Backup & Recovery :: Change Archive Log Mode During DB Running?
Aug 24, 2011
changing archive mode during DB running.Before in 9.2, 'ALTER SYSTEM ARCHIVE LOG START/STOP' is available for this job. But, after 10g/11g, it cause 'archive log stop has been deprecated'.
However, for my practice, I need to estimate archived logs size before backup them, so I need to stop archive log for a while and enable it later during DB running.
I check Oracle documents, it only mentions changing archive log mode at DB mounted but not open.
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Jan 11, 2013
I want to change my archive log destination currently my database its in archive mode and this archive log detail as under
SQL> archive log list
Database log mode Archive Mode
Automatic archival Enabled
Archive destination F:archivelogs
[Code]...
this my f drive space is full so i want to change this my archive destination to my another g drive so how can i do this.and if i change this my archive destination does its affect any problem while recover my database in future.
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May 28, 2008
I need to make my database to ARCHIVELOG mode when i try it it gives below following error
SQL> alter database archivelog;
alter database archivelog
*
ERROR at line 1:
ORA-00265: instance recovery required, cannot set ARCHIVELOG mode
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May 24, 2012
I have a scenario like while taking the hot backup i forgot put end backup mode,at the same time one of user u1 updating some lacks of recordsinto the T1 table.at some time he wants rollback.and my redolog file size is very less.is it possible to rollback? if yes how?
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May 30, 2012
How can be identify a particular archive-log file have backup or not from rman catalog?
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May 9, 2011
if I could execute the 'ALTER DATABASE BEGIN/END BACKUP' while in NOARCHIVELOG MODE.
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Nov 8, 2008
Is there any way I can get all the archive log files present in a backup piece. I tried following but it always gives me all the log files for each piece:
****
SQL> select s.set_stamp, s.set_count, s.PIECES, s.backup_type,
s.controlfile_included from v$backup_set s, v$backup_piece p where
s.set_stamp=p.set_stamp and s.set_count=p.set_count and
p.handle='5mjv4do0_1_1';
[code]....
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Feb 15, 2011
Actually, i have test database open in read only and i want to apply archive files carry from production database at daily level.
When i'm going for recovery, since database is already in consistent state, it is not asking for recovery.
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Jan 11, 2008
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> }
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Jun 1, 2012
There is a archive log backupset,and the backup set contains many archive log file,and now i want extract to a directory,how can i do?
BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
3 86.20M DISK 00:00:21 02-JUN-12
BP Key: 3 Status: AVAILABLE Compressed: NO Tag: TAG20120602T113622
Piece Name: /u02/rman_bak/20120602/archive_log_t784899382_s4_p1
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Aug 4, 2011
I have one question to clarify regarding backup.
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?
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Aug 9, 2013
We have a 9.2.8.0 database in archive log mode. We want to restore that db to a specified point in time. What is the fastest way to do it ?
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Jun 6, 2012
after backup a full database ,the archive log need to keep all the time ?
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Jun 9, 2012
The log_archive_format parameter is set to %t_%s_%r.dbf,but the archive log is generate as o1_mf_1_10_7x6lby27_.arc, why?
SQL> show parameters log_archive_format;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_format string %t_%s_%r.dbf
[oracle@hxl 2012_06_09]$ ls -lr
total 93468
-rw-r----- 1 oracle oinstall 51229184 Jun 9 10:00 o1_mf_1_9_7x5ckqbv_.arc
-rw-r----- 1 oracle oinstall 43131392 Jun 9 09:01 o1_mf_1_8_7x581vgo_.arc
-rw-r----- 1 oracle oinstall 74240 Jun 9 21:06 o1_mf_1_11_7x6lksyp_.arc
-rw-r----- 1 oracle oinstall 1131008 Jun 9 21:02 o1_mf_1_10_7x6lby27_.arc
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Aug 18, 2011
I need to restore few archivelog from one of stage database to refresh dev database.
Stage database got refreshd before try to restore the arch files.
Now stage database does not contain arch sequence information.
I tried to restore arch fiels from tape using catalog connection. Is there any way to restore
channel c1: sid=521 devtype=SBT_TAPE
channel c1: Veritas NetBackup for Oracle - Release 6.5 (2007071006)
Starting restore at 18-AUG-11
released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 08/18/2011 09:20:21
RMAN-06004: ORACLE error from recovery catalog database:
RMAN-20242: specification does not match any archive log in the recovery catalog
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Feb 1, 2012
When we see archive log destination is full , in that case how to backup archive log files using RMAN ?
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Jan 30, 2012
Today we have taken a backup of the Live database, due to some issue, it got deleted before applying into the Disaster Recovery Location.
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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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Jul 29, 2011
create Oracle archived log to network drive instead of Local drive.
Is there anyway that i can get my archive log created on network drive instead of local drive.
As we want to save our storage space and want to keep archivelog on network.
Is there a way that if Archive log creation on Network drives falis, Oracle create Archivelog on Local drive.
