How to restore archive logs with rman
Hi,
here is the scenario:
we have lost everything because of disk failure.
we have a full cold backup and archivelog backups which were created after cold backup and were backed up with rman.
after restoring from cold backup, because archivelog backups do not exist in controlfile, how can we catalog archivelog backups and restore them?
could you give me the exact rman command for this?
Best Regards,
Kamil
cold backup means offline backup, you shut database normally and copy datafiles to another location.
i think operating system does not matter that much but it is RedHat Linux Enterprise Server.
backing up archivelogs whith rman script which is:
run {
allocate channel c1 type disk format '$BKUPLOC/arch_%d_%u_%s_%p.bkp';
change archivelog all validate;
sql 'ALTER SYSTEM ARCHIVE LOG CURRENT';
backup archivelog time between 'SYSDATE - (30*60/(60*60*24))' and 'sysdate';
release channel c1;
so here is the details.
1. because everything is lost, we restored all files(datafiles, controlfiles, redologs etc) from offline backup meaning copied all files from another location to corresponding location.
2. want to apply archive logs which were created after cold backup till disk failure and we have these archive logs with backups which were taken by rman.
So
first of all, we want to register these archive log rman backups(because these backup information does not exist in restored controlfile)
and then restore them and then apply them.
we need rman commands to register these backups and restore them.
Regards,
Kamil
Similar Messages
-
RMAN9I HOW TO RESTORE ARCHIVE LOGS WITH LIMITED DISK SPACE
제품 : RMAN
작성날짜 : 2002-12-09
RMAN9I HOW TO RESTORE ARCHIVE LOGS WITH LIMITED DISK SPACE
==========================================================
PURPOSE
이 자료는 Oracle 9.2 이상의 RMAN에서 사용 가능한 MAXSIZE 기능에 대하여
설명할 것이다.
How to restore archive logs with limited disk space
Old Backup을 사용하여 RMAN으로 database를 recvoery할때, 모든 archived
redo logfile들을 Restore할 destination의 disk space가 모자란 경우를 종종 만난다.
이러한 경우 여러 개의 restore and recovery job으로 나누어 수행한다.
즉, 첫 번째 restore and recovery job이 끝나면 archived redo logfile들을 지우고
다음 적용될 것들을 restore한다. 그리고 다시 Recovery를 수행한다. 이러한 작업을
원하는 시점까지 recovery를 하기위해 반복적으로 수행한다.
Oracle 9iR2(9.2.0.x)부터 RMAN은 MAXSIZE option을 제공하는데 이것은 archive log
file이 restore될 disk의 space를 control할 수 있게 해 준다.
만약 disk space가 매우 제한적이라면, 즉 예를 들어 모든 archive log의 size 합보다
disk free space가 적다면 MAXSIZE option을 사용하는 것은 매우 유용하다.
이 OPTION이 기술되면 RMAN은 Media Manager에게 disk space 크기에 부합하는 만큼만
archive log들을 restore하도록 한다. 부가적인 restore operation들은 restore된
마지막 archive log가 적용될 때마다 발생한다.
MAXSIZE option은 이러한 작업들을 하나의 rman job으로 처리하게 해 주고
실수를 하지 않게 해 준다.
아래는 MAXSIZE를 설명하기 위한 예제이며 총 6 단계로 구성되어 있다.
STEP 1: Add data to the database to enforce log switches
STEP 2: Backup the database and archive logs and delete the logs
STEP 3: Add additional data to enforce new log switches
STEP 4: Remove the data file and simulate a database crash
STEP 5: Restore the data file from the backup
STEP 6: Recover the database using MAXSIZE
위 예제는 Unix와 Windows 모두에 적용될 수 있다.
STEP 6 는 다음과 같은 조건으로 두 번 수행될 것이다.
1) MAXSIZE가 archive log size보다 작은 경우:
이 경우 RMAN-6558 Error message를 만나게 된다.
그러므로 MAXSIZE를 archive log보다는 크게 설정해야한다.
