How to recover a database with archive log

how to recover database with archivle log

Hi,
With in information no one can tell the answer.
Kindly post your qusetion in details information, you want to recover the database in archive log mode, what type of error you get, bcoz depending up on the errors you recover your database,
please mention all about your database
cheers
Senthil Kumar

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How to recover the database when some of the archive log file get deleted.

I am facing a problem with Oracle database, which is related to archivelogs.
Our development database is running in archivelog mode, but we don't have backups scheduled and have no recovery catalog.
When the database was in running condition, disk got full, so some archivelogs were deleted manually.
After this they restarted the DB, and now DB is not coming up. Errors are as follows:
SQL> startup
ORACLE instance started.
Total System Global Area 1444383504 bytes
Fixed Size 731920 bytes
Variable Size 486539264 bytes
Database Buffers 956301312 bytes
Redo Buffers 811008 bytes
Database mounted.
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: '/export/home/oracle/dev/ADVFRW/ADVFRW.system'
SQL> recover datafile '/export/home/oracle/dev/ADVFRW/ADVFRW.system'
ORA-00283: recovery session canceled due to errors
ORA-01610: recovery using the BACKUP CONTROLFILE option must be done
SQL> recover database using backup controlfile;
ORA-00279: change 215548705 generated at 09/02/2008 17:06:10 needed for thread
1
ORA-00289: suggestion :
/export/home/oracle/dev/ADVFRW/ADVFRW.archivelog1/LOG_ADVFRW_1107_1.ARC
ORA-00280: change 215548705 for thread 1 is in sequence #1107
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
/export/home/oracle/dev/ADVFRW/ADVFRW.archivelog1/LOG_ADVFRW_1107_1.ARC
ORA-00308: cannot open archived log
'/export/home/oracle/dev/ADVFRW/ADVFRW.archivelog1/LOG_ADVFRW_1107_1.ARC'
ORA-27037: unable to obtain file status
SVR4 Error: 2: No such file or directory
Additional information: 3
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
CANCEL
Media recovery cancelled.
SQL>
1. How to recover the database and bring it online
Any help will be highly appreciated.
With Regards
Hemant Joshi
Edited by: hem_Kec on Sep 7, 2008 9:07 AM

Hi,
Archive log files are the copies of redolog files.As redo log files are circularly overwritten,oracle generates archive log file of the corresponding redo logfiles being overwritten.So if you have a backup that dates back to 10 am in the morning and if your database creashed at 3 pm,you cannot use the redo log files alone as they have incomplete information.To completely recover the database upto 3 pm,you need archive log files generated between 10 am to 3 pm. In your case since you are missing one archive log file,you cannot perform complete recovery and hence would suffer data loss.

How to recover my database after lose some archivelogs?

How to recover my database after lose some archivelogs?
What should I do next?
When I make a point-in-time recovery, I get the following message:
Oracle Error:
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: '/u01/app/oracle/oradata/rcatalog/system01.dbf'
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 09/25/2008 16:41:19
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of log thread 1 seq 17 lowscn 798237 found to restore
RMAN-06025: no backup of log thread 1 seq 16 lowscn 796977 found to restore
RMAN-06025: no backup of log thread 1 seq 15 lowscn 781378 found to restore
RMAN-06025: no backup of log thread 1 seq 14 lowscn 759019 found to restore
RMAN-06025: no backup of log thread 1 seq 13 lowscn 709039 found to restore
RMAN-06025: no backup of log thread 1 seq 12 lowscn 708479 found to restore
RMAN-06025: no backup of log thread 1 seq 11 lowscn 676234 found to restore
RMAN-06025: no backup of log thread 1 seq 10 lowscn 646686 found to restore
RMAN-06025: no backup of log thread 1 seq 9 lowscn 645207 found to restore
RMAN-06025: no backup of log thread 1 seq 8 lowscn 645199 found to restore
RMAN-06025: no backup of log thread 1 seq 7 lowscn 595363 found to restore
RMAN-06025: no backup of log thread 1 seq 6 lowscn 557197 found to restore
RMAN-06025: no backup of log thread 1 seq 5 lowscn 519102 found to restore
RMAN-06025: no backup of log thread 1 seq 4 lowscn 519053 found to restore
RMAN-06025: no backup of log thread 1 seq 3 lowscn 492824 found to restore
RMAN-06025: no backup of log thread 1 seq 2 lowscn 476888 found to restore