We are running Data warehouse and on daily basis we have 22 to 25 Gig of Archive log created
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Oct 24, 2011
Is there any view in oracle 9i like V$RECOVERY_FILE_DEST where we can check the archive destination space utilization from database end ?
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Oct 7, 2012
We have a nightly rman backup that was complete and clean.The backup contains a Data File, Control File and a backup Archive Log file.The database server crashed with all the subsequent archive logs lost.
We are trying to recover from the three backup files.We are bumping into the backup piece missing as all the archive logs are done. how to restore with the exising backup files. the lost archive logs are probably salvageable.
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Oct 9, 2012
We are using OCI call library to connect to Oracle database through one application. When we try to run this application through valgrind( a memory leak detection tool for linux) then, OCIServerAttach() call is failing to connect to db and it says that "ORA-1034 :Oracle not available"," Oracle instance may be down", etc. However, our oracle instance is running and database is open. When we run our application normally ( not through the tool) then everything is working fine.
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Apr 3, 2013
SELECT filename, status, bytes
FROM v$block_change_tracking;
DISABLED
If we turn on block_change_tracking with RMAN, will it require a downtime?
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Dec 17, 2012
I have a RUN file within a script to duplicate a database. As part of this RUN file I also run the command configure controlfile autobackup off; as part of this RUN file. However, this command has turned off backup of the control file on the AUXILLARY database (i.e. production) as well as the TARGET database (test). Is this supposed to happen?
My run file is:
rman TARGET sys/XXXX@${DB}-SOURCE AUXILIARY /
RUN {
allocate AUXILIARY channel a1 type disk;
allocate AUXILIARY channel a2 type disk;
allocate AUXILIARY channel a3 type disk;
allocate AUXILIARY channel a4 type disk;
[Code]....
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Aug 3, 2011
rdbms:oracle 10gr2
os:windows
with reference to
[URL]......
Quote:
A.2.2 Writing Backup Scripts for Disk and Tape Scenarios
As in the disk-only scenarios, the backup scripts in this section are categorized based on database workload. as stated very clearly it depends on the workload, more precisely the rate of block change. The size of the database can be found out based on formula from
[URL]....
so how would I know the rate of block change in order to know which script is suitable for me? I try to find out the rate of block change for the database based on change tracking file but based on
[URL].....
Quote:
The size of the change tracking file is proportional to the size of the database and the number of enabled threads of redo. The size is not related to the frequency of updates to the database. So how do I determine the rate of change? can the rate of block change based on size of archive logs?
I have the following information with me:
starting from 5/10/2011 0101
ending 5/18/2011 1114
this constitute to 9.5 days
F:
ecover_area>dir/w
1644 File(s) 27,942,770,176 bytes
2 Dir(s) 10,019,270,656 bytes free
average size of each file 27,942,770,176/1644
=16996818.841849148418491484184915
average size of each day's log = 27,942,770,176/9.5
=2941344229.0526315789473684210526
about 3G
If I have a database size of 92G, based on the archive log size of about 3G per day, can I conclude that a change of 3G/92G is considered as few block change?
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Sep 10, 2011
does, block change tracking file is read during incremental level 0 backup?
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Jun 20, 2012
i want to enable block change tracking as our incremental level1 backup take a lot of time but i have a worry which i found it on oracle support and tha is as follows Database Instance Hang at Database Checkpoint With Block Change Tracking Enabled. [ID 1326886.1]
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Oct 11, 2011
i did such commands
1. RMAN -> backup incremental level 0 database;
2. SQLPLUS -> alter database enable block change tracking using file '/home/oracle/block_change_tracking.tr';
3. RMAN -> backup incremental level 1 cumulative database;
4. RMAN -> backup incremental level 1 cumulative database;
5. RMAN -> backup incremental level 1 cumulative database;
and for such order i noticed that block change tracking file wasn't used for any cumulative backup. for each cumulative backup was done full scan over database.
it was used after i did incremental level 0 backup, and again incremental 1 cumulative.
if i want this feature to be usefull i should enable it before my incremental level 0, or i should do incremental level 0 immediately after i enable it?
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Jun 8, 2012
I am using Oracle Database 10.2 in No Archive Log Mode. what auditing options are available in No Archive Log mode ?
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May 6, 2013
resolving the below issue.
environment:
DB version:11.2.0.3.0
OS : IBM/AIX RISC System/6000
backup tool : Symantec net backup.
When I start RMAN backup through Symantec net backup tool same is failing. when I see in log file below error message is recorded in the same.
################################################################################
Starting backup at 06-MAY-13
channel ch00: starting compressed incremental level 0 datafile backup set
channel ch00: specifying datafile(s) in backup set
RMAN-03009: failure of backup command on ch00 channel at 05/06/2013 07:09:16
[Code]....
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ch00 channel at 05/06/2013 07:09:16
ORA-19602: cannot backup or copy active file in NOARCHIVELOG mode
RMAN> RMAN>
Recovery Manager complete.
####################################################################################
But, DB is up and operating fine with ARCHIVELOG mode at that movement not even restart also.
how to resolve.
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