Archive logs and recovering database with no RMAN

Hello,
I inherited a database with no RMAN backup activated but archive redo logs are activated and generating at every moment.
As there is no rman backup I always thought that those archive redo logs were useless and because of reduced disk space, regularly I delete all of them.
Then I read that archive redo logs can be usefull even if there is no RMAN. Archive redo logs can be used in a recovery situation like this:
set all tablespaces in backup mode
alter tablespace tsp1..tsp100 begin backup;
copy all datafiles
alter tablespace tsp1..tsp100 end backup;
alter database create standby controlfile as 'c:\temp\sbytemp.ctl';
copy of archivelogs from start begin backup time till nowAs I delete my archive logs, I don't have all ones from the first time. My question is:
How many archive redo log files would I need to have? Would I need to have all archive logs that were generated from the first time? Or would be enough to have the last three or four ones?
Thanks
Edited by: user521219 on 21-may-2012 7:50

How many archive redo log files would I need to have?
Would I need to have all archive logs that were generated from the first time?
would be enough to have the last three or four ones?You need all archive redo log from the moment you have started taking full backup.
If you take full backup every night at 1:00 AM, you will need all archive redo logs that have transactions finished at and after 1:00 AM.

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Missing archived logs when recovering database

Scenario is
1-10 archived logs required to recover database.
5 Number log is missing
It means that 6,7,8,9,10 are useless for me
yes/no Please explain it to me
Thanks a Lot

Hi,
Yes all archivelog after the missing sequence of archivelog will be useless for recovery.
in ur case 6,7,8,9,10 are useless for you.
So only incomplete recovery is the solution.
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Recover database with arc-file

Hi,
my database was in the archive-log and then we had a dataimport and the database crashed, because there was not enough space.
So i brought the database now to the mount status and i want to recover my database.
I take this:
recover database using BACKUP CONTROLFILE
and then it proposed me an archive-file but i must take an other one.
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Thanks in advance.
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And why on Earth are you throwing "using backup controlfile" in there?
ARE you using a backed up copy of your controlfile? No. You haven't mentioned restoring an old copy of the controlfile at all. So if you haven't restored one from backup, why in Heaven's name are you telling Oracle that the control file is out of date? Because that's what that recovery command does.
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Hi all,
I am working on oracle 10g EE(10.2.0.4).I am having a very difficult database switchover case in my hand.
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How can i use standby database as primary for that 72 hour.As archive log apply is manually done and parameters are being changed,can i switch over these two?
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http://docs.oracle.com/cd/B19306_01/server.102/b14239/manage_ps.htm#i1017111
The above case applicable if you ready to loose, But it doesnt make sense. But in your case this doesnt work. Because once you start use of Standby as primary, there would be live/production data, which you need very much.
So there is lot of work to do.
You have to rebuild standby database and then switchover back to same location. So its a little trip work.
Have you enabled Dataguard Broker ?
Edited by: CKPT on Mar 13, 2012 1:43 PM

Recover database with missing archivelog...

Oracle10gR2 RHEL 4
Hi,
I am having a problem. I'm trying to recover my database to an previous point in time but the archive logs that I need were accidentally removed. Is there anyway I can restore it to a previous point in time? None of the SCN's are working no matter how far I go back (note: I can created the database lastweek so it can't go further than that).
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using channel ORA_DISK_1
starting media recovery
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RMAN-00571: ===========================================================
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Starting recover at 14-APR-08
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 04/14/2008 16:12:40
RMAN-06556: datafile 1 must be restored from backup older than scn 153330712
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Starting recover at 14-APR-08
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 04/14/2008 16:15:01
RMAN-06556: datafile 1 must be restored from backup older than scn 153266607

Ok, I am trying that but I get the following error:
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Starting recover at 17-APR-08
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 04/17/2008 13:33:00
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Thanks

Multiplexing Online redo logs, archive logs, and control files.

Currently I am only multiplexing my control files and online redo logs, My archive logs are only going to the FRA and then being backed up to tape.
We have to replace disks that hold the FRA data. HP says there is a chance we will have to rebuild the FRA.
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Can archive log backup influence database performance?

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can archive log backup generally influence the database performance? I mean: users can view their query to go slowly during backup of archived redolog?

Are you asking about backing up the archived redo logs via rman or directly to tape or the actual archive process where Oracle backs the online redo to disk?
-- comments on archive process
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HTH -- Mark D Powell --

