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How to enable archive log mode in Oracle

Entdecke die Mode Auswahl bei ASOS. Kostenloser Versand nach Deutschland! Starte in die neue Saison mit ASOS. Entdecke neue Styles für deinen Kleiderschrank There are 2 types of logging mode in oracle database. 1. Archivelog mode. In this mode, after the online redo logs are filled , it will move to archive location. 2. Noarchivelog mode. In this mode, filled online redo logs wont be archives, instead they will be overwritten. Enable archive log mode How to Enable/Disable ARCHIVELOG Mode in Oracle 11g/12c. May 26, 2018 Santosh Tiwary. The following are the steps required to disable archive log mode on an Oracle 10g/11g or 12c database. Verify the database log mode. [oracle@orahow ~]$ sqlplus / as sysdba. SQL*Plus: Release 11.2.0.4.0 Production on Sat Feb 03 04:05:02 2015. Enabling archive mode is simple, just connect to your database in mounted but closed mode (start up mount) and alter the database. But if you don't tune a little you'll run into problems down the road, so lets specify some parameters too. Namely, consider LOG_ARCHIVE_DEST. SQL > shutdown immediate; Database closed. Database dismounted. ORACLE. ARCHIVE LOG MODE must be enabled to perform the above operations. There are some situations in the database that must be considered before enabling archivelog mode. These are as follows; The size of the disk on which our Archive Logs will be stored should be determined and disk space allocated accordingly

SQL> SELECT log_mode FROM v$database; If the result of this statement comes out as ARCHIVELOG then that means we have successfully enabled the ARCHIVELOG mode in our Oracle Database. That is how we enable ARCHIVELOG mode in Oracle Database 12c, 18c, 19c and later versions. Hope you enjoyed this read How to Enable Archive Log Mode in Oracle 19c. If you want to enable archive log mode in your Oracle database because you want to backup your database while it's opened, then you should follow these simple steps. Be aware that you'll need to restart your database. So here we go This is a quick post about the steps required to enable the ARCHIVELOG mode for an oracle database (Single Instance or RAC) To check if the archive log mode is enabled or not, use the following command: SYS@XPS 01-SEP-18 SQL> archive log list Database log mode No Archive Mode Disable Archive Log Mode. Note: It is recommended to perform a backup of the database (after a shutdown normal or immediate) prior to changing the archive status of a database. The following are the steps required to disable archive log mode on an Oracle 10g or 11g database. Verify the database log mode

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Check Archive Mode or No archive Mode exist in current database: SQL> archive log list Database log mode No Archive Mode Automatic archival Disabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 2 Current log sequence 4 SQL> exit Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production. Running a Database in ARCHIVELOG Mode. When you run a database in ARCHIVELOG mode, you enable the archiving of the redo log. The database control file indicates that a group of filled redo log files cannot be reused by LGWR until the group is archived

Use alter database archivelog to enable archiving. For container database CDB and PDB archiving need to be configure at CDB level. Either you can use FRA DB_RECOVERY_FILE_DEST or log_archive_dest_1 parameter to set archive destination. In above all command Use sid='*' only for RAC database Archive logs are utilized by RMAN, Data Guard, Flashback and many others. If your going to enable archivelog mode on a real database thats important to you, I would recommend shutting down the database and doing a cold backup just in case. Keeping a final noarchivelog mode backup seems to be a good and excepted practice. Enabling archive mode. TO ENABLE ARCHIVE MODE: - We can check the archive log mode enable or not by using these queries SQL> select log_mode from V$database; LOG_MODE ------------ NOARCHIVELOG - Other wise we can use this command als How to enable Archivelog mode in Oracle database 11g Mode of Logging. There are two types of logging modes in Oracle database :-ARCHIVELOG :- In this type of logging whatever oracle writes in a redo log file related to transactions in database, saved to another location after a log file has been filled Enable NOARCHIVELOG Mode. As for reverting ARCHIVELOG Mode, the steps of procedure are the same except that we change log mode to NOARCHIVELOG at mount state. SQL> alter database noarchivelog; Database altered. Let's check archive log status. SQL> archive log list; Database log mode No Archive Mode Automatic archival Disable

To enable archiving of redo log files: Connect Oracle Recovery Manager (RMAN) to the target database as described in Connecting to the Target Database Using RMAN. Shut down the database To check the ARCHIVELOG mode status, enter the following SQL command: SQL> archive log list; Database log mode Archive Mode Automatic archival Enabled Archive destination /oradump/<MYDB> Oldest online log sequence 7 Next log sequence to archive 7 Current log sequence In this video, will learn how to enable archivelog mode in oracle database.How to enable archive log in oracle.Search also made for following .archivelog lis..

For those who are using Oracle 10g onwards, you may take a look at my post for more: How to Enable Archivelog Mode in Oracle Create archive log destination directory and enter sqlplus [oracle@test ~]$ mkdir -p /u01/app/oracle/product/9.2./archivelog/oracle9i/ [oracle@test ~]$ sqlplus / as sysdb The archivelog mode is an important while configuring the Oracle cluster or data guard replication , you won't be able to setup any replication without enabling the archivelog mode, therefore its always better to enable thearchivelog mode before preparing the replication servers, you can check the archivelog mode using the following command from the oracle sqlplus prompt Connect database as sys user to configure it in archivelog mode. [oracle@12c ~]$ sqlplus / as sysdba // Archive log list: Database is in 'No Archive Mode'. SQL> archive Steps to follow to change the database to Archivelog mode. - Download the database, start the database in MOUNT mode. - Alter the database modifying it to ARCHIVELOG mode - Modify the Log_archive_format parameters with the name format with which the ARCHIVELOG files will be generated. - After the previous processes, the database must be.

