RETENTION POLICY TO REDUNDANCY value
Hi,
in 10g R2 on Win 2003,
we do an incremental rman backup every night excepte sunday and every sunday a full rman backup. We want to be able to restore from last 3 weeks (I mean from 21 days before, if today is 25 of feb, to be able to restore/recover from 4 of Feb). Then what should be the value of RETENTION POLICY TO REDUNDANCY of RMAN catalog ?
Many thanks.
thank you . How about this :
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/setup005.htm#sthref261
3.5.5.1 Configuring a Recovery Window-Based Retention Policy
The RECOVERY WINDOW parameter of the CONFIGURE command specifies the number of days between the current time and the earliest point of recoverability. RMAN does not consider any full or level 0 incremental backup as obsolete if it falls within the recovery window. Additionally, RMAN retains all archived logs and level 1 incremental backups that are needed to recover to a random point within the window.
Run the CONFIGURE RETENTION POLICY command at the RMAN prompt. This example ensures that you can recover the database to any point within the last week:
RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
RMAN does not automatically delete backups rendered obsolete by the recovery window. Instead, RMAN shows them as OBSOLETE in the REPORT OBSOLETE output and in the OBSOLETE column of V$BACKUP_FILES. RMAN deletes obsolete files if you run the DELETE OBSOLETE command.
3.5.5.2 Configuring a Redundancy-Based Retention Policy
The REDUNDANCY parameter of the CONFIGURE RETENTION POLICY command specifies how many backups of each datafile and control file that RMAN should keep. In other words, if the number of backups for a specific datafile or control file exceeds the REDUNDANCY setting, then RMAN considers the extra backups as obsolete. The default retention policy is REDUNDANCY=1.
As you produce more backups, RMAN keeps track of which ones to retain and which are obsolete. RMAN retains all archived logs and incremental backups that are needed to recover the nonobsolete backups.
Assume that you make a backup of datafile 7 on Monday, Tuesday, Wednesday, and Thursday. You now have four backups of the datafile. If REDUNDANCY is 2, then the Monday and Tuesday backups are obsolete. If you make another backup on Friday, then the Wednesday backup becomes obsolete.
Run the CONFIGURE RETENTION POLICY command at the RMAN prompt, as in the following example:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
3.5.5.3 Showing the Current Retention Policy
RMAN> SHOW RETENTION POLICY;
see V$RMAN_CONFIGURATION
Similar Messages
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CONFIGURE RETENTION POLICY TO REDUNDANCY 0
Our database is 11g R2, below is our RMAN script
Presently our retention policy is 1, so 1 backup is retained along with the current backup.
I Just want to have 1 backup, i.e RMAN should take the backup and delete the old bacup.
Will it work if i change the retention policy to 0 ?
RUN
ALLOCATE CHANNEL ch1 DEVICE TYPE DISK;
ALLOCATE CHANNEL ch2 DEVICE TYPE DISK;
ALLOCATE CHANNEL ch3 DEVICE TYPE DISK;
DELETE NOPROMPT OBSOLETE;
BACKUP DATABASE INCLUDE CURRENT CONTROLFILE format 'G:\Oracle\flash_recovery_area\BACKUPSET\tmp\rman_backup\df_%d_%s_%p_%T';
SQL "ALTER SYSTEM ARCHIVE LOG CURRENT";
BACKUP ARCHIVELOG ALL DELETE INPUT format 'G:\Oracle\flash_recovery_area\BACKUPSET\tmp\rman_backup\df_%d_%s_%p_%T';
RMAN> show all
2> ;
using target database control file instead of recovery catalog
CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
CONFIGURE BACKUP OPTIMIZATION OFF; # defaultEdited by: user10243788 on Apr 24, 2012 1:14 AMuser10243788 wrote:
Our database is 11g R2, below is our RMAN script
Presently our retention policy is 1, so 1 backup is retained along with the current backup.
I Just want to have 1 backup, i.e RMAN should take the backup and delete the old bacup.
Will it work if i change the retention policy to 0 ?You cannot set the retention policy to redundancy 0 because redundancy count must be greater than zero.
