Backup & Recovery :: How To Recover Database Having Only DBF And CTL Files
Oct 15, 2013
I have the following situation: a customer sent me a group of files, that he said to be a "backup" of an old database, that is no longer online (he doesn´t use our software anymore). However, he needs to recover the data in this database. The person at the company who generate these files doesn´t work there anymore, so we don´t have any of the following information:
- Database version, connection details, service names, user names neither tablespace names.
We were just told that these files were recorded in a DVD, and is que only source remaining.
The files he sent are the following:
Currently my DB is running on 10g Archivelog mode. All the archive logs being generated at /u04/dbarch/.The server crashed yesterday. Now when I want to start my instance it throwing the error ORA-01110 and ORA-01113-- system01.dbf need more recovery.The below are the command I fired from sql prompt:-
SQL>STARTUP MOUNT; SQL>RECOVER DATABASE UNTIL CANCEL; But still oracle suggesting that system01.dbf need more recovery.
multiple disk failure, the database was open at the time.We have managed to recover the data from the disk and have put it on another disk.We have got a new server with oracle 9 running.
A blank database has been created.I have copied the control files and redo files onto the new server and left the datafiles , (.dbf,.ora) on a seperate external disk F drive (this is because the original database resided on F drive)I can mount the database , however when I try to open it I get the following
ORACLE instance started.
Total System Global Area 135338868 bytes Fixed Size 453492 bytes Variable Size 109051904 bytes Database Buffers 25165824 bytes Redo Buffers 667648 bytes Database mounted. ORA-01122: database file 1 failed verification check ORA-01110: data file 1: 'F:ORACLEORADATALCMPROSYSTEM01.DBF' ORA-01207: file is more recent than controlfile - old controlfile
We have faced database(10.2.0) issue cause incomplete recovery and have performed open resetlogs. This DB is of 12Tb. In 10g opening database with reset logs do not invalidate previous backups. we have another replica(no reset state)of this database which we sync using archives.how we can apply those archives(reset database)to previous database?
I am doing some test, seeking your expert opinion.I have a database and have the following backup strategy.
1) Database running in archive log mode. 2) First I backup all the table space excluding one tablespace 'DP_TS_LOB'.
RMAN> CONFIGURE EXCLUDE FOR TABLESPACE 'DP_TS_LOBS'; RMAN> BACKUP DATABASE;
3) I take a separate Backup of DP_TS_LOB tablespace.
RMAN> BACKUP TABLESPACE DP_TS_LOB;
4) I backup all the archived redo logs.
RMAN> SQL 'ALTER SYSTEM ARCHIVE LOG CURRENT'; RMAN> backup archivelog all delete input;
Now I wanted to restore the database from the backup excluding the DP_TS_LOB and bring it up and running. DP_TS_LOB is huge and used only on certain work flows. I don't want the database to be down until we restore DP_TS_LOB. I wanted to restore all the other tablespace and bring the database up operational and restore and recover the DP_TS_LOB tablespace datafile's in background taking the datafiles of DP_TS_LOB tablespace offline.I tried the following but unsuccessful.
RMAN> restore controlfile to 'g:ctl_bckctl_01' from autobackup; RMAN> restore spfile to 'g:ctl_bckspfile' from autobackup; RMAN> sql "create PFILE = ''G:ctl_bckPFILE'' from SPFILE = ''G:ctl_bckSPFILE''";
Update the new parameter with new control file name. Copied the control file and parameter file to corresponding location.
First I assumed "Recover Database" will only recover online database files. But got the following error.
RMAN> recover database;
Starting recover at 27-JUL-11 using channel ORA_DISK_1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 07/27/2011 18:23:03 RMAN-06094: datafile 8 must be restored
Then I tried recovering data file separately, but same error.
RMAN> recover datafile 1;
Starting recover at 27-JUL-11 using channel ORA_DISK_1
RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 07/27/2011 18:24:30 RMAN-06067: RECOVER DATABASE required with a backup or created control file
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.
I'm in the process of testing a restore/recover from a simulated full system and media loss. A level 0 backup was taken from the server, and I'm trying to restore/recover to a point in time on a second server. I have created the database (with the same name) and have been able to successfully restore both the controlfile and spfile from the autobackup.
how does RMAN treat the "set until time"? The level 0 was taken on a database/server that is in CST while the database I'm trying to do a restore/ recover to is in EST. So when trying to do a point in time recovery, should I specify the time in EST or CST?
