Backups check in no archivelog mode -Question

I am trying to figure either DB is backedup or not, I checked its logfiles, it did'n shutdown from last one month, and running in no-archivelog mode.....I can assume its not being backed up from last month , make me right if i am not...........
I have been assigned to apply Oct2007 CPU on this server, & want to take backups first, any suggestions?

if i have export backup, will i be able to do
recovery of db is something goes wrong while cpus
applying with import.........Export are not backups but still popularly used as backups. Yes, if you have the latest export you will be able to get back your database to that point. Make sure you take FULL database export.
I would suggest you to bring down the database and take a cold backup.

Similar Messages

Backup in ARCHIVELOG Mode

Dear Sirs,
Actually I've a non archivelog mode RDBMS, but I wan't to make a
hot backup. Could I make a hot backup after I turn the
ARCHIVELOG mode ON, then turn it off again after Back - Up ?
And how do I make the hot backup ?
Thank you for the attention and help.
Regards,
Tonny

You could turn archivelog mode on, do the backup, and then turn
archivelog mode off. This really defeats the purpose of hot
backups though. You would have to know the SCN, archivelog
file, or time to do a point-in-time recovery manually, or if you
are using RMAN knowing the time will help. I think RMAN will
recover until the last archivelog if you don't specify a time or
SCN. Keep in mind that you will lose all the changes since the
last backup if you turn archivelog mode off after the backup and
your database crashes inbetween the next scheduled backup. If
you are going through the trouble for turning archivelog mode on
and then off I would perform a cold backup. You have to
shutdown the database with normal or immediate, mount the
database, turn archvelog mode on/off and then open the
database. So why not just do a cold backup?

Database in Archivelog mode

Hi
All,
I have oracle 9.2.0.6 at my workplace.right now my database running in ARCHIVELOG MODE. I want to set it to NOARCHIVELOG MODE.
can I do on the fly? in other way, Do I need to shutdown and restart database?
Any help will be appreciated.
Thanks,
Vishal

Hi,
Issue the following commands to put a database into NOARCHVELOG mode:
1) Take Back up of Present SPfile by creating pfile
create pfile from present spfile.
2) Shutdown the database by SUTDOWN IMMEDIATE.
3) Take Cold backup of the database.
4) Change the parameter in the pfile.
log_archive_start = FALSE
#log_archive_dest_1 = 'LOCATION='Your location'
log_archive_dest_state_1 = DISABLE
#log_archive_format = %d_%t_%s.arc
5) And make a spfile from the modified pfile in default location .
6) Start the database with spfile.
SQL> CONNECT sys AS SYSDBA
SQL> STARTUP MOUNT ;
SQL> ALTER DATABASE ARCHIVELOG;
SQL> ARCHIVE LOG START;
SQL> ALTER DATABASE OPEN;
NOTE 1: Remember to take a baseline database backup right after disabling archivelog mode. Without it one would not be able to recover.
Regards
Jafar

RMAN backup in no archivelog mode

what are possible ways to backup the database which is in no archivelog mode using RMAN
regards,
Sakthivel
Edited by: SAKTHIVEL on Jul 22, 2011 1:02 AM

Hi;
Please check:
backup in noarchivelog mode using RMAN
backup in noarchivelog mode using RMAN
Regard
Helios

Archivelog mode - online backup

i'm trying to do an online backup in archivelog mode (user managed backup)
1. for that i've put the db in backup mode by
sql> alter database begin backup
2.copied the datafiles to the backup location in o.s
using cp command
3.tried to copy controlfile to the o.s location using
sql>alter database backup controlfile to '/u01/oracle/product/10.2.0/hotbk'
Here i get an error: ORA-01580: error creating control backup file
and ORA-27038: created file already exists .
I've checked if the control file already exists in the location but there's no controlfile there.
Please help in regards to this error!
Thanks!

This is wrong path for backup try as
alter database backup controlfile to '/u01/oracle/product/10.2.0/hotbk/control.bk'

ARCHIVELOG mode needless for offline (cold) backups ?

When I read some tutorials or comments about backup with rman or expdb I saw often the recommendation to put database in ARCHIVELOG mode.
But this is from my point of view useless when I do such a backups in offline mode.
I want to backup the current state of the database - full stop.
Redo logs from ARCHIVELOG are not necessary. Only if I want to go further back from the current state back to the past they are of use.
Am I right?
Peter

Data pump does not require or use archivelog mode for importing, or exporting.
The archivelog mode is required, however, for RMAN backups, except for full database copy which it copies while the database is shutdown.
The Data Pump utility uses a parameter called FLASHBACK_SCN (and FLASHBACK_TIME) which reads the undo data, but not to be confused with archivelogs.
NOTE that if you set archivelog mode on, you may want to either turn off archivelog mode when importing, or set the tabelspaces to nologging (then back to logging when done). Otherwise, it may cause enough archive logs during import to fill up your file system.
Re: http://www.oracle.com/technology/products/manageability/database/pdf/ow06/Motorola_datapump.pdf
Hope this helps.
ji li