>
RUN
ALLOCATE CHANNEL ch1 DEVICE TYPE DISK;
ALLOCATE CHANNEL ch2 DEVICE TYPE DISK;
ALLOCATE CHANNEL ch3 DEVICE TYPE DISK;
DELETE NOPROMPT OBSOLETE;
BACKUP DATABASE INCLUDE CURRENT CONTROLFILE format 'G:\Oracle\flash_recovery_area\BACKUPSET\tmp\rman_backup\df_%d_%s_%p_%T';
SQL "ALTER SYSTEM ARCHIVE LOG CURRENT";
BACKUP ARCHIVELOG ALL DELETE INPUT format 'G:\Oracle\flash_recovery_area\BACKUPSET\tmp\rman_backup\df_%d_%s_%p_%T';
}Just switch the order of operation:
use
BACKUP DATABASE INCLUDE CURRENT CONTROLFILE format 'G:\Oracle\flash_recovery_area\BACKUPSET\tmp\rman_backup\df_%d_%s_%p_%T';
DELETE NOPROMPT OBSOLETE;
instead of
DELETE NOPROMPT OBSOLETE;
BACKUP DATABASE INCLUDE CURRENT CONTROLFILE format 'G:\Oracle\flash_recovery_area\BACKUPSET\tmp\rman_backup\df_%d_%s_%p_%T';
You can also exclude the operation SQL "ALTER SYSTEM ARCHIVE LOG CURRENT" because BACKUP ARCHIVELOG ALL implicitly switch logfile before archiving. -
RMAN Backups with retention policy to redundancy 1 doesn't work fine.
Hi experts,
I have a Oracle database with the following system backups:
Monday: ArchiveLog Backup
Tuesday: Full Backup
Wednesday: ArchiveLog Backup
Thursday: ArchiveLog Backup
Friday : Full Backup
Saturday: ArchiveLog Backup
Sunday: ArchiveLog Backup
ArchiveLog Backup = backup tag 'ARCHIVELOG_BACKUP' device type disk archivelog all not backed up delete all input;
Full Backup = backup tag 'FULL_BACKUP' device type disk database skip readonly plus archivelog tag 'FULL_BACKUP_ARCHIVELOGS';
crosscheck backup;
crosscheck copy;
delete noprompt obsolete;
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
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 8;
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 ARCHIVELOG DELETION POLICY TO NONE; # default
What this system has done until last two weeks? For example:
Tuesday : Full Backup
Wednesday: ArchiveLog Backup
Thursday: ArchiveLog Backup
Friday : Full Backup - > After that, Full backup from Tuesday and ArchiveLog backups from Wed, and Thurs, are deleted. (Thanks to Retention policy) .
What this system do now?
Tuesday : Full Backup
Wednesday: ArchiveLog Backup
Thursday: ArchiveLog Backup
Friday : Full Backup - > After that, Full backup from Tuesday are deleted but not ArchiveLog backups from Wed, and Thurs.
When I execute a crosscheck on RMAN return that all are AVAILABLE.
My question is: What is right? The system backups before or after?
Thanks for your help!You are confused about the purpose of crosscheck.
There are two concepts for which you must grasp the distinction.
- Expired
- Obsolete
Expired
When an archive log is written, or rman makes a backup, a record of that archivelog or backupset is written to the repository in the control file.
Crosscheck simply checks the existence of the archivelogs or backupsets that are recorded in the repository. If something went missing (say, if you used an OS command to delete archivelogs), the record of the missing file is marked as 'expired'. If you follow the crosscheck command with a 'delete expired' command, the repository records that have been marked 'expired' are deleted from the repository, so rman has no more memory of those files. Note that 'expired' has nothing to do with retention policy. Also note that if you do not actually issue the 'delete expired' command, the expired records will remain in the repository.
Obsolete
The retention policy deals with when a backupset is obsolete, meaning it is no longer needed to protect the retention period. Backupset are not marked as obsolete. They are evaluated for obsolescence at the time of a command that needs it -- "report obsolete" or "delete obsolete", or when FRA maintenance requires an implied 'delete obsolete'. -
ASM and CONFIGURE RETENTION POLICY TO REDUNDANCY 1
I have a 11gR2 database in Linux. ALL the database files (including ARCHIVELOGs) are in ASM. I'm configuing and using RMAN in order to backup the DB & ArchiveLogs.
I have "CONFIGURE RETENTION POLICY TO REDUNDANCY 1" configured.
Please help me understand its meaning and function within ASM.