2) MAXSIZE가 archive log size보다 큰 경우:
예를 들어 여러 개의 archive log를 포함할 수 있을 정도로 크게 설정하면
restore/recovery는 user에게 transparent하게 수행되어진다.
즉 archive log들은 restore된 후 applied되고 deleted되어 진다. 다시 새로운
archive log들이 restore되어지고 applied된 후 deleted 되어 진다. 이러한 작업은
recovery가 끝날 때까지 반복되어진다. 이러한 작업들이 진행되는 동안 RMAN은
아무런 Message도 발생시키지 않는다.
# Step 1: INSERT enough new data to generate log switches
create table rman_tst (col1 varchar2 (10));
begin
for i in 1..30000 loop
insert into rman_tst values(i,'test');
commit;
end loop;
end;
# Step 2: BACKUP the database and the archive logs automatically
# and then delete the input
run {
backup database format='/web01/usupport/krosenme/admin/backups/db_%d%s%t'
plus archivelog format='/web01/usupport/krosenme/admin/backups/arch_%d%s%t'
delete input;
# Step 3: INSERT enough new data to generate new log switches
begin
for i in 1..30000 loop
insert into rman_tst values(i,'test');
commit;
end loop;
end;
# Step 4: REMOVE users01.dbf file and crash the database
mv users01.dbf users01.org
shutdown abort
# Restore is now needed as the data file is deleted. The backup was
# taken before the new data was added to it, thus archive logs are
# needed to bring the database up to date
# Step 5: RESTORE the data file from the full backup
run {
restore datafile '/web01/usupport/krosenme/oradata/kro_920/users01.dbf';
# Step 6: RECOVER
run {
recover database delete archivelog maxsize 10 K;
# This will fail with RMAN-6558 as the archived log has a size of 16 KB,
# which is bigger than MAXSIZE limit of 10 KB. So the error is expected
# and MAXSIZE works as designed.
# Now rerunning STEP 6: but with MAXSIZE 50 K
run {
recover database delete archivelog maxsize 50 K;
RELATED DOCUMENTS
Recovery Manager Reference, Release 2 (9.2)cold backup means offline backup, you shut database normally and copy datafiles to another location.
i think operating system does not matter that much but it is RedHat Linux Enterprise Server.
backing up archivelogs whith rman script which is:
run {
allocate channel c1 type disk format '$BKUPLOC/arch_%d_%u_%s_%p.bkp';
change archivelog all validate;
sql 'ALTER SYSTEM ARCHIVE LOG CURRENT';
backup archivelog time between 'SYSDATE - (30*60/(60*60*24))' and 'sysdate';
release channel c1;
so here is the details.
1. because everything is lost, we restored all files(datafiles, controlfiles, redologs etc) from offline backup meaning copied all files from another location to corresponding location.
2. want to apply archive logs which were created after cold backup till disk failure and we have these archive logs with backups which were taken by rman.
So
first of all, we want to register these archive log rman backups(because these backup information does not exist in restored controlfile)
and then restore them and then apply them.
we need rman commands to register these backups and restore them.
Regards,
Kamil -
How to delete archive log by RMAN.
Hi All,
How to delete archive log by RMAN and what is the difference between
delete all input & all delete input in RMAN backup.plus archivelog all delete inputYou get an error on the syntax.
"PLUS ARCHIVELOG" does not allow the "ALL" keyword.
(See "backupSpecOperand" in the RMAN Documentation of the BACKUP command syntax).
However, "DELETE INPUT" allows the optional "ALL" keyword as in "DELETE ALL INPUT" to delete from all archivelog destinations.
I guess that you have confused the "ALL" keyword in "BACKUP ARCHIVELOG" as being possible in "BACKUP .. PLUS ARCHIVELOG".
"ALL" is allowed in "BACKUP ARCHIVELOG" but not in "BACKUP .. PLUS ARCHIVELOG".
Hemant K Chitale -
Hi gurus,
I'm in a question, How to restore archive logs backuped?
