Accidentally Deleted Empty Datafile At OS Level / Have No Backup Of It
May 2, 2013
Oracle 11G...After creating a new datafile, it was accidentally deleted at OS level (AIX).Because it was new there are no backups of it.Now tablespace thinks there are 3 datafiles in it, but one of them is missing.
Is it possible to recreate an empty data file on-the-fly?It has let me set the datafile to offline, but wouldnt let me do anything else.
Now my backups are failing as it recognises :"the status of database file is RECOVER".
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Oct 30, 2007
10.2 Oracle database on Linux
Someone(a non DBA) removed the only sysaux datafile from the server using the rm command Obviously, the DB is still up and none of the schemas in the database have their objects right now.
This is not a critical database as you can see when I say that I have NO backup whatsoever. Even though I have the option of deleting and recreating the database, i want to know if I can avoid doing that.
Creating a file on the server with the same name OR creating a new datafile for the tablespace OR recreate the sysaux tablespace ?But how to do any of these? What else should be done ?
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Mar 24, 2013
Operating System - WindowXP
oracle version 10.2.0.1
I was learning some recovery part in my home laptop. Database is in Archivelog, flashback mode. All of sudden, i deleted it from OS level with out taking backup of it.
When i tried to open database, it failed to start. Database is in mount mode.while trying to open, it gives message -
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'F:ORACLEPRODUCT10.2.0ORADATADBSYSTEM01.DBF'
I tried to create on file named "UNDOTBS01.DBF" but oracle is not recognizing it.
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Oct 11, 2012
A datafile was deleted from a partitioned table which has 31 partitions , that datafile contains data from day 25 to day 31 st I am not having a backups of this database. but I have all the dumps of that table what is the solution to get those 6 partitions data back.
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Feb 17, 2011
I have a database "BD001" for example, inside got 90 schemes, each one has two tablespaces, see below script I use to create:
CREATE TABLESPACE TS_F_ORA9_027_DAT NOLOGGING DATAFILE
'E: DataBases ORACLE 92 DAT TS_F_ORA9_027_DAT.ora' SIZE 5M REUSE ON AUTOEXTEND
NEXT 10240K MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT
AUTO;
[code]....
I have the dmp this scheme "F_ORA9_027" but have no way to restore it onceI can not connect to the service.
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Oct 22, 2012
Can you take an incremental backup level 1 or level 0 without archivelogs?
syntax would bebackup as compressed backupset cummulative level 1 database.
The reason I ask is because when I run backup as compressed backupset cummulative level 1 database plus archivelogs # it runs fine, but when I run backup as compressed backupset cummulative level 1 database it just hangs.
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Nov 3, 2012
While renaming the datafile.
1) ALTER TABLESPACE .... OFFLINE;
2) CHANGING THE DATAFILE NAME IN OS LEVEL;
3) ALTER TABLESPACE .... RENAME DATAFILE 'FILE_OLD' TO 'FILE_NEW';
4) ALTER TABLESPACE .... ONLINE;
In the above steps, I HAD FORGOTTON TO FOLLOW THE 2ND STEP.
At the step of 3rd, i got error message, now i am not able to change the name in OS level Also.
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Apr 27, 2012
Does change in segment size effect the rman backup size..??
I'm trying to understand do Rman backup the empty block from datafiles..?? And if it escape the empty block than inserting data in tables (increasing the number of used block) might change the size of total backup (Rman) size
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May 16, 2013
note in our database we changed RMAN backup to redundancy 7.
RMAN> show all;
using target database control file instead of recovery catalog
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 7;
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default
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 ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/10.2.0/db_1/dbs/snapcf_mscmada.f'; # default
Also we have scheduled in our dailly backup to delete obsolete backup means to delete backup which completed more that 7 times, but when we check our backup still in our disk for 1 Month.Note we have scheduled to delete obsolete backup dailly.
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Jan 24, 2011
I have 2 seperate rman backup one backup is of only datafile ,spfile and controlfile which i am able to restore and recover without any problem say bkp1 taken at 10 am
other set of backup is of only archive log files of same day but later time than datafile backup say bkp2 taken at 8pm...if i restore and recover bkp1 and try to restore bkp2 it gives error datafile exist (possibly due to fact both backup have control file)
if i just restore bkp1 and try to restore bkp2 so that i can do one recover at time
it gives error datafile permission issue (possibly due to fact both backup have control file)
I want to restore database upto 8pm time how can i use both bkp1 and bkp2 to do it(restore datafiles and apply all archive logs on it)
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Dec 16, 2011
how i can change backup datafile name into its original file name,bcoz at time backup datafile name is different and how i can change that name into its original datafile name so i apply recovery command in user managaed recovery..