Mixing thread
yours recovery asking a lot of archivelog ,you are in the situation now like you are in no archive mode recovery..which requires last cold backup.
What you can do is restore yours old backup with its old controlfile and then recover till before that miissing log by using recover database using backup controlfile.
Khurram

How i recover my database

Dear All
My database crash but luckly i have logical and phsical backup of my data base and i try my level best but i did not get good result, so plz let me know, how i recover my database(Oracle 10g, OS:window xp), means even i attach my tablespaces also
thsnks in advance
Regards,

10g means what? Please provide a full and complete version number.
What do you mean by logical and physical backup ... be very specific and clear. For example don't say "export" indicate whether it was made with exp or datapump and how you were logged on and the parameters used when it was created.
What do you mean by "crash." Again be very specific and clear.
We can do more harm by guessing your situation whereas we can help if we know what actually happened.

I'm debutante in oracle 10g how to create a database with picture?

I'm debutante in oracle 10g how to create a database with picture? help please

d7401ec1-d4d6-4e54-9eb4-2181ac367d0c wrote:
I'm debutante in oracle 10g how to create a database with picture? help please
Oracle 10g is obsolete. Oracle 11g is already at terminal release.
Have you installed the Oracle rdbms software?
Installing Oracle and Building the Database
If you are going to be a professional DBA, you need to learn to
1) read the documentation
2) wean yourself from dependence on pictures and GUIs.
3) read the documentation
=================================================
Learning how to look things up in the documentation is time well spent investing in your career. To that end, you should drop everything else you are doing and do the following:
Go to docs.oracle.com.
Locate the link for your Oracle product and version, and click on it.
You are now at the entire documentation set for your selected Oracle product and version.
BOOKMARK THAT LOCATION
Spend a few minutes just getting familiar with what is available here. Take special note of the "books" and "search" tabs. Under the "books" tab (for 10.x) or the "Master Book List" link (for 11.x) you will find the complete documentation library.
Spend a few minutes just getting familiar with what kind of documentation is available there by simply browsing the titles under the "Books" tab.
Open the Reference Manual and spend a few minutes looking through the table of contents to get familiar with what kind of information is available there.
Do the same with the SQL Reference Manual.
Do the same with the Utilities manual.
You don't have to read the above in depth. They are reference manuals. Just get familiar with what is there to be referenced. Ninety percent of the questions asked on this forum can be answered in less than 5 minutes by simply searching one of the above manuals.
Then set yourself a plan to dig deeper.
- *Read a chapter a day from the Concepts Manual*.
- Take a look in your alert log. One of the first things listed at startup is the initialization parms with non-default values. Read up on each one of them (listed in your alert log) in the Reference Manual.
- Take a look at your listener.ora, tnsnames.ora, and sqlnet.ora files. Go to the Network Administrators manual and read up on everything you see in those files.
- *When you have finished reading the Concepts Manual, do it again*.
Give a man a fish and he eats for a day. Teach a man to fish and he eats for a lifetime.
=================================

Sync database using archive log files

Hi,
I am having two databases A nd B. A is the live Database. I need to replicate the A database and its name as B. I had done the replication using hotbackup.
1. create the B database
2. then take the hotbackup and copy the files to the B database
3. Then delete the controlfile, logfiles and datafiles then paste the files from A database.
4. Recreate the control files in B database
5. Now the B database is up and running.
But my question is in A database is still live and its generating archive log files. I would like to know how to sync the B Database similar to A database using archive log files.
Kindly share me an example..
Rgds..

As you have renamed and opened the clone database, it is no longer the same DBID / Database Incarnation as the source. As you point out, it is not a standby database.
You cannot apply archivelogs from the source database to this clone.
You have to consider [Oracle Streams|http://download.oracle.com/docs/cd/B19306_01/server.102/b14229/toc.htm] to implement data replication.
Hemant K Chitale
Edited by: Hemant K Chitale on Jan 5, 2010 3:34 PM

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How to control too much of archived log generation

Hi ,
This is one of the interview questions,
I have replied to this. Just like to know what is answer of this.
How we can control the excessive archived log generation ?
Thanks,

796843 wrote:
Hi ,
This is one of the interview questions,
I have replied to this. Just like to know what is answer of this.
How we can control the excessive archived log generation ?
Thanks,do not do any DML, since only DML generates REDO

Switching database to archive log mode

1.When I switch the database to archive log mode,
I have to do full offline(consistent) backup.
2.When the database is working in archive log mode
I can do inconsistent(online) backups.
Why is there consistent backup needed after swiching
to archive log mode, is there not inconsistent backup
enough after switching (the databease operates
in archive log mode and as in point 2 I can make inconsistent backups).