Scene:
1- We backup the archive logs each hour.
2- We backup the database in a cold backup.
3- We restore the database in another machine.
4- We want to apply this archives in the database restored.
We already do:
1- Restore the archive logs in a temp directory;
2- Shutdown the application
3- Startup Mount
4- rman nocatalog target /
Possibilities already do:
5- Run the command:
RUN {
SET ARCHIVELOG DESTINATION to '/oracle/PRD/saparch';
RESTORE ARCHIVELOG FROM SEQUENCE 52939 UNTIL SEQUENCE 53333;
OR
RESTORE DATABASE UNTIL TIME "TO_DATE('2011-09-06:15:00:00','YYYY-MM-DD:HH24:MI:SS')";
RECOVER DATABASE UNTIL TIME "TO_DATE('2011-09-06:12:00:00','YYYY-MM-DD:HH24:MI:SS')";
OR
RUN
SET ARCHIVELOG DESTINATION TO '/oracle/PRD/saparch';
RESTORE ARCHIVELOG ALL;
To test if this procedure were correct, we got the total entries of a table in production database.
After this procedures, we check a total entries of a table in database restored and the entries isn't equal a production database.
Could you help us?
Thanks,
Denis
Oracle 10g
Aix 6.1
BrazilHI,
Volker thanks for your replies.
This are the outputs of the commands:
unbru10@root:/:#ls -ltr /oracle/PRD/sapbackup | tail -15
-rwxrwxrwx 1 oraprd dba 422 Mar 22 20:00 backPRD.log
-rwxrwxrwx 1 oraprd dba 9711 Sep 09 16:50 vegsxylp.crv
-rwxrwxrwx 1 oraprd dba 4589 Sep 09 16:51 vegsxyrq.crv
-rwxrwxrwx 1 oraprd dba 4366 Sep 09 16:52 vegsxyuk.crv
-rwxrwxrwx 1 oraprd dba 2461 Sep 12 10:15 vegtlilw.crv
-rwxrwxrwx 1 oraprd dba 1731 Sep 13 07:57 regtpunt.rsa
-rwxrwxrwx 1 oraprd dba 1731 Sep 13 08:06 regtpvix.rsa
-rwxrwxrwx 1 oraprd dba 16224 Sep 13 08:18 vegtpvwk.crv
-rwxrwxrwx 1 oraprd dba 393 Sep 13 08:20 restPRD.log
-rwxrwxrwx 1 oraprd dba 1724 Sep 13 08:20 regtpwqi.rsb
-rwxrwxrwx 1 oraprd dba 5362 Sep 13 08:21 vegtpwqv.crv
-rwxrwxrwx 1 oraprd dba 4367 Sep 13 08:23 vegtpwwa.crv
-rw-r--r-- 1 oraprd dba 8150 Sep 13 08:25 vegtpwyx.crv
-rwxrwxrwx 1 oraprd dba 729 Sep 13 10:29 recovPRD.log
-rw-r--r-- 1 oraprd dba 2461 Sep 13 10:29 vegtqhyk.crv
unbru10@root:/:#ls -ltr /oracle/PRD/saparch | tail -30
-rw-r----- 1 oraprd dba 13652992 Sep 06 14:36 PRDarch1_55003_741174238.dbf
-rw-r----- 1 oraprd dba 13586432 Sep 06 14:44 PRDarch1_55004_741174238.dbf
-rw-r----- 1 oraprd dba 13580288 Sep 06 15:04 PRDarch1_55005_741174238.dbf
-rw-r----- 1 oraprd dba 13630976 Sep 06 15:20 PRDarch1_55006_741174238.dbf
-rw-r----- 1 oraprd dba 13586432 Sep 06 15:22 PRDarch1_55007_741174238.dbf
-rw-r----- 1 oraprd dba 13586432 Sep 06 15:26 PRDarch1_55008_741174238.dbf