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Mar 27, 2012
i want to insert values in another table whatever i deleted. i don't want whole information like backup, i just want deleted information only. whenever any 1 will try to delete any information on my database ,easily i would get to know what,when he has deleted .
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Dec 28, 2011
How i can take manually backup of datafile..using OS command
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Jul 22, 2013
I am trying to practice some RMAN configuration settings.Version 11.2.0.1OS - Linux X86-64 What i wanted to validate is if there is no level 0 backup of database taken, then the level 1 backup will be automatically backing up all the blocks of the database(similar to full backup). RMAN> report schema; Report of database schema for database with db_unique_name DB101 List of Permanent Datafiles
File Size(MB) Tablespace RB segs Datafile Name----1 300 SYSTEM +DATA/db101/datafile/system.257.8208254172 200 SYSAUX *** +DATA/ db101/ datafile/sysaux.268.8208254253 820 UNDOTBS1 *** +DATA/db101/datafile/undotbs1.261.8208254294 5000 TPCCTAB *** +DATA/ db101/ datafile/tpcctab.266.820832485 List of Temporary Files=File Size(MB) Tablespace Maxsize(MB) Tempfile Name---- 1 200..
[code]....
I am not sure what these input bytes are which is not matching with the database size(posted in the beginning of thread)? why it has to show as db full when i actually run a incremental?
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Oct 7, 2010
A full, online backup (database, archived redo logs, and control file autobackup) is done with rman ("nocatalog", Oracle 9i on AIX 5.2) daily. A media manger is not in use, so the backup is written to disk, then written to tape using an operating system utility. There is room on disk for two full backups, so "redundancy = 1" and obsolete backup sets are deleted to free up space immediately before running the next backup. If the backup(s) on disk are lost and the tapes containing these backups are lost, will it be possible to restore a tape containing older "deleted" backups (using an operating system utility) and catalog each backup piece in the current control file? In other words, can backups considered "deleted" in the control file be reintroduced if they're available on tape?
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Jan 23, 2012
I ran into the message RMAN-08138: WARNING: archived log not deleted - must create more backups during a backup. From what I understand this is caused when logs are removed that are needed for recovery.
rman target / nocatalog <<EOT
CONFIGURE CHANNEL DEVICE TYPE DISK clear ;
CONFIGURE CHANNEL DEVICE TYPE TAPE clear ;
CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' clear ;
CONFIGURE RETENTION POLICY TO recovery window of 14 days;
CONFIGURE BACKUP OPTIMIZATION OFF;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
[code].....
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Jan 31, 2011
I am trying to create my database on a new server using rman incremental hot backups.
I have already restored and recovered my level 0 database on new server, but i am not able to restore/recover the level 1 backup on the new server. I have transported level 1 backup irom the old server to the new one. Do i need to recover lvl 1 bkp only or restore it also.
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Oct 18, 2011
I have problem on using "delete obsolete" in RMAN.
First, let describe my backup configuration.
1. Full backup every Monday (17-Oct, 10-Oct, 3-Oct, 26-Sep)
2. Incremental backup for other days
3. Enable autobackup of control file
4. Backup archive log every day
5. RETENTION POLICY TO RECOVERY WINDOW OF 30 DAYS
6. Execute "Delete obsolete" every day
7. control file is used instead of catalog
The results observed:
1. Backup of control files older than 30 days will be deleted
2. Backup of archive log files older than 30 days will be deleted.
3. Backup of datafiles older than ~14 days but before 30 days are also DELETED.
In my example, the backup of datafiles created at 26-Sep is deleted at 16-Oct.
I tried "restore database validate until time "sysdate-22"" at 17-Oct. And RMAN reported "datafile xx will be created automatically during restore operation". It seems that RMAN failed to do restoration up to 22 days ago. The retention policy I set seems not effective on datafile backups.
I checked view v$backup_set and the "Keep" is "No" and "Keep until" is empty.
The only thing I can think of, is the settings of "CONTROL_FILE_RECORD_KEEP_TIME". It is marked "7" in the Oracle, which is less than the retention. But I suppose this only causes the backup not deleted, but NOT be deleted earlier.
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Sep 7, 2012
I'm running ora 11gr2 on windows environment and I got a doubt on a specific situation.
I have to locations for my rman bkps, A and B, which point to different devices, one local and the other remote.