I thought that based on that configuation that my OBSOLETE ARCHIVELOG files within ASM would be automatically be deleted?
So once I completed my second set of backups, when I executed, "DELETE NOPROMPT OBSOLETE" & "DELETE NOPROMPT EXPIRED ARCHIVELOG ALL", that the first second of ARCHIVELOG backups would be deleted?
...thanks in advanceASM has nothing to do with retention or deletion. You can find the definition of redundancy in the docs at http://tahiti.oracle.com
-
CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
Hi all,
we would like to create one a week a full backup level 0 and every day a level 1 cumulative RMAN backup.
We would like to configure RMAN that he only holds one cumulative and the full backup.
Does we can use the parameter RETENTION POLICY 1 or RMAN also delete the full backup after a day ?.
Otherwise we need to configure it to 7 days and and delete the other level 1 backups by script.
Thanks
*T>
We would like to configure RMAN that he only holds one cumulative and the full backup.
Thanks
*TYou can't do this. RMAN holds all cumulative level 1 backups that is relationship to Level 0 backup. But as soon as you make level 0 backup at next week old level 0 and related cumulative backups will be obsolete.
Unfortunately you should delete manual the previosly cumulative backups.
You don't necessary RETENTION POLICY to 7. Leave it to 1. One level 0 and the last cumulative lvl 1 backup is enough for recovering. -
Purpose of Retention Policy Recovery Window and Redundancy
Hi,
Good Evening,
I have some queries regarding the RMAN Retention Policy Recovery Window and Redundancy.
1. Any condition is there to set the Retention Policy Recovery Window and Redundancy and control_file_record_keep_time?What is the relationship between these 3 parameters?
2. Explain the scenario if i set the control_file_record_keep_time=4 Redundancy=3 and Recovery Window=7?
3. If i set the Redundancy=3 and Recovery Window=7 means my backup place only have 3 copies of backup based on the redundancy then what is the purpose of Recovery Window=7 please give some example.
4. If i change the values for Recovery Window=3 and Redundancy=7 what will happened, how many days backup will be available in my FRA location?Explain with one scenario?
Thanks in advance.
Vijay.Hi,
Take a look of the above doc contents:
Configuring the Backup Retention Policy
As explained in "Backup Retention Policies", the backup retention policy specifies which backups must be retained to meet your data recovery requirements. This policy can be based on a recovery window or redundancy. Use the CONFIGURE RETENTION POLICY command to specify the retention policy.
so you have option to choose either recovery windows or redundancy based you can set the configuration like
read in the Doc What it said for both:
Recovery Window-Based Retention Policy ==>RMAN does not consider any full or level 0 incremental backup as obsolete if it falls within the recovery window. Additionally, RMAN retains all archived logs and level 1 incremental backups that are needed to recover to a random point within the window.
Redundancy-Based Retention Policy==>The REDUNDANCY parameter of the CONFIGURE RETENTION POLICY command specifies how many full or level 0 backups of each datafile and control file that RMAN should keep. If the number of full or level 0 backups for a specific datafile or control file exceeds the REDUNDANCY setting, then RMAN considers the extra backups as obsolete. The default retention policy is REDUNDANCY 1.
RMAN> show RETENTION POLICY;
using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name DDTEST are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
old RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
new RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
new RMAN configuration parameters are successfully stored
RMAN> show RETENTION POLICY;
RMAN configuration parameters for database with db_unique_name DDTEST are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
old RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
new RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
new RMAN configuration parameters are successfully stored
RMAN> show RETENTION POLICY;
RMAN configuration parameters for database with db_unique_name DDTEST are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
CONTROL_FILE_RECORD_KEEP_TIME:This parameter applies only to records in the control file that are circularly reusable (such as archive log records and various backup records) ref Doc:CONTROL_FILE_RECORD_KEEP_TIME
1. Any condition is there to set the Retention Policy Recovery Window and Redundancy and control_file_record_keep_time?What is the relationship between these 3 parameters?
2. Explain the scenario if i set the control_file_record_keep_time=4 Redundancy=3 and Recovery Window=7?
3. If i set the Redundancy=3 and Recovery Window=7 means my backup place only have 3 copies of backup based on the redundancy then what is the purpose of Recovery Window=7 please give some example.