-rw-r----- 1 oraprd dba 13591552 Sep 06 15:27 PRDarch1_55009_741174238.dbf
-rw-r----- 1 oraprd dba 13609472 Sep 06 15:35 PRDarch1_55010_741174238.dbf
-rw-r----- 1 oraprd dba 13620736 Sep 06 15:42 PRDarch1_55011_741174238.dbf
-rw-r----- 1 oraprd dba 13586432 Sep 06 15:43 PRDarch1_55012_741174238.dbf
-rw-r----- 1 oraprd dba 14359040 Sep 06 15:44 PRDarch1_55013_741174238.dbf
-rw-r----- 1 oraprd dba 13609472 Sep 06 15:45 PRDarch1_55014_741174238.dbf
-rw-r----- 1 oraprd dba 13585408 Sep 06 15:51 PRDarch1_55015_741174238.dbf
-rw-r----- 1 oraprd dba 13582848 Sep 06 16:00 PRDarch1_55016_741174238.dbf
-rw-r----- 1 oraprd dba 13687808 Sep 06 16:15 PRDarch1_55017_741174238.dbf
-rw-r----- 1 oraprd dba 13589504 Sep 06 16:17 PRDarch1_55018_741174238.dbf
-rw-r----- 1 oraprd dba 13586944 Sep 06 16:22 PRDarch1_55019_741174238.dbf
-rw-r----- 1 oraprd dba 13721088 Sep 06 16:35 PRDarch1_55020_741174238.dbf
-rw-r----- 1 oraprd dba 13642240 Sep 06 16:47 PRDarch1_55021_741174238.dbf
-rw-r----- 1 oraprd dba 13623808 Sep 06 16:47 PRDarch1_55022_741174238.dbf
-rw-r----- 1 oraprd dba 13584896 Sep 06 16:55 PRDarch1_55023_741174238.dbf
-rw-r----- 1 oraprd dba 13629440 Sep 06 16:57 PRDarch1_55024_741174238.dbf
-rw-r----- 1 oraprd dba 13608448 Sep 06 17:09 PRDarch1_55025_741174238.dbf
-rw-r----- 1 oraprd dba 13616640 Sep 06 17:30 PRDarch1_55026_741174238.dbf
-rw-r----- 1 oraprd dba 13596672 Sep 06 19:16 PRDarch1_55027_741174238.dbf
-rw-r----- 1 oraprd dba 13593088 Sep 06 19:19 PRDarch1_55028_741174238.dbf
-rw-r----- 1 oraprd dba 13593600 Sep 09 16:03 PRDarch1_53122_741174238.dbf
-rw-r----- 1 oraprd dba 13586432 Sep 09 16:03 PRDarch1_53123_741174238.dbf
-rw-r----- 1 oraprd dba 4837376 Sep 09 16:46 PRDarch1_53124_741174238.dbf
When i tried to execute the command brrestore -a ...
unbru10:oraprd 5> brrestore -a 54925-55028
BR0401I BRRESTORE 7.00 (32)
BR0405I Start of file restore: regtrbix.rsa 2011-09-13 14.06.43
BR0484I BRRESTORE log file: /oracle/PRD/sapbackup/regtrbix.rsa
BR0252E Function fopen() failed for '/oracle/PRD/saparch/archPRD.log' at location BraSlogRead-2
BR0253E errno 2: No such file or directory
BR0121E Processing of log file /oracle/PRD/saparch/archPRD.log failed
BR0406I End of file restore: regtrbix.rsa 2011-09-13 14.06.43
BR0280I BRRESTORE time stamp: 2011-09-13 14.06.43
BR0404I BRRESTORE terminated with errors
I checked in /oracle/PRD/saparch and the file archPRD.log doesn't exist. How do we recreate it?