Rman backup with no archivelog mode

Hi Friend,
I did this backup many times before, to backup a test db which is not in archivelog mode.
My procedure are the following:
$ rman target /
rman> run {
shutdown immediate;
startup mount;
backup format '/u02/RMAN/%d_LVL0_%T_%u_s%s_p%p' database;
delete obsolete;
But strange I got now error:
ORA-19602: cannot backup or copy active file in NOARCHIVELOG mode
Thanks a lot

Hi,
Paste the snap shot of what you actually doing and what error messages are coming. That will help to analyze the problem.
This basically happens when your shutdown is not normal or clean.
One way is to again startup the database and then issue shutdown Normal.
Regards,
Edited by: Navneet on Sep 30, 2008 3:21 AM

Why archivelog mode is mandatory for hot backups.

Hi,
Why the database should be put in archivelog mode when we take hot backups. What happens actually. Why can't we put in noarchivelog mode and take hot backups?

Suppose you are not using RMAN then you must put your tablespaces in backup mode. Otherwise the backup you can take will be unrecoverable.
In order to recover from a Hot Backup you have to do followings
- Restore your Hot Backup
- Recover the database - here, the archive log files are important
How does Oracle know what has to be recovered from archivelogs?It looks at the SCN.
If you never put your tablespaces in backup mode then SCN would not be frozen and Oracle wouldn't know what has to be recovered.
Talip Hakan Ozturk
http://taliphakanozturken.wordpress.com/

No archivelog mode backups

I am curious if anyone knows of any software out there that can backup a database that is in no archivelog mode while it is running?
I don't want to do this....but I am curious to see if there is any that I have not heard of for a writeup I am doing.
Regards
Tim Boles

Hello,
I've never heard about it.
RMAN which is (on my point of view) the best tool to Backup Oracle database needs to set the database
in mount state for Cold Backup.
Else, about mirror or "business copy", they cannot manage dirty blocks in the buffer. They just manage
the files on the disk but, while a database is open the datafiles have no reason to be consistent.
We make clone with Business Copy (HP) for our Backup and we need to have the database in archivelog mode
and the Tablespaces in Backup mode.
Best regards,
Jean-Valentin

Would you use scripts to take database out of archivelog mode?

Background: we do not use RMAN for this production database and we do cold backups each night.
I've been asked to take one of our databases out of archivelog mode for a few days and then to put it back into archivelog mode.
Being somewhat neurotic about these things - I've only ever done it manually - so that I can make sure nothing goes wrong and to check that there was a last successful cold backup prior to the switch.
However, management have asked that it be done automatically by scripts after the backup.
Whilst I can create a script that will do this - the question I'd like to ask the forum is - have you and would you?

I do not agree with taking any Oracle database out of archivelog mode and I do not approve of management's decision and have told them why and all the risks they run.
This is not a test database - it IS a production database and other users do make changes daily.
What I did not reveal until now is that I have also been asked to take this database out of archivelog mode for 5 days and suspend all cold back-ups for the whole server (with 3 other instances on the server - also impacted) - and have warned them accordingly.
However, management have been swayed by someone who feels they know better - who claims to be a qualified Oracle DBA - I'm OCP but seems to have little sway since this person has convinced management that my 6 years experience and qualification is less than his application experience in GIS.
They want to run an upload which will take around 5 days to do - I'm somewhat miffed that an upload can take that length of time and question whether a GIS system should need such an upload for such a length of time.
Let's no go into the problem with tablespaces and space within the tablespaces - the upload will fail because they do not understand that if the tablespace fills up - the upload will fail - but despite asking - I've been told that there is no problem - there will be a problem - since I refuse to allow autoextend on this database - because of the potential to run out of disk space.
I've explained until I'm blue in the face - never mind that even if the upload is successful - the cold backup tape won't be able to backup the data because it'll be potentially over the limit.
I've even warned of my past experience x 3 - when a RAID controller failed - literally died in front of my eyes - I just happened to be standing next to one of the servers talking to someone - and the whole server was lost - but because we had the archivelogs - and the previous day's backup - we got it up and running after Dell replaced the RAID controller - within 1 hour.
That's the joy of Oracle - nothing is lost other than the last archivelog - depending on the time you set the switch.
I love this system - it's so recoverable - it such a joy to work with.
But then when I get told to suspend cold backups and then at the same time suspend archivelog mode - I go mad.
Don't get me started - I've gone down the usual path of why hire an OCP when you won't listen to what I say, etc.
Management are demanding I switch it automatically out of archivelog mode etc.
I can do it - but my question is still - have you guys?
And why did you do it?
All I can say is that I hope that the server has a RAID contoller failure and finally they listen to me - the chances of that are minimal - so management are saying - do it or else.
Oh and by the way - the GIS team have asked for this to be bi-monthly - automated.
And have said that:
"You can not rollback or recover the loading process using the log files because it involves a far more complex operation that would most likely not be successful."
Nice phrase that to an OCP.
I welcome your comments - as I really am in a hole here.
Thanks.

