Enable the archivelog mode?

Hi,
I've tuned on the archive log mode already. However, the value of "log_archive_start" is FALSE. After than I edit init.ora change it to TRUE and shutdown DB, startup mount and then alter database open. But the value of "log_archive_start" still "FALSE". What I have done wrong? And what is consequence if the value "FALSE"?

Hmm, looks like an issue. I hope you followed the steps mentioned below to enable archiving.
1. Shutdown db
2. Edit init.ora and set log_archive_start=TRUE
3. Startup mount pfile=init.ora
4. ALTER DATABASE ARCHIVELOG;
5. ALTER DATABASE OPEN
The "ALTER SYSTEM ARCHIVE LOG START;" command will also start the archiving without having to re-start the db. However the archiving will not persists on restarting the db. Hence the 5-steps mentioned above is the way to go.
Which method did you follow ? Also are you using spfile? In that case you have to enable log_archive_start in spfile using the following command
alter system set log_archive_start=true scope=spfile
Execute the following command in order to test whether archiving is happening or not :-
SQL>archive log all;

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After enabling the archivelog, DB control is not launching, please help

I am using oracle 11G
after enabling the archivelog, DB control is not launching, please help

553ad454-5ce9-4515-bc7c-51c2e7fa3316 wrote:
Thanks for your reply.
I have enabled the Archivelog MODE for my database through DB control.
after some time, DB control https://192.168.1.100:1158/em/console stops working & not opening.
But I can able to loginto the sqlplus through command mode.
please help
Since you have used an IP in the EM's URL, there can be one more possibility besides this that the EM service has been stopped(as suggested by others already) . It may be a reason that EM service is not up because the IP address has been changed due to a machine reboot. As 9/10 times, the IP addresses are assigned via DHCP on home laptops and desktops, if this IP address is no longer there, the EM service won't be up. But before we shall come to know about this that whether this is indeed the reason, try the command-emctl status dbconsole and if it says, not running EM, emctl start dbconsole. Post the output of the commands.
HTH
Aman....

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Enable archivelog mode while datbase is open

Hi everybody
Kindly I need to ask if possible to enable archivelog mode while database in open status for oracle 11g? and if yes .. what is the statment?
Thanks in advance
Edited by: user11254543 on Jun 8, 2011 11:51 PM

You cant enable the archivelog mode when the database is in nomount state because the archive log information is kept in Control file like db in archivelog mode or not,log sequence number,SCNs,logfiles members,etc.. When we start the database in nomount state then only the pfile/spfile is read and sga is allocated and background processes are started but no controlfile is read ..to read the controlfile the database must be started in mount state..Why we require a controlfile is because it stores critical information about the database...If we start the database in mount state then it recognizes whether database is in archivelog mode or not , If it is in archivelog mode then it sees whether an instance recovery is needed or not by verifying the log sequence numbers in controlfile,redologfile & the datafile ..If an instance recovery is required then it performs the instance recovery by calling smon background process or if a datafile header is not up to date then we have to perform the media recovery using the redo logfiles...
For open state you have to post the reply..it will help you to explore yourself...Good Luck!

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HI,
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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

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?

Alter database into Archivelog mode.

HI Team,
I am using ORACLE 9i.
I want to convert database into archivelog mode from noarchivelog mode.
Using the following SQL Commands I can able to convert my database into the Archivelog.
SQL> connect sys as sysdba
Enter password: *****************
Connected.
SQL> alter database archivelog;
alter database archivelog
ERROR at line 1:
ORA-01126: database must be mounted EXCLUSIVE and not open for this operation
SQL> startup mount;
ORA-01081: cannot start already-running ORACLE - shut it down first
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 252779340 bytes
Fixed Size 453452 bytes
Variable Size 125829120 bytes
Database Buffers 125829120 bytes
Redo Buffers 667648 bytes
Database mounted.
SQL> alter database archivelog;
Database altered.
My problem is that I had to shutdown the database before converting it in to the archivelog mode...
Is there any way that without shuting down the database i can switch to archivelog mode.
Please comments...
Shatrughan

if we shutdown immediate one's database..do
it's listener terminated too???The database registration with the listener yes, the listener itself no. That is, if you execute a command like "lsnrctl stat" you won't see the database anymore, but the listener is still active. Example :
[ora102 ~ db102]$ lsnrctl stat
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 05-MAY-2007 18:57:51
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date                05-MAY-2007 18:27:34
Uptime                    0 days 0 hr. 30 min. 16 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/ora102/OraHome1/network/admin/listener.ora
Listener Log File         /home/ora102/OraHome1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "db102" has 1 instance(s).
Instance "db102", status READY, has 2 handler(s) for this service...
The command completed successfully
[ora102 ~ db102]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Sat May 5 18:58:03 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SYS@db102 SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SYS@db102 SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
[ora102 ~ db102]$ lsnrctl stat
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 05-MAY-2007 18:58:33
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date                05-MAY-2007 18:27:34
Uptime                    0 days 0 hr. 30 min. 58 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/ora102/OraHome1/network/admin/listener.ora
Listener Log File         /home/ora102/OraHome1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[ora102 ~ db102]$

Set Archivelog Mode

How can I turn on/off the Archivelog Mode for a database by using the OEM, (say, I launched the OEM at http://My_Machine:1158/oem, after I log on where I go next)?
Thanks to help.
Scott

