Do we need archivelog is we are using rman?

Hi,
I am confused about rnan and archivelog. If we have our database registered with rman with a recovery catalog database, then surely we do not need to have archivelog on, do we?
Thanks.

A quick high-level overview:
When you change some piece of information in a table (i.e. you change the salary of an employee from 100 to 200), that change is written to the redo logs.
The redo logs are then archived by the archiver process. At that point, they are known as archive [redo] logs. These logs are necessary in order to recover a
database to a particular point in time.
When you back up your database (whether you use RMAN or something else), the archive redo logs need to be backed up.
When RMAN does your database backup, it needs to record things like which files were backed up at what point in time and the name of the corresponding backup piece. It can either do that by writing that information to the control file or, preferrably, by writing that information to the recovery catalog.
The recovery catalog, therefore, has no idea that the salary of an employee changed from 100 to 200 at a particular SCN. Instead, it knows that the archived redo log X was backed up at time Y into backup piece Z. If you needed to recover that change in the future, RMAN would read backup piece Z, extract redo log X, and apply the log to the database. The archived redo log would store the information that the salary changed from 100 to 200.
Justin

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I need customer references who are using Oracle Files

Dear All,
I'm looking for customer references who are using Oracle IFS or OCM or Oracle Files for their document management systems. So, if anyone can support me i appreciate.

Please see:
http://www.oracle.com/customers/index.html?collabsuite.html
-sancho

NEED TO RECOVER A DATABASE USING RMAN with CONTROL FILE AND NO RMAN CATALOG, DISK FAILURE..

Hello All,
The disk failure caused our production data on the disk to be resotred with the backup data available and recovered through RMAN with cotrolfile , and no catalog DB is configured.
I had the restored the spfile and control file then recovered the database,
startup nomount;
RESTORE SPFILE FROM ' path ' ;
Shutdown immediate;
startup nomount
Restore controfile from autobackup;
restore database;
[AT POINT , A MESSAGE PROMPTED LIKE " failur of restored command - some targets not found" (thinking may be few archives are not found, i proceeded to incomeplete recovery of DB) ]
recover database;
Finished reocvery .
Now in the Grid control i see that 60 blocks of a particular datafile are corrupted and needs recovery. Do i need to get the data file resotred again and recover it or any simple way to recover this data file
When i perform the block recovery , it says recovery failed and when i run the data file recovery it succeeds. Please provide you inputs to recover the database as it is production BI database and pretty critical to our client.
Thanks for your valuable time in advance.
Regards,
Ran G.

These is a common problem if the object are created due to NOLOGGIN option. If you check most of the object which are facing block corruption is indexes .
Use the below query to check the objects :
It will map each block from v$database_block_corruption to either a segment or if the block is free.
$ sqlplus / as sysdba
set pagesize 2000
set linesize 250
SELECT e.owner, e.segment_type, e.segment_name, e.partition_name, c.file#
, greatest(e.block_id, c.block#) corr_start_block#
, least(e.block_id+e.blocks-1, c.block#+c.blocks-1) corr_end_block#
, least(e.block_id+e.blocks-1, c.block#+c.blocks-1)
- greatest(e.block_id, c.block#) + 1 blocks_corrupted
, null description
FROM dba_extents e, v$database_block_corruption c
WHERE e.file_id = c.file#
AND e.block_id <= c.block# + c.blocks - 1
AND e.block_id + e.blocks - 1 >= c.block#
UNION
SELECT s.owner, s.segment_type, s.segment_name, s.partition_name, c.file#
, header_block corr_start_block#
, header_block corr_end_block#
, 1 blocks_corrupted
, 'Segment Header' description
FROM dba_segments s, v$database_block_corruption c
WHERE s.header_file = c.file#
AND s.header_block between c.block# and c.block# + c.blocks - 1
UNION
SELECT null owner, null segment_type, null segment_name, null partition_name, c.file#
, greatest(f.block_id, c.block#) corr_start_block#
, least(f.block_id+f.blocks-1, c.block#+c.blocks-1) corr_end_block#
, least(f.block_id+f.blocks-1, c.block#+c.blocks-1)
- greatest(f.block_id, c.block#) + 1 blocks_corrupted
, 'Free Block' description
FROM dba_free_space f, v$database_block_corruption c
WHERE f.file_id = c.file#
AND f.block_id <= c.block# + c.blocks - 1
AND f.block_id + f.blocks - 1 >= c.block#
order by file#, corr_start_block#;
Below oracle support note will help you :
ORA-1578 / ORA-26040 Corrupt blocks by NOLOGGING - Error explanation and solution (Doc ID 794505.1)
The Gains and Pains of Nologging Operations (Doc ID 290161.1)
SQL> select d.NAME as DBF_NAME, t.NAME as TS_NAME, d.UNRECOVERABLE_CHANGE# as NOLOG_CHNG#, to_char(d.UNRECOVERABLE_TIME, 'Dy DD-Mon-YYYY HH24:MI:SS') as NOLOG_TIME from V$DATAFILE d join V$TABLESPACE t on d.TS# = t.TS# order by t.NAME;
Thanks,
gssdba.wordpress.com

Need help with Backup Recovery using Rman - Point in Time.