Thanks,
Denis
Brazil -
RMAN: How to apply Archive Logs after recoverying of all physical files
Hi;
I am using RMAN Oracle10g; my test database has being corrupted. I have already taken 0 level backup through this command
run {
allocate channel c1 type disk;
backup incremental level 0 tag = Test_Weekly_database format 'O:\rman\backup\Full_Weekly_%d_%s_%p_%t'(database);
release channel c1;
configure controlfile autobackup format for device type disk to 'O:\rman\backup\Auto_Ctrl_weekly_%F';
allocate channel c1 type disk;
sql 'alter system archive log current';
BACKUP tag = Test_Weekly_Arch ARCHIVELOG UNTIL TIME 'SYSDATE-7' format 'O:\rman\backup\Archive_weekly_%d_%s_%p_%t';
DELETE ARCHIVELOG UNTIL TIME 'SYSDATE-7';
release channel c1;
After backing up I inserted few records in TEST123 table. And switch current log file.
Then my database has been corrupted. Now I have last 0 level backup (RMAN) and archive logs files on OS level.
I am recovering my database with the following commands; but archive logs have not being applied. And my inserted records were not presented in TEST123 table.
Kindly guide me
SQL> startup nomount
CMD> RMAN target=/
RMAN>set DBID 1168995671
RMAN>RUN {
SET CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO 'O:\rman\backup\Auto_Ctrl_weekly_%F';
RESTORE CONTROLFILE from autobackup;
RMAN> ALTER DATABASE MOUNT;
RMAN> RESTORE DATABASE CHECK READONLY;
RMAN> RECOVER DATABASE NOREDO;
RMAN> restore archivelog all;
SQL> startup mount
SQL> alter database backup controlfile to trace;
SQL> shut immediate
SQL> startup nomount
SQL> CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS ARCHIVELOG................;
SQL> alter database open resetlogs
---Database altered.
SQL> select * from TEST123;
Not record found
regards;
AsimDear Khurram;
Kindly advise where i m worrg???????
C:\>RMAN target=/
RMAN> set DBID 1168995671
executing command: SET DBID
RMAN> RUN {
2> SET CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO 'O:\rman\backup\Auto_Ctrl_weekly_%F';
3> RESTORE CONTROLFILE from autobackup;
4> }
executing command: SET CONTROLFILE AUTOBACKUP FORMAT
Starting restore at 27-DEC-07
using channel ORA_DISK_1
recovery area destination: O:\rman\backup
database name (or database unique name) used for search: ORCL
channel ORA_DISK_1: no autobackups found in the recovery area
channel ORA_DISK_1: looking for autobackup on day: 20071227
channel ORA_DISK_1: autobackup found: O:\rman\backup\Auto_Ctrl_weekly_c-11689956
71-20071227-04
channel ORA_DISK_1: control file restore from autobackup complete
output filename=D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\CONTROL01.CTL
output filename=D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\CONTROL02.CTL
output filename=D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\CONTROL03.CTL
Finished restore at 27-DEC-07
RMAN> ALTER DATABASE MOUNT;
database mounted
released channel: ORA_DISK_1
RMAN> RESTORE DATABASE CHECK READONLY;
Starting restore at 27-DEC-07
Starting implicit crosscheck backup at 27-DEC-07
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: sid=154 devtype=DISK
Crosschecked 9 objects
Finished implicit crosscheck backup at 27-DEC-07
Starting implicit crosscheck copy at 27-DEC-07
using channel ORA_DISK_1
using channel ORA_DISK_2
Finished implicit crosscheck copy at 27-DEC-07
searching for all files in the recovery area
cataloging files...