Backup and Recovery in different mode

We have a database in noarchivelog mode.
Currently we convert it to archivelog mode before monthly full database RMAN backup.
And after backup,we again back it to noarchivelog mode.
Now my question is that, in case of failure can we recover this database(any how) with that backup?
Please advice and if possible give the recovery steps.
Thanks & Regards
Quazi Abdur Rab

Hi,
It's not good to switch from Archive Log Mode and No Archive Log Mode as your wish.
See, As Khurram had explained you the thing. Point in time recovery before crash is quite not possible but only last the restore point applicable for your DB. Rest of the things can be recovered. Why are the implications you are facing if the DB is in Archive Mode. ?? I Suggest do peform and maintain Archive Log which is good for your DB.
- Pavan Kumar N

Archivelog mode during upgrade

HI All,
During upgrading the database from 10g to 11g... I will put my database from noarchivelog mode to archivelog mode to save the disk space.
Does this task improves or speedsup the process of upgradation or any impact.
Suggestions please.
regards,
TEJAS

when DB is archivelog mode and you put DB in startup upgrade mode.. and execute catupgrd.sql script it starts updating dictionary objects and generates archivelogs ..
Hence i put the DB in noarchive log mode..
Any performance impact by putting the upgrade process in noarchivelog mode in terms of time duration the backup is performed.No performance impact, But recommended to put in Archivelog mode, even though if you have good backup.
Also apart from this thread, have a question, The catupgrd.sql script execution duration depends upon the data disctionary contents right not on the DB size ? i am having this question. plz answer.The upgrade script creates and alters certain data dictionary tables. It also upgrades or installs the following database components in the new Oracle Database 11g Release 2 (11.2) database:
Source:-
Answer is here in detail.. http://docs.oracle.com/cd/E11882_01/server.112/e10819/upgrade.htm#sthref184

Archivelog mode during Database upgrade

I have database that needs to be upgraded (from 8.1.7 to 10.2.0.4) and this database runs in ARCHIVELOG MODE. My question should I turn archivelog mode off during upgrade? Do you see any benefits or issues with that?

Better option to put database in no archivelog mode. Take a backup and then put database in noarchivelog mode.
Log_archive_format will be different in 10g so while enable you may need to change this parameter.

Archivelog mode Configuration

Hi
I am using Oracle10g , and OS is Windows XP. i had tried to enable it to archive mode by using the following
SQL> SELECT LOG_MODE FROM SYS.V$DATABASE;
LOG_MODE
NOARCHIVELOG
Then by adding the following lines in the Pfile
$ORACLE_HOME/admin/SID/pfile. I'll add the following lines to the end of the file:
# Archive Log Destinations -benr(10/15/04)
log_archive_dest_1='location=/u02/oradata/cuddle/archive'
log_archive_start=TRUE
startup the database in mount mode and put it in archivelog mode
SQL> startup mount
SQL> alter database archivelog;
Database altered.
SQL> alter database open;
Database altered.
SQL> select log_mode from v$database;
LOG_MODE
ARCHIVELOG
when i log in to the db, i only can log in as sys user.when log in as sys user i got this error :
"ORA-00257: archiver error. Connect internal only,until freed."
What's the possible problem? And how to solve it?
Regards,
[email protected]

hi surya,
i think your are not using your pfile during startup, and the changes you have made to your pfile does not take effect.
the parameter log_archive_start=TRUE is no longer supported in 10g.you should get a notification of parameter deprecated during startup.
you issued the command : startup , so your pfile is not being used.
you should issue : archive log list to see your archive destination
if it is default, it should be db_recovery_file_dest
next issue show parameter db_recovery_file_dest
check the space availability of the directory by issuing df -h, df -k
you can manually removed your old archive log but after you need to perform crosscheck from rman.
best practise is to do it using rman during your scheduled backup.
br,
mrak

Archivelog mode features

Hello,
Can I get a complete list of the tasks which can not be performed in noarchive log mode ? I mean in which tasks / features in different Oracle versions i.e. enterprise/standard and version numbers 10.2.0.1 to 11.2.0.1; db must be in archivelog mode.
i.e.
I can not do in noarchive log mode :
1.standby db
2.tablespace in begin backup mode
3.tablespace PITR
4.rman catalog
Can you add more please? or please correct above list ?
One more last question :
From which Oracle Version, Oracle introduced archive log mode.
Thank you.

I would like to add below tasks/features :
ALTER DATABASE DATAFILE '/u02/oracle/rbdb1/stuff01.dbf' OFFLINE;
The database must be in ARCHIVELOG mode if you are creating a guaranteed restore point.
Oracle Error: ORA-01239 : Database must be in ARCHIVELOG mode to use external cache
For LogMiner the database must be in archivelog mode with supplemental logging enabled.
To use RMAN recover ... block command, because RMAN need the archivelog to perfom block recovery.
Asynchronous Distributed Change Data Capture (CDC) requires archivelogs.
Hot cloning.
@ Sybrand :
Thank you Sybrand for the historical information.
Regards
Girish Sharma

Backups check in no archivelog mode -Question

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