Hi all,
I am trying to recover my database to a certain point in time. Here are the details below.
Oracle database version is. 11G R1. on 2 Node RAC. OS is AIX.
Database name is Sales.
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After doing this, i dropped the entire database. So now everything is clean.
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But i have taken a whole backup.. which also includes the controlfiles + archivefiles.
Please guide.. with proper steps and commands.

Hi,
Priror to start with restore and recovery - Try to restore the control file from backups "/backup/sales/rman/"
Then further you can mount the db and further carry on with recovery (catalog the backups prior to recovery)
- Pavan Kumar N

How to restore a single instance database to RAC (10g) using RMAN ?

Hi all,
I have a single instance database configured using file system in a unique server, so now I need to restore this database using RMAN to a new RAC environment with two nodes and ASM also.
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Wander(Brazil)

Wander(Brazil) wrote:
Hi all,
I have a single instance database configured using file system in a unique server, so now I need to restore this database using RMAN to a new RAC environment with two nodes and ASM also.
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To restore backup on different host using RMAN

Hi All,
Friend I need your help once again. I want to restore my database from the past backup to new HOST by keeping the original database intact using RMAN. Let me explain the scenario:-
Databas Version - 8.1.7
OS - Solaris 5.8
We are using RMAN with Tivoli as third party media management. I just need to restore the database from this tape library using RMAN with recovery catalog on new server. The only doubt I have is how I will make the backups of the production database whose backup has to be restored available on the new host where I have to create new database.
I will be using different file structure for the newly restored database. Do I have to create TDPO files seperately on the server on which I have to restore the database.
Please reply asap.
Regards
Harpreet Singh

You need to create a tdpo.opt file of source on the destination database. Then, allocate channel using this TDPO_OPTFILE and recover database.

RMAN Restore using RMAN COLD Backup!!

Hi All,
I Need to restore a database using rman cold backup taken a month back.
Can i use Duplicate database option until time/scn just like we do for hotbackup or is there any other procedure for cloning/refreshing the database using RMAN COLD BACKUP of source.
Thanks & Regards,
Pdev

This may be used to clone db
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connect catalog rman/rman@<dba>
connect auxiliary sys/sys<new>
run {
set newname for datafile 1 to 'e:\oracle\oradata\giri\system01.dbf';
set newname for datafile 2 to 'e:\oracle\oradata\giri\undotbs01.dbf';
set newname for datafile 3 to 'e:\oracle\oradata\giri\users01.dbf';
set newname for datafile 4 to 'e:\oracle\oradata\giri\indx01.dbf';
set newname for datafile 5 to 'e:\oracle\oradata\giri\example01.dbf';
allocate auxiliary channel dupdb1 type disk;
set until sequence 2 thread 1;
duplicate target database to dupdb
logfile
GROUP 1 ('e:\oracle\oradata\giri\redo01.log') SIZE 100k REUSE,
GROUP 2 ('e:\oracle\oradata\giri\redo02.log') SIZE 100k REUSE;
Message was edited by:
Girishh

Issue with opening a site in SharePoint Designer 2010 -The version of SharePoint foundation running on the server is more recent than the version of SPD you are using, you need a more recent version of SPD.

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Please update us SharePoint version
Regards,
Pratik Vyas | SharePoint Consultant |
http://sharepointpratik.blogspot.com
Posting is provided AS IS with no warranties, and confers no rights
Please remember to click Mark As Answer if a post solves your problem or
Vote As Helpful if it was useful.

My assistant and I are using two Lightrooms (i.e. two serial numbers) and need to share between our two computers. I provide originals to her onto a flash drive. She tags them and returns them to me. I then copy the photos from her flash drive onto my com

My assistant and I are using two Lightrooms (i.e. two serial numbers) and need to share between our two computers. I provide originals to her onto a flash drive. She tags them and returns them to me. I then copy the photos from her flash drive onto my computer and load them in my LR. The photos appear but witthout any editing or tagging. We need to be able to have her working on the photos on her computer with her copy of LR and me on my computer with my version of LR being able to access what is already tagged and given back to me. This seems hard. We need advice on if it is at all possible to have two computers simultaneously working on LR . I bought her her own version because I was told at the time of purchasing that that was the only way to share. Please advise urgently! Thanks.

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We have 30 ipads at our school and it is great. We are about 850 student on my school and everyone are using the ipads. One hour at the time. (we have a booking system.) I teach music and are using Garageband. I need to find away were my students that

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Dan,
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Send a GarageBand song to iTunes:
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Need to find out how many users are using Siebel Application

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yasun

Hi,
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http://docs.oracle.com/cd/B40099_02/books/SysDiag/SysDiagSysMonitor17.html
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Add-on release notes 2.16.1
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Sorry to bump up an old thred.
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Do we need archivelog is we are using rman?

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