How i can recover my drop table..i use user managed backup concept after dropping table i cant recover my table..how i use step that my dropped table recover.
Our client has this scenario:May 23th 4:00 PM a user truncate a critical table. The customer need to recover the data before truncate.
The recover materials list like this: 1. A cold backup of this database at May 1th. 2. The archive log except May 1th ~ May 15th. 3. Every day exp at 00:30 and 12:00.
Is there any way to recover the data before truncate table with these material?
My scenario is use RMAN to restore and recover database to a new host.The structure of two hosts are same.
In Host A: 1. Take a full backup. 2. Import a schema which has 191 tables in order to generate archivelogs.
In Host B: I put all the folders(backupset, autobackup, archivelog) to the same directory. But after recovered the database, i checked that schema just has 175 tables, the latest few tables are missing.
How many times i can do recover (TSPITR) a tablespace ? While trying to recover tspitr tablespace on 2nd time i got error message ORA-01178 file 13 created before last create controlfile,but first time it was success.
I have to perform the TSPITR of a tablespace to recover it to a time 03-apr-2011 5 pm.Now I have done that.
Now I find that I need to actually recover it ti 04-apr-2011.Can I again recover the tablespace to 04-Apr after recovering it to 03-Apr by mistake I am not usng recovery catalog;
I have a database for which I use RMAN for backup & recovery. The database is in archivelog mode. Online redo log files are multiplexed and I have more than one destinations for archive logs. If, due to a disk crash, all data files and redo log files are gone - and I have archive logs, one member of each redo log group and a full database backup available, I can recover till the last archived log. But I want to ask that what about the transactions which were not archived at the time of media failure? How can I recover committed transactions which were not archived at the time of crash, and I have a mirrored copy of log group which was current at the time of failure?
while opening my database i got this error i already increase my db_recovery_file_dest_size but still i got this error
E:oracleproduct10.2.0db_1BIN>SET ORACLE_SID=LIVEDB E:oracleproduct10.2.0db_1BIN>SQLPLUS SQL*Plus: Release 10.2.0.4.0 - Production on Thu Mar 22 11:14:47 2012 Copyright (c) 1982, 2007, Oracle. All Rights Reserved. Enter user-name: SYS AS SYSDBA Enter password: Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
I am having a issue, we are trying to restore our db from control files using Symantec Backup exec, but job fails giving me error go to table spaces select all table spaces and unchecked roll forward.
i am unable to find way to uncheck the table spaces. Here is the complete description.
Cause
The system catalog tablespace "syscatspace" contains all of the system catalog information for the tables. Syscatspace needs to be rolled forward first, and then the other tablespaces must be rolled forward.
Solution
Workaround:
When the restore operation is run from a tablespace level backup, perform the rollforward for the syscatspace tablespace first and then for other tablespaces.
Execute the rollforward operation as a DBA operation. The sequence of the recovery process should be as follows:
1. Select all tablespaces, uncheck the rollforward option and run the restore job. 2. Run the rollforward operation as a DBA initiated operation:
rollforward syscatspace to point in time / end of logs. e.g. db2 => rollforward database UEXIT to end of logs and complete Tablespace (SYSCATSPACE) online
3. Perform rollforward of all other tablespaces.
e.g. db2 => rollforward database UEXIT to end of logs and complete tablespace (SYSTOO LSPACE,USERSPACE1) online
Refer to IBM DB2 documentation for more information on DBA-initiated operations.
I have an oracle autoback of controlfile and spfile. I am trying to restore the production database using this backup, into a new server with a different directory structure.
I have completed the following steps in the restore process.
1. Creating a pfile from spfile
2. Changing the the location of cdump, udump, bdump and the control files ( there are three )
3. Then creating a spfile from this pfile
I am stuck on the next step where to rename all the datafiles and tempfile and restore the database. Following is what I did.
After mounting the database in RMAN, tried to run the following.