Hello,
Oracle recommands to do offline backup after switching to archivelog as an immediate crash-recovery procedure. Look at the following example:
1/ You switch your base to archivelog.
2/ Work is started right away.
3/ Your DB crashes => You got your archived redo logs, but none of the other files.
Now, let's put a
1b/ Backup (offline) your database.
Now, in 3, youg got everything you need to restore the base, because 3 can happen WHILE your are ONLINE Backing up the base.
That's the point.
Regards,
Yoann.

For streams , database in Archive log mode or non archive log mode?

Hello ,
I have a basic question,
To set up oracle streams, what should be the the database mode (archive log or non archive log mode)?
Thanks in advance,
Raj

It needs to be in archive log mode..thts the place frm where it captures the necessary information....
Kapil

Recover database from archive log: Time based recovery

Hi,
Could you pelase help regarding the following:
I have power outage in my machine running oracle 9i on Solaris OS 9
Oracle is mounted but failed to open
Once it is started showing the error message
SQL> startup;
ORACLE instance started.
Total System Global Area 9457089744 bytes
Fixed Size 744656 bytes
Variable Size 3154116608 bytes
Database Buffers 6291456000 bytes
Redo Buffers 10772480 bytes
Database mounted.
ORA-01113: file 4 needs media recovery
ORA-01110: data file 4: '/opt/oracle/oradata/sysdb/indx/indx01.dbf'
So I tried to recover the database
SQL> recover database;
ORA-00279: change 1652948240 generated at 12/03/2007 13:09:08 needed for thread
1
ORA-00289: suggestion : /opt/oracle/oradata/nobilldb/archive/1_183942.dbf
ORA-00280: change 1652948240 for thread 1 is in sequence #183942
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
ORA-00279: change 1652948816 generated at 12/03/2007 13:09:19 needed for thread
1
ORA-00289: suggestion : /opt/oracle/oradata/nobilldb/archive/1_183943.dbf
ORA-00280: change 1652948816 for thread 1 is in sequence #183943
ORA-00278: log file '/opt/oracle/oradata/nobilldb/archive/1_183942.dbf' no
longer needed for this recovery
The power outage at 16:00pm and the recovery archive log file '/opt/oracle/oradata/nobilldb/archive/1_183942.dbf' at 11 am
Always I am applying the next sequence it is giving the same message and asking the next sequence. I have more than 900 archive log from 11am to 4pm and each of them having the size of 100mb and it take 1 minute to get back from each to provide this error message.
How I can start my recovery from say 15:45 onwards until 16:15?
I have all archive logs in the proper destination.
Still my database is not opened and it is starts applying archive log since 5 hours back, please help me regarding this
Thanks in advance

Wrong forum. Post your question in the following forum:
General Database Discussions

How to calculate storage space for archive log files and database backups?

Hi all,
I have a 1.8 terabyte Oracle 9i database and need to plan for how much additional disk space I will need to perform nightly backups and for archivelog files. Is there a script or formula available that can help me estimate how much required disk space I will need to hold a days worth of archived logs as well as a nightly export dump file and a full hot RMAN backup on disk?
Thanks!

I'm not sure how to estimate the size of your backups, especially if you use incrementals. However, the space required for archive logs will be equal to the amount of REDO your DB generates. I would count the number of log switches per day with a query like the following:
select trunc(first_time), count(*)
from v$log_history
group by trunc(first_time)
I would then take the average and multiply this count by the size of your redo log files (assuming they are all the same size).

Redo log files are deleted, how to recover the database

Hi All,
I removed the redo01.log, redo02.log and redo03.log files of our Oracle database. And it caused the db to fail. Is there any way I can recover the database and startup database in normal mode? I do not need it to have all the latest data restored, I will be happy to just start the db and get going.
database is in arcive log mode.
Thanks

Hello,
You may try this if the database is mounted:
recover database until cancel;
cancel
alter database open resetlogs;Hope it can help.
Best regards,
Jean-Valentin

How to recover a database with archive log

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