no files cataloged
using channel ORA_DISK_1
using channel ORA_DISK_2
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00001 to D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF
restoring datafile 00002 to D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF
restoring datafile 00003 to D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF
restoring datafile 00004 to D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF
restoring datafile 00005 to D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\TEST.DBF
restoring datafile 00006 to D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\TEST2
channel ORA_DISK_1: reading from backup piece O:\RMAN\BACKUP\FULL_WEEKLY_ORCL_3_
1_642420573
channel ORA_DISK_1: restored backup piece 1
piece handle=O:\RMAN\BACKUP\FULL_WEEKLY_ORCL_3_1_642420573 tag=Test_WEEKLY_DATAB
ASE
channel ORA_DISK_1: restore complete, elapsed time: 00:00:46
Finished restore at 27-DEC-07
RMAN> restore archivelog all;
archive log thread 1 sequence 1 is already on disk as file O:\ARCHIVE\ARC00001_0642356125.001
archive log thread 1 sequence 2 is already on disk as file O:\ARCHIVE\ARC00002_0642356125.001
archive log thread 1 sequence 3 is already on disk as file O:\ARCHIVE\ARC00003_0642356125.001
archive log thread 1 sequence 4 is already on disk as file O:\ARCHIVE\ARC00004_0642356125.001
archive log thread 1 sequence 5 is already on disk as file O:\ARCHIVE\ARC00005_0642356125.001
archive log thread 1 sequence 6 is already on disk as file O:\ARCHIVE\ARC00006_0642356125.001
archive log thread 1 sequence 7 is already on disk as file O:\ARCHIVE\ARC00007_0642356125.001
archive log thread 1 sequence 8 is already on disk as file O:\ARCHIVE\ARC00008_0642356125.001
archive log thread 1 sequence 9 is already on disk as file O:\ARCHIVE\ARC00009_0642356125.001
archive log thread 1 sequence 10 is already on disk as file O:\ARCHIVE\ARC00010_0642356125.001
archive log thread 1 sequence 11 is already on disk as file O:\ARCHIVE\ARC00011_0642356125.001
archive log thread 1 sequence 12 is already on disk as file O:\ARCHIVE\ARC00012_0642356125.001
channel ORA_DISK_1: starting archive log restore to default destination
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=15
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=16
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=17
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=18
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=19
channel ORA_DISK_1: restoring archive log
archive log thread=1 sequence=20
channel ORA_DISK_1: reading from backup piece O:\RMAN\BACKUP\ARCHIVE_WEEKLY_ORCL_5_1_642420630
channel ORA_DISK_1: restored backup piece 1
piece handle=O:\RMAN\BACKUP\ARCHIVE_WEEKLY_ORCL_5_1_642420630 tag=Test_WEEKLY_ARCH
channel ORA_DISK_1: restore complete, elapsed time: 00:00:08
Finished restore at 27-DEC-07
RMAN> ALTER DATABASE OPEN;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of alter db command at 12/27/2007 10:27:10
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF'
Regards;
Asim -
How to restore a table using RMAN with previous backup ?
Hi everyone,
we have to restore a table from 1 week previous backup using RMAN.
Could you show me how to restore a table using RMAN with previous full backup.
please Help me out.
Thanks
Info > oracle 10g, OS: AIX5LHi,
first of all you must have all the archivelogs since you want to recover your table from the previous backups.
anyways if you want to recover your table then you need to perform incomplete recovery to the point where you loss the table for that you need to restore and recover your database.you likely to loose all the transcation which occurs to the point where you you loose your table.
thanks.. -
Restore archive log which were not backed up
Hi experts,
as per understandings, after the creation of database the scn will starts from 1 and it grows sequentially,
1)i have not taken any backup until today.
2) i deleted all the archivelogs, but i have database alive
3) taken a full backup.
so i tried to restore from scn 100 to 200.
restore archivelog from scn 100 until scn 200;error:
RMAN-20242: specification does not match any archivelog in recovery cataloag
now my scn is 504575
is it possible to restore archive log from 100 scn to 200 scn?
Thanks & Best Regards.
appriciated for the right answers.784585 wrote:
Hi,
iam not using any STANDBY database..But earlier you said "see if any case accidently missed archives are deleted, those archives need to apply in standby, so what can we do?"
So of course people thought you were trying to sync up a standby ...
i want to generate all the archives from the scratch of the database..
my question is , database SCN will start from 1, so all the database has information from 1 to end...so why cant we take backup again as archives from database?This is pretty basic. You cannot recover from a backup you do not have. You've already said
1)i have not taken any backup until today.
2) i deleted all the archivelogs, but i have database aliveSo with no backup and no archive log, what would expect to recover from?
