create table a1 as select * from all_objects
      2  /
    Table created.
    SQL> create table a2 as select * from all_objects
      2  /
    Table created.
    C:\>dir C:\oracle\product\10.1.0\flash_recovery_area\ORCL\ARCHIVELOG\2008_03_17
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\oracle\product\10.1.0\flash_recovery_area\ORCL\ARCHIVELOG\2008_03_17
    03/17/2008  03:44 PM    <DIR>          .
    03/17/2008  03:44 PM    <DIR>          ..
    03/17/2008  03:44 PM         9,750,528 O1_MF_1_15_3XWLVK6T_.ARC
                   1 File(s)      9,750,528 bytes
                   2 Dir(s)  62,714,875,904 bytes free
    Now i take backup
    RMAN> backup database
    2> ;
    Starting backup at 17-MAR-08
    using channel ORA_DISK_1
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    no obsolete backups found
    RMAN> backup database
    2> ;
    Starting backup at 17-MAR-08
    using channel ORA_DISK_1
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    Report of obsolete backups and copies
    Type                 Key    Completion Time    Filename/Handle
    Archive Log          402    17-MAR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL\ARCHIVELOG\2008_03_17\O1_MF_1_15_3XWLVK6T_.ARCYou can see the obsolete archived files which is the older then the oldest file which has been obsolete.It also
    does'nt make sense to keep the archived log files which is older then the oldest file cause it will no longer
    be useful for recovery process.
    now back to pavillion
    RMAN> delete obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    using channel ORA_DISK_1
    Deleting the following obsolete backups and copies:
    Type                 Key    Completion Time    Filename/Handle
    Archive Log          402    17-MAR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL\ARCHIVELOG\2008_03_17\O1_MF_1_15_3XWLVK6T_.ARC
    Do you really want to delete the above objects (enter YES or NO)? yes
    deleted archive log
    archive log filename=C:\ORACLE\PRODUCT\10.1.0\FLASH_RECOVERY_AREA\ORCL\ARCHIVELO
    G\2008_03_17\O1_MF_1_15_3XWLVK6T_.ARC recid=402 stamp=649611842
    Deleted 1 objects
    RMAN> delete backup
    2> ;
    using channel ORA_DISK_1
    RMAN> list backup
    2> ;
    C:\>dir C:\oracle\product\10.1.0\flash_recovery_area\ORCL\ARCHIVELOG\2008_03_17
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\oracle\product\10.1.0\flash_recovery_area\ORCL\ARCHIVELOG\2008_
    03_17
    03/17/2008  03:59 PM    <DIR>          .
    03/17/2008  03:59 PM    <DIR>          ..
                   0 File(s)              0 bytes
                   2 Dir(s)  62,724,440,064 bytes freenow this time what i did i created the archived log files after first backup in order to not to make it older
    then the oldest datafile backup.
    RMAN> backup database
    2> ;
    Starting backup at 17-MAR-08
    using channel ORA_DISK_1
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    no obsolete backups foundnow i come to at SQL and make redo log file filled by creating 2 big tables in order to get it archived
    SQL> create table a3 as select * from all_objects
      2  /
    Table created.
    SQL> create table a4 as select * from all_objects
      2  /
    Table created.
    C:\>dir C:\oracle\product\10.1.0\flash_recovery_area\ORCL\ARCHIVELOG\2008_03_17
    Volume in drive C is khurram
    Volume Serial Number is F49D-FF2B
    Directory of C:\oracle\product\10.1.0\flash_recovery_area\ORCL\ARCHIVELOG\2008_
    03_17
    03/17/2008  04:09 PM    <DIR>          .
    03/17/2008  04:09 PM    <DIR>          ..
    03/17/2008  04:09 PM         9,751,552 O1_MF_1_16_3XWNCGRS_.ARC
                   1 File(s)      9,751,552 bytes
                   2 Dir(s)  62,563,205,120 bytes free
    RMAN> backup database
    2> ;
    Starting backup at 17-MAR-08
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting compressed full datafile backupset
    channel ORA_DISK_1: specifying datafile(s) in backupset
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    no obsolete backups foundYou can see no archived logs get obsolete yet cause the archivelog O1_MF_1_16_3XWNCGRS_.ARC
    is not older then oldest datafile backup.
    But this archivelog file will get obsolete if its beyond the retention policy,lest see how ,just take one more
    backup ,as i have already taken two time backup and the moment i go to take third backup it will cross ours
    retetnion policy from the period of 2.
    RMAN> backup database
    2> ;
    RMAN> report obsolete
    2> ;
    RMAN retention policy will be applied to the command
    RMAN retention policy is set to redundancy 2
    Report of obsolete backups and copies
    Type                 Key    Completion Time    Filename/Handle
    Backup Set           240    17-MAR-08
      Backup Piece       231    17-MAR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL\BACKUPSET\2008_03_17\O1_MF_NNNDF_TAG20080317T160604_3XWN4WTB_.B
    KP
    Backup Set           241    17-MAR-08
      Backup Piece       232    17-MAR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL\BACKUPSET\2008_03_17\O1_MF_NCSNF_TAG20080317T160604_3XWN6Z95_.B
    KP
    Archive Log          403    17-MAR-08          C:\ORACLE\PRODUCT\10.1.0\FLASH_RE
    COVERY_AREA\ORCL\ARCHIVELOG\2008_03_17\O1_MF_1_16_3XWNCGRS_.ARCKhurram

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