4. If i change the values for Recovery Window=3 and Redundancy=7 what will happened, how many days backup will be available in my FRA location?Explain with one scenario?
so i believe you can get the Answer from Your Question from Above details.
HTH -
When Retention policy is set as REDUNDANCY
DB version: 10.2.0.4
Just trying to understand the concept of Redundancy.
If i set my Retention Policy set to REDUNDANCY like
CONFIGURE RETENTION POLICY TO REDUNDANCY 4;and all the backup files are stored in one location like '/u04/rmanbkp/' then multiple copies (4 of them) of the same datafile with different names (unique names generated using U% setting) will be created here. Right?
The next day all these datafile copies will be obsolete. Right?
Recovery Window retention policy is more widely used than Redundancy . Right?on the 5th day,the first (out of 4 copies) copy of backup becomes obseleteprovided that you do exactly one backup every day. If you do 6 backups a day -- e.g. every 4 hours -- you'd be obsoleting a backup less than 24 hours old !
So, if you are DBA new to a site, ask first "how many backups we do, what is the RETENTION Policy" ?
Hemant K Chitale -
Basic question on setting Redundancy as the Retention policy
DB version:11g
I am planning to implement Differential Incremental Backup for my database. My strategy is
Sunday --> Level 0 backup
Monday --> Level 1 backup
Tuesday--> Level 1 backup
Wednesday--> Level 1 backup
Thursday--> Level 1 backup
Friday--> Level 1 backup
Saturday--> Level 1 backup
Again, the new weekly backup cycle starts
Sunday --> Level 0 backup
Monday --> Level 1 backup
.Retention Policy set to Recovery Window
==========================
I understand What Recovery window retention policy means.If i configure
'CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;' This means only those backups which are older than 7 days will be reported as obsolete when the 'delete obsolete' command is executed.
Retention Policy set to Redundancy
=============================
But i am a bit confused about Retention Policy set to Redundancy:
Does
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;mean that you maintain 3 copies of backups on different disk locations ? How does this fit in with my above mentioned incremental backup strategy?Thank you Centinul.
If REDUNDANY simply means maintain N number of copies of datafiles then what does
BACKUP DEVICE TYPE DISK COPIES 3 DATAFILE 7 FORMAT '/u02/orabkp/%U','/u01/oradata/%U';command do?Are they both the same? -
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
KhurramSorry 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 -
Dear all,
I want to check rman catalog to confirm if the records are being removed as per the retention and backup policy we have implemented in our system.
which means; how many days of incremental backups are on FRA before oracle removes from controlfile catalog and from disk. How can I check that?
Our system is running in 11.2.0.2.3 version under Redhat linux 5 and we are using ASM.
RMAN> show all;
using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name ADVDB are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
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 PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
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 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+ORAFLASH/sncforcl.ora';
RMAN>
sql > show parameter control_file_record_keep_time
NAME TYPE VALUE
control_file_record_keep_time integer 31Thank you,
Diegoasifkabirdba wrote:
run {
crosscheck backup;
delete noprompt obsolete;
Run this on RMAN and check.
Regards
Asif Kabir
Handle: 899660
Status Level: Newbie
Registered: Nov 29, 2011
Total Posts: 22
Total Questions: *6 (6 unresolved)*
-- If answered close the thread and mark your post as correct/helpfulHi Asif,
Thank you, but, I am asking how to check how many days of incremental backups are on Flash Recovery Area before oracle removes from controlfile catalog and from disk -
Retention policy for archivelogs in the flash recovery area
I am using the flash recovery area for all my backup files (archive logs, data and control files). I want to use the redundancy retention policy because it is easy to calculate the space requirement. However, I am not clear how the retention policy applies to archive logs.
Say I set the retention policy to be "keeping 3 backups". How does it affect the archive logs? Will archive logs in the flash recovery area be deleted automatically or I need to do it manually. If they are deleted automatically just like dataset files, what is the "retention policy" for them? I do not have a tape device so all archive logs are going to be stay in disk.
Thanks.I am using the flash recovery area for all my backup
files (archive logs, data and control files). I want
to use the redundancy retention policy because it is
easy to calculate the space requirement. However, I
am not clear how the retention policy applies to
archive logs.
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 -
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.htmlKhurramHmmm, 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." -
Retention Policy and report/delete obsolete
The database is Oracle 9i on Solaris 8 Platform.