OK, here's how it works.
As changes are made to the database, a record of the change is written to a memory (not disk) structure called the "redo log buffer". When a transaction is committed the redo log buffer is written to the online redo log file. You must have a minimum of two online redo log files. This online redo log file is of fixed size. When it is full, the process of writing to it switched to the other (or next, if you have more than two). When an online redo log file is filled, and writing of redo info is switched to the next file, the filled file is copied to a NEW archived log file. After going through all the online redo logs in this round-robin fashion, it will come back to the first and start overwriting its previous contents. The archived log files are given unique names so that they are not over written but instead generate a constant stream of new archivelogs. It is these archive log files that contain all of your redo info that pre-dates the oldest info remaining in the online redo logs.
In a recovery operation, the following happens
first, the database files are restored from backup, starting with the newest full backup that meets your recovery needs, then following with all incremental backups after that. You said you have no backups prior to today.
Second, after the files are restored from backups (which you said you don't have) additional redo information is applied to get the changes since the most recent full or incremental backup that was restored. This additional info comes from the archivelog files, which you said you didn't back up and apparently you deleted.
So, you've said you have no database backup and no archivlogs either backed up or original. So from where do you expect to be able to recover this information? -
Deletion of archive log using RMAN Target in Oracle 10g
Hi All,
I recently have noticed that the archive logs have occupied 102 GBs out of the drive and I need to free up some space. When I tried to connect RMAN Catalog using
connect catalog user@dbI got error message as
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-06445: cannot connect to recovery catalog after NOCATALOG has been usedBut I was able to get through using
connect target user@dbMy Query is can I use
RMAN> delete noprompt expired archivelog all;as given in [how to delete archive log file |https://forums.oracle.com/forums/thread.jspa?threadID=2321257&start=0&tstart=0]
Or shall I take any other approach to delete the obsolete archive logs?
Regards,
*009*Hello;
I recently have noticed that the archive logs have occupied 102 GBs out of the drive and I need to free up some space. When I tried to connect RMAN Catalog using
connect catalog user@dbI got error message as
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-06445: cannot connect to recovery catalog after NOCATALOG has been usedBut I was able to get through using
connect target user@db
Are you trying to connect it through Grid control ? If connecting through a script, then please post its contents.
Make sure you are not connecting to the target database using "nocatalog".
rman target sys/<pwd_of_target>@<target_db> catalog <catalog_schema>/<catalog_schema_pwd>@<catalog_db>
My Query is can I use
RMAN> delete noprompt expired archivelog all;
as given in [how to delete archive log file |https://forums.oracle.com/forums/thread.jspa?threadID=2321257&start=0&tstart=0]
Or shall I take any other approach to delete the obsolete archive logs?
Regards,
*009*Are these archives backed up ? The above command only updates the RMAN repository if in case the archives were delete manually at OS level.
I would recommend you to backup these archives and then delete them.
RMAN>backup archivelog all not backedup 1 times delete input;If these archives are already backed up and have not been deleted from the disk, then you can use the below command
RMAN>delete force noprompt archivelog all completed before 'SYSDATE-n';where "n" is the number of days behind the current date. Make sure to verify if these archives have been backed up before deleting.
Regards,
Shivananda -
How to delete archive log files from ASM through Grid Control
Hi
Anybody suggest me how to delete archive log files from ASM through Grid Control.
ThanksIt is important to specify both, the oracle version and os version when posting, so confusions can be avoided.
In this particular case, since you are referring to asm and grid control you could be talking about either 10gR1, 10gR2 or 11gR1; but I strongly suggest you to avoid us to be guessing. In either case, you sould go to the maintenance tab of the target database and program a scheduled 'delete noprompt obsolete;' procedure. This will purge the information stored at the Flash recovery area, which I assume you have declared inside the ASM.