RMAN> run 2> { 3> allocate channel c1 device type disk 4> ; 5> @/home/oracle/rman_scripts/newloc.rman 6> SET NEWNAME FOR DATAFILE 1 TO '/u02/oradata/dorian/system01.dbf'; 7> SET NEWNAME FOR DATAFILE 2 TO '/u02/oradata/dorian/undotbs01.dbf'; 8> SET NEWNAME FOR DATAFILE 3 TO '/u02/oradata/dorian/sysaux01.dbf'; 9> SET NEWNAME FOR DATAFILE 4 TO '/u02/oradata/dorian/users01.dbf';
[code]....
I am getting the following error message.
Starting restore at 25-JAN-2012 21:26:48 released channel: c1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of restore command at 01/25/2012 21:26:49 RMAN-06026: some targets not found - aborting restore RMAN-06100: no channel to restore a backup or copy of datafile 30 RMAN-06100: no channel to restore a backup or copy of datafile 29 RMAN-06100: no channel to restore a backup or copy of datafile 28
The problem is at times there may not be any archive files that meet this criteria and RMAN throws an error
RMAN-06004: ORACLE error from recovery catalog database: RMAN-20242: specification does not match any archived log in the recovery catalog
I was considering using the following code to see if there are any available .arc files that meet the backup criteria.
set pagesize 0 feedback off verify off heading off echo off; select count(1) from v$archived_log where COMPLETION_TIME < sysdate-$KEEP_ARCHIVE_HOURS/24 and backup_count = 0 and name is not null;
While testing on several systems, I found that the above-mentioned query picked up some redo-logs (*.rdo) I can only assume that these redo logs were used for a DB recovery.
1) Is my assumtion correct about the .rdo files in the v$archived_logs table
2) I would hate to add special logic and look for something like name substr(name, *.arc) (pardon the syntax). Therefore, is there a way to get rid of these *.rdo files?
I had a production db with archive logging enabled
SQL> select name,status 2 from v$archived_log;
NAME STATUS ---------------------------------------- - D:ORACLEARCHIVE_ORCL11_13.DBF A D:ORACLEARCHIVE_ORCL11_14.DBF A D:ORACLEARCHIVE_ORCL11_15.DBF A
[code]...
So i need to restore archivelogs by using sequence
RMAN>RESTORE ARCHIVELOG FROM SEQUENCE 20 UNTIL SEQUENCE 28; So the restore is completed successfully So its very hard to monitor archivelog files i feel i should have included all archivelog files while taking RMAN backup
RMAN >backup database plus archivelog all delete input;
but the problem is my RMAN backup is already 360GB in size and it takes 4-5 hrs to complete .so i need to schedule RMAN backup at one time (e.g sunday) ,delete the archivelog files older than sundayand now schedule the archivelog backup at another day (e.g wed &sat)
my question is where i have to change my script to backup all avaialbe archivelog files if old archivelog files are deleted at os level?
RMAN> run { 2> allocate channel c1 type disk; 3> sql 'alter system archive log current'; 4> backup archivelog all format 'D:oracleackuplog_t%t_s%s_p%p' delete input; 5> release channel c1; 6> }
My operation system is Linux,there is a database on it . the other server's operation system is windows.
SQL> SELECT * FROM V$VERSION;
BANNER ---------------------------------------------------------------- Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod PL/SQL Release 10.2.0.1.0 - Production CORE 10.2.0.1.0 Production TNS for Linux: Version 10.2.0.1.0 - Production NLSRTL Version 10.2.0.1.0 - Production
SQL>
Now,i want to implement hot backup on my oracle database which install the linux operation system ,but i expect the hot backup files can storage on the servers of the Windows operation system directly.
There is an incident that in production database 1000 archive log files generated.From 1000 files, 100 archive log files have been removed.When i take incremental backup next day , what will happen in database?
I have an oracle 8i recovery scenario. I have database cold backups of MONDAY and WEDNESDAY evenings. backup contains control files, data files, redo files
Database runs in Archive log mode and all archives of the month are available. Hard disk crashed on SATURDAY
all archive logs are still available at different location. Control files are not backed up to trace or file name or automatically means no backup control file (except ones in cold backups described above)
restoring all files from cold backup of either MONDAY or WEDNESDAY (I recovered to Wednesday) leaves nothing to recover. Querying V$RECOVER_FILE returns nothing. All log sequences higher to the number nnn displayed as result of ARCHIVE LOG LIST are present at correct location in correct format
My question is how do i ROLL Forward the Database from WEDNESDAY to SATURDAY in the above scenario.