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Hello,
First of all, my setup is:
Microsoft Windows Server 2003
Oracle database 10g Rel. 2
Peopletools 8.49
HRMS 9.0
I am trying to boot the application server, but the operation fails with the error message:
PSAPPSRV.5796 (0) [08/27/09 10:29:41](1) GenMessageBox(0, 0, M): Database Signon: Invalid user ID or password for database signon. (id=PS)
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Features Settings
========== ==========
1) Pub/Sub Servers : No 15) DBNAME :[hrdmo]
2) Quick Server : No 16) DBTYPE :[ORACLE]
3) Query Servers : No 17) UserId :[PS]
4) Jolt : Yes 18) UserPswd :[PS]
5) Jolt Relay : No 19) DomainID :[TESTSERV]
6) WSL : Yes 20) AddToPATH :[C:\oracle\product\10.2.0\database\bin]
7) PC Debugger : No 21) ConnectID :[people]
8) Event Notification: Yes 22) ConnectPswd:[peop1e]
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11) Analytic Servers : Yes 25) JSL Port :[9000]
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PSWATCHSRV.5480 (0) [08/27/09 10:29:38] Checking process status every 120 seconds
PSWATCHSRV.5480 (0) [08/27/09 10:29:38] Server started
PSAPPSRV.5796 (0) [08/27/09 10:29:40](0) PeopleTools Release 8.49 (WinX86) starting
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RV_2\
PSAPPSRV.5796 (0) [08/27/09 10:29:41](1) GenMessageBox(0, 0, M): Database Signon: Invalid user ID or password for databa
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PSAPPSRV.5796 (0) [08/27/09 10:29:41](0) Server failed to start
PSWATCHSRV.5480 (0) [08/27/09 10:29:42] Shutting down
PSADMIN.2336 (0) [08/27/09 10:29:48](0) End boot attempt on domain hrdmo
As I said, despite the error message, I am able to log on to the database with sqlplus with user PS password PS.
Could someone please help me with this problem? Thanks.

I installed the database with the setup program and come to think of it, I don't think you can specify whether to create a system or demo database. So I probably didn't install a demo, which is what I wanted. I also ran the SQRs and everything showed the database was correct, so I thought I did it right.
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In any case, thanks for all you help Nicolas.

Can I have a primary database and standby database with a different windows version?

Hi
I need your help.
We need to increase the memory in the server where is the standby database , but first, we need to upgrade the windows version.
The actual version is windows 2003 standard edition 64 bits
The new version will be windows 2003 enterprise edition 64 bits
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The databases are in SQL SERVER 2005.
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This difference in windows version between primary and standby servers can cause a problem in the synchronization between primary
and standby databases ??<o:p></o:p>
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hi,
i am trying to create a standby database for a a test scenario using oracle 10g R2 and windows xp
Primary DB = primary
standby DB=stby
iam able to ping databases from each other using tnsping , but iam not able to transfer archive logs from primary to standby
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primary.__java_pool_size=4194304
primary.__large_pool_size=4194304
primary.__shared_pool_size=88080384
primary.__streams_pool_size=0
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*.background_dump_dest='C:\oracle\product\10.2.0/admin/primary/bdump'
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*.db_file_multiblock_read_count=16
*.db_name='primary'
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*.job_queue_processes=10
*.log_archive_dest_2='SERVICE=stby'
*.log_archive_dest_state_2=ENABLE
*.open_cursors=300
*.pga_aggregate_target=16777216
*.processes=150
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*.sga_target=167772160
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*.undo_tablespace='UNDOTBS1'
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log_archive_dest_1='LOCATION=C:\oracle\product\10.2.0\db_1\database\archive'
log_archive_dest_state_1=ENABLE
LOG_ARCHIVE_CONFIG='DG_CONFIG=(primary,stby)'
pfile from standby
primary.__db_cache_size=75497472
primary.__java_pool_size=4194304
primary.__large_pool_size=4194304
primary.__shared_pool_size=79691776
primary.__streams_pool_size=0
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*.background_dump_dest='C:\oracle\product\10.2.0\admin\bdump'
*.compatible='10.2.0.1.0'
*.control_files='C:\oracle\product\10.2.0\oradata\stby.ctl'
*.core_dump_dest='C:\oracle\product\10.2.0\admin\cdump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='primary'
db_unique_name='stby'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=primaryXDB)'
*.job_queue_processes=10
*.open_cursors=300
*.pga_aggregate_target=16777216
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=167772160
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='C:\oracle\product\10.2.0\admin\udump'
standby_archive_dest='C:\oracle\product\10.2.0\stbyarch'
db_file_name_convert='C:\oracle\product\10.2.0\oradata\primary','C:\oracle\product\10.2.0\oradata'
log_file_name_convert='C:\oracle\product\10.2.0\oradata\primary','C:\oracle\product\10.2.0\oradata'
standby_file_management=AUTO

You do not point to the standby database from your primary, in order to get the archivelogs transfered. You need to set at least the parameter LOG_ARCHIVE_DEST_2 like this:
SQL>alter system set LOG_ARCHIVE_DEST_2='SERVICE=stdby VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=stdby';stdby has to be resolved by the tnsnames.ora on the primary server. Have a look here:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/create_ps.htm#i67520
That explains all you need to do to create a physical standby briefly.
Kind regards
Uwe
http://uhesse.wordpress.com

To clear db2 archive log after db2 database backup

After db2 backup archive log remains as it is.is there setting to remove archive logs after database backup.DAS is not installed.
DB2 9.1 FP 6
os HP unix

Hello Anand,
If the archvied logs are not required, ie they are not required for restore
you can remove them.
You can check this is by running
db2 list history all for db <sid>
The above command will give you a detailed overview of the backup
history and what logs were archived and what logs were included or needed for restore of backups.
If they are no longer needed for a restore, then it is safe to remove them.
Kind regards,
Paul

Archive logs and recovering database with no RMAN

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