~ Madrid
http://hrivera99.blogspot.com/ -
How to delete archive log on standby site
hi
i configured dataguard on 10g. could anyone suggest how to delete archived log on standby site..Hi,
There is no automatic feature out-of-the-box but you have the following views:
1) Shows archive logs transfered:
select sequence#, first_time, next_time from v$archived_log order by sequence#;
2) Shows archive logs applied:
select sequence#, archived, applied from v$archived_log order by sequence#;
If you see your archivelogs applied you can safely remove archive log files from your disk. It is your decision if you keep or delete them completely. -
How can restore my ipad with my mac even though I first reset it with another computer
how can restore my ipad with my mac even though I first reset it with another computer
iPad: Basic troubleshooting
http://support.apple.com/kb/TS3274
Update and restore alert messages on iPhone, iPad, and iPod touch
http://www.buybuyla.com/tech/view/012953a0d412000e.shtml
iOS: Resolving update and restore alert messages
http://support.apple.com/kb/TS1275
iPad: Unable to update or restore
http://support.apple.com/kb/ht4097
iTunes: Specific update-and-restore error messages and advanced troubleshooting
http://support.apple.com/kb/TS3694
If you can't update or restore your iOS device
http://support.apple.com/kb/ht1808
Unable to restore from backup of a newer device
http://support.apple.com/kb/ts3682
Cheers, Tom -
Restoring archive log after cold backup
Hello forums users,
I read many thing on this topic but I didn't find the good answer.
I performed a cold backup each sunday.
My database is in ARCHIVE LOG mode.
Is it possible to restore ARCHIVE LOG files after restoring COLD backup?
Sunday : cold backup
Monday : new archive log have been created since cold backup
Tuesday : same as Monday
Wednesday : I would like to restore to Monday 22:00 for example
Can I restore cold backup + apply archive log until Monday 22:00 ?
Regards,
Guillaumerecover database using backup controlfile until cancel|time|logseq|scn
will do this and prompt you for the archivelogs.
Known as 'incomplete recovery'
Hth
Sybrand Bakker
Senior Oracle DBA -
How to restore iPhone 3gs with error code 1015 ??
How to restore iPhone 3gs with error code 1015 ??
The only advice we can give is to try and put it into DFU mode and restore. If that doesn't fix it, buy a new phone.
There is a reason that Jailbreaking isn't supported. You have just been kicked in the donkey by it. -
How to delete archived log file in rman
Hi friends,
I got a series list of archived log validation failed by crosscheck.
How can I delete these files to release space?
Thanks for help!
Jimmyuser589812 wrote:
Thanks for your help!
RMAN> report obsolete;
RMAN> DELETE OBSOLETE;
these twon way does not work. the fail backup is still in backup report by EM
How do I get a backup set number?
JIm
Edited by: user589812 on Nov 17, 2008 2:52 PMDELETE OBSOLETE deletes the backups that are no longer needed to meet the recovery policy.
DELETE EXPIRED deletes backups that are found (through a CROSSCHECK) to no longer exist - usually because the files were deleted outside of rman.
Documentation is at tahiti.oracle.com -
Hi,
in 10g R2 , my DB is backed up (all database, control files and Archived logs) every day. Now I need to restore the archived logs (from first of may to 15 of may) in a folder. How can I do that ?
Thank you.Ok , thank you.
I found this :
RMAN> RUN
SET ARCHIVELOG DESTINATION TO '/oracle/temp_restore';
RESTORE ARCHIVELOG ALL;
}here
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14194/rcmsynta051.htm#RCMRF149
but when executing I receive :
RMAN-06025 no backup of log thread 1 seq 6 scn 843036 found to restore
RMAN-06025....................................................................................................
RMAN-06025....................................................................................................
RMAN-06025....................................................................................................
RMAN-06025....................................................................................................What other option to use instead of ALL, to restore what is available ?
I know that there are the following options:
from, high, like, logseq, low, scn, sequence, time, untilbut do not know how to determine which option with which value to chose ?
For
restore archivelog FROM sequence 23 until sequence 99 ;how can I determine the available sequence in backup ?
Thank you.
Edited by: user522961 on May 21, 2009 8:53 AM
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