The backup of datafiles and archivelog files use tape and run every night.
The backups should be held for two weeks therefore using RMAN retention policy with REPORT / DELETE OBSOLETE will be the apropiate method. Unfortunatelly somehow none of the two methods of retention policy RECOVERY WINDOW or REDUNDANCY don't seem to work. The big question is WHY?
I configured the retention policy using:
CONFIGURE RETENTION POLICY TO REDUNDANCY 7
Then ALLOCATE CHANNEL FOR MAINTENANCE DEVICE TYPE sbt;
I ran CROSSCHECK BACKUP with a correct output and then REPORT OBSOLETE. The report displays all existing backups - (SYSDATE-2)!
If using RECOVERY WINDOW OF 7 DAYS then the obsolete report displays the list of backups - (SYSDATE-1).
Somehow whatever number I use (7/9/5)in any of the retention policy the result is identical with the one above!Really I do not know if there is a limitation regarding that aspect if you take the backups in tapes directly. I have implanted and I have seen it function well when backups are store directly in disk.
Find out here if that is a limitation.
Recovery Manager Quick Reference Contents / Search / / PDF
Recovery Manager Reference Contents / Search / Index / PDF
Recovery Manager User's Guide Contents / Search / Index / PDF
http://otn.oracle.com/pls/db92/db92.docindex?remark=homepage
Joel P�rez -
Retention policy configuration
Hi, I need some clarification regarding the two configuration parameter of retention policy, so please help me regarding this , I am giving my view about both the configuration
1 . CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
Explanation => This configuration ensure that there can be the maximum of three backup of copies of a data file and control file, we we take the backup for our database/ datafile/ control file for the 4th times, then our previous backup which was taken for the first time will be not be in used, it become obsolete...
suppose on the above configuration , the first backup will be obsolete after taking the database/datafile/controlfile
backup for fourth time...when we take the backup for 5th time, the process will goes as previous , the second backup that was taken earlier will become obsolete..
2.CONFIGURE RETENTION POLICY TO RECOVER WINDOW OF 5 DAYS;
Explanation = > This configuration deals basically with the time based..here the main concept is that the backup will be there of period basis. The recovery window is a period of time that begins with the current time and extend backward in time to the period of recoverability is the earliest time.
Here, the backup that was taken early will remain there unless and until the specified days does not met..
on the above configuration the backup will remain and can be in use that was taken from last five days
suppose. today is 08/11/2010, and the back up is taken then the backup can be recovered form 04th of nov..
Please show me the right path regarding my view and clear up my concept if I am wrong....
Thanks in advanceHi,
Welcome to forums.. !!
1 . CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
Explanation => This configuration ensure that there can be the maximum of three backup of copies of a data file and control file, we we take the backup for our database/ datafile/ control file for the 4th times, then our previous backup which was taken for the first time will be not be in used, it become obsolete...
suppose on the above configuration , the first backup will be obsolete after taking the database/datafile/controlfile
backup for fourth time...when we take the backup for 5th time, the process will goes as previous , the second backup that was taken earlier will become obsolete..
2.CONFIGURE RETENTION POLICY TO RECOVER WINDOW OF 5 DAYS;
Explanation = > This configuration deals basically with the time based..here the main concept is that the backup will be there of period basis. The recovery window is a period of time that begins with the current time and extend backward in time to the period of recoverability is the earliest time.
Here, the backup that was taken early will remain there unless and until the specified days does not met..
on the above configuration the backup will remain and can be in use that was taken from last five days
suppose. today is 08/11/2010, and the back up is taken then the backup can be recovered form 04th of nov..Your understanding is correct. some times if the backups will not become obsolete, under the recovery window, when it needs for recovery.
- Pavan Kumar N -
Not set configure retention policy to recovery window of 7 days
HI all,
if parameter "" configure retention policy to recovery window of 7 days "" is not set
then i am taking weekly and inreamental cumulative backup any effect of backup
i think in this case delete obsolete is not working.
currently parameter set is CONFIGURE RETENTION POLICY TO REDUNDANCY 1;HI all,
if parameter "" configure retention policy to recovery window of 7 days "" is not set
then i am taking weekly and inreamental cumulative backup any effect of backup
i think in this case delete obsolete is not working.
currently parameter set is CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
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