Imagine I take a LEVEL 0 backup on day 20 pointing to both locations, A and B. On day 21, 22 and 23 I take a level 01 backup pointing just to the local destination A. On day 24 I take another LEVEL 0 backup pointing just to location A again....
Now, I want to take a level 1 backup to location B, just to backup the blocks changed since the backup level 0 taken on day 20, bypassing the blocks already taken on days 21, 22, 23...
Is that possible? To control the levels 01 backup from 02 different destinations?
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Jul 24, 2012
I want to know how can i create an empty database in oracle 10g and what is the meaning of empty database. basically i want to perform migration from one database to another database by using exp and imp.
How to create empty database and migrate the database one platform to another platform by using the exp and imp. I have oracle 10g (10.2.0.1.0) on both xp and linux.
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May 20, 2013
Suppose our database have 100 datafiles and right now rman has completed backup of 64 datafile(from file no 1 to file no 64) and in process of backup of 65 number datafile. In mean time I executed some query and it has changed the file no 55. so now my question whether rman will go and bacup this datafile(datafile no 55) again or it will leave this file as it is?
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Feb 10, 2011
We are trying to restore a database on the different server using RAM incremental level 0 and 1 backups. We have weekly Incremental level 0 backups along with incremental backups on daily basis. During recovery of Incremental level 0 backup, RMAN is expecting/looking for Incremental Level 0 backup of prior week as well. Is this the usual process for RMAN to look for prior level 0 backup though we need to restore from the current level 0 backup and roll forward by a week with subsequent Level 1 backup.?
We intend to restore from the Level 0 of 1/16 and roll forward with daily incrementals till 1/22. RMAN is expecting level 0 backupsets from 1/9 backup as well and keep failing since those backups are not available. quick inputs since we are in middle of recovery and trying to resolve if this is even doable.
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Dec 25, 2011
I have noticed a block corruption issue in my RAC database. Its an index , how to recover a corrupted index in system datafile.
SELECT tablespace_name, segment_type, owner, segment_name
FROM dba_extents WHERE file_id = 5
3 and 147551 between block_id AND block_id + blocks - 1;
TABLESPACE_NAME SEGMENT_TYPE OWNER
[code]....
We are using OCFS2 and O/S is RHEL 4.7.
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Oct 13, 2011
I have no backup taken in my oracle server.Today morning i created a data file and unknowingly deleted it. Now i need to restore the datafile with its contents without using RMAN.
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May 17, 2013
As part of an incremental backup I recover copies of the tablespaces. These by default are stored in the disk backup location diskgroup. Is it possible to move these copies to another disk group / location whilst still backing up to the default disk backup location diskgroup. I know how to do it with the main datafiles but not with the copies.
e.g.
Current situation:
Original Datafiles in +DATA
Backups in +FRA
Recovered Datafile copies in +FRA
New setup to be:
Original Datafiles in +DATA
Backups in +FRA
Recovered Datafile copies in +BACKUP
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Nov 6, 2012
i backup my database using rman into my external disk using this command
RMAN> run
2> {
3> backup database format 'H:ackupkp_%u' tag='sh';
4> backup archivelog ALL format 'H:ackuparc_%u' Delete input;
5> }
Starting backup at 06-NOV-12
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=F:ORACLEPRODUCT10.2.0ORADATAORCLSYSTEM01.DBF
[code]...
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Dec 6, 2012
I have to recreate my standby database due to huge archive gap. I have full datafile backup of primary.
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Dec 18, 2012
DB : 10/11g
OS : REHL
can we have a schema backed up into one rman piece?
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Feb 23, 2013
The incremental level 0 backup for database is going more than expected:
status: Failed
backup size:
INC LEVEL 0 229 GB.
But Re-run the backup successfully. backup size is:
INC LEVEl 0 219 GB.
why INC LEVEL 0 was 229 GB? i.e increase 10 GB in size?
NOTE: The RMAN metadata is not deleted.
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Apr 26, 2013
Our client is having requirements that data should be encrypted through-out the process (from transaction level to backup level).
Requirements are as below -
1) Data should be encrypted and can be access only through application (through front end).
2) Even if pl/sql, sql installed, developer user cannot able to fetch data from database.
3) Even DBA, should not have access to fetch the data from the database.
4) Only assigned DBA, should fetch details from database (provided he/she should have details of database as well as application's user / password).
5) It should be restricted by ip and user details (such as ip of application server with user/password of user).
6) Changes should be purely done from database level only.
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