Thanks for the response.
Now I am on the Recovery Settings page:
1) Under Media Recovery, I checked ARCHIVELOG Mode*
2) For the Log Archive Filename Format*, it carries the entry of: ARC%S_%R.%T, what should I replace %S, %R, abd %T with? --Could you give an example?
3)Under Number Archive Log Destination Quota (512B) Status Type, there are 10 lines for entries, so I filled with the following:
1 C:\Oracle\product\archivelog1_dir
2 C:\Oracle\product\archivelog2_dir
3 C:\Oracle\product\archivelog3_dir
9
10 USE_DB_RECOVERY_FILE_DEST n/a VALID Local
Quesion:
3.1) Is the (format of ) the above entry :"C:\Oracle\product\archivelogx_dir" --Correct? Note: archivelogx_dir is the sub-directory name, not the file name.
3.2) It looks like the Quota for each destination is (512B) (byte?). If so, generally, how many such (512 Byte) do I need? I mean on average. And why does it restrict to 512 Byte for each destination?
3.3) Assume I'll use up ALL the 10 (lines) of destinations above, if I understand it correctly, the total and maximum of the archivelog file is 10 x 512 Bytes -- Is this correct?
3.4) What should I do about Line #10 above, which carries the entries of:
USE_DB_RECOVERY_FILE_DEST under Archive Log Destination
n/a under Quota
VALID under Status
Local under Type
--I mean, should I replaced with a C:\Oracle\product\archivelogx_dir? or delete it? or else? What is this Line's default entry for?
4) If arvhice log file ARC%S_%R.%T is specified, will this same file be spread into multiple destination (directories)?
Thanks to help.
Scott

Set Archivelog Mode in OEM

How can I turn on/off the Archivelog Mode for a database by using the OEM, (say, I launched the OEM at http://My_Machine:1158/oem, after I log on where I go next)?
Thanks to help.
Scott

Thanks for the response.
Now I am on the Recovery Settings page:
1) Under Media Recovery, I checked ARCHIVELOG Mode*
2) For the Log Archive Filename Format*, it says: ARC%S_%R.%T, what should I replace with? --Could you give an example?
3)Under Number Archive Log Destination Quota (512B) Status Type, thre are 10 lines, i.e.: so I filled with
1 C:\Oracle\product\archivelog1
2 C:\Oracle\product\archivelog2
3 C:\Oracle\product\archivelog3
9
10 USE_DB_RECOVERY_FILE_DEST n/a VALID Local
Quesion:
3.1) Is the (format of ) the above entry :"C:\Oracle\product\archivelog1" --Correct?
3.2) It looks like the Quota for each destination is (512B) (byte?). If so, generally, how many such (512 Byte) do I need? I mean on average. And why does it restrict to 512 Byte for each destination?
3.3) If use up ALL the 10 (lines) of destinations above, if I understand it correctly, the total and maximum of the archivelog file is 10 x 512 Bytes -- Is this correct?
3.4) What should I do about Line #10 above, which carries:
USE_DB_RECOVERY_FILE_DEST under Archive Log Destination
n/a under Quota
[b]VALID under Status
Local under Type
Thanks to help.
Scott
Message was edited by:
scottjhn

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How to enable/disable archive mode from the pfile in oracle 10g?

hi
I am using oracle 10g.
Is there any mechanism to / parameter to enable or disable archive log mode?
can I enable arching directly from pfile without touching the startup process??
pls help.
thnx in advance..

Please is not in pfile that you enable/disable archive log mode.
For ENABLE Archivelog mode:
shutdown immediate
startup mount
alter database archivelog;
alter database open;
For DISABLE Archivelog mode:
shutdown immediate
startup mount
alter database noarchivelog;
alter database open;

Unable to enable archivelog mode and flashback mode

Hi,
I have oracle10g installed on Linux machine.
Everytime i try to enable ARCHIVELOG mode and FLASHBACK through the DB EM console and during the restart of the database, the database just startup and gets mounted, but does not get open. and not able to get the database to archive log mode.
and when i startup the database through the sqlplus i get this following error:
ORA-32004: obsolete and/or deprecated parameter(s) specified
i am not able to enable successfully archive log mode and flashback mode.
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Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 13585
Current log sequence 13587
so i was thinking maybe it is the archive log start sequence that is creating error.
because long back i had the database in archive log mode and because the archive log files got filled up, i disabled the archive mode and had to delete the archive log files.
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Thanks in advance,
Philip.

Hi,
yes i looked in to the init.ora file and i got this
orcl.__db_cache_size=1308622848
orcl.__java_pool_size=167772160
orcl.__large_pool_size=16777216
orcl.__shared_pool_size=167772160
orcl.__streams_pool_size=16777216
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*.background_dump_dest='/home/oracle/oracle/admin/orcl/bdump'
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*.db_recovery_file_dest_size=64424509440
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.java_pool_size=159383552
*.job_queue_processes=10
*.open_cursors=300
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*.processes=150
*.log_archive_start=FALSE
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=1687158784
*.shared_pool_size=157286400
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='/home/oracle/oracle/admin/orcl/udump'
and there is a
*.log_archive_start=false
so do i have to delete it?
Thanks,
Philip.

Enable the archivelog mode?

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