How to Enable/Disable Archive Log Mode in Oracle 10g/11g

How to enable/disable archive log mode in oracle database

Enabling Archivelog Mode After you've set the location for your archive redo log files, you can enable archiving. To enable archiving, you need to connect to the Oracle database 12C as SYS (or a user with the SYSDBA privilege) and do the following Question: What are the steps to see if my Oracle database is in ARCHIVELOG mode? Answer: The following steps are required to see if you are running in ARCHIVELOG mode: An Oracle database can run in one of two modes. By default, the database is created in NOARCHIVELOG mode. This command will check to see if you have altered your database to run in ARCHIVELOG mode

How to Enable/Disable ARCHIVELOG Mode in Oracle 11g/12c

Enable Archive Log Mode Shutdown the database using ' shutdown immediate' rather than ' abort' to avoid ORA-00265 instance recovery required, cannot set ARCHIVELOG mode [oracle@z-fbhost2 ~]$ sqlplus / as sysdb How to Enable/Disable Archive Log Mode In 10g and 11g (Doc ID 371139.1) Last updated on DECEMBER 24, 2019. Applies to: Oracle Database - Enterprise Edition - Version 10.1.0.2 and later Oracle Database Cloud Schema Service - Version N/A and later Oracle Database Exadata Express Cloud Service - Version N/A and late

Using EM to Change the Database Archiving Mode. Back to List of Topics. To change the archiving mode from NOARCHIVELOG to ARCHIVELOG using Enterprise Manager, follow the steps below. Note: Oracle Enterprise Manager 9.2 was used in the examples Below is the step by step procedure to enable archivelog mode in 12c RAC database: [oracle@testsrv1 ~]$ srvctl status database -d MYTESTDB Instance MYTESTDB1 is running on node testsrv1 Instance MYTESTDB2 is running on node testsrv How to Disable Archive Log Mode: sqlplus / as sysdba SQL > archive log list Database log mode Archive mode Automatic archival Enabled Archive Destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 19 Next log sequence 20 Current log sequence 20 here you will see Automatic archival log mode ON or Enable

How to Enable ARCHIVELOG Mode in Oracle - AODB

  1. Before we can enable archive log mode we need to put the database into mount mode. We can now set the archive log mode and open the database. We can now see that archive log mode is enabled and that the logs will be written to a location other than the FRA. Disabling archive log mode. Verify the current archive log mode. We now need to shut the.
  2. Where to configure Archive Log mode for multitenant structures - CDB or PDB (Doc ID 2284641.1) Last updated on JANUARY 04, 2021. Applies to: Oracle Database - Enterprise Edition - Version 12.1.0.1 and later Oracle Database Cloud Schema Service - Version N/A and late
  3. SQL> archive log list Database log mode Archive Mode Automatic archival Disabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 11 Next log sequence to archive 13 Current log sequence 13 ***** ***** To enable the Archive-log mode ***** ***** SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance.

This entry was posted in Database Info and tagged archivelog, database, enable. Bookmark the permalink.. 0 people found this article useful This article was helpful. This article was helpful. 0 people found this article useful. Post navigatio SQL> startup mount; ORACLE instance started. Total System Global Area 1.1123E+10 bytes Fixed Size 2068808 bytes Variable Size 9009368760 bytes Database Buffers 2097152000 bytes Redo Buffers 14704640 bytes Database mounted. • We will now change to archivelog mode for oracle and then will open the database. SQL> alter database archivelog. Archive logs are utilized by RMAN, Data Guard, Flashback and many others. If you're going to enable archivelog mode on a real database that's important to you, I would recommend shutting down the database and doing a cold backup just in case. Keeping a final noarchivelog mode backup seems to be a good and excepted practice. Follow. How to Enable/Disable ARCHIVELOG Mode in Oracle 11g/12c When you run the database in NOARCHIVELOG mode, you disable the archiving of the redo log. If you want to take the backup of the database using RMAN then your database must be in ARCHIVELOG mode

What is Archivelog Mode in Oracle and How Do I Enable and

  1. 4. Enable archive log using the below command: alter database archivelog; 5. Open the database in read, write mode. alter database open; 6. Check the archivelog mode. SQL> archive log list; Database log mode Archive Mode Automatic archival Enabled Archive destination /data/arch Oldest online log sequence 169
  2. Here we will learn how to enable archivelog mode in our database: 1. Shutdown the database if its running SQL> shutdown immediate 2. Startup the database is mount state: SQL> startup mount 3. Enable archiving: SQL> alter database archivelog; 4. Open the database: SQL> alter database open; 5. Check if the database is in archivelog
  3. In order to set archivelog mode on or off in the Oracle database as sysdba and do the following actions. shutdown database SQL> shutdown immediate; startup database in mount mode SQL> startup mount; Change DB log mode SQL> alter database archivelog; Open DB for normal use SQL> alter database open; check archivelog status SQL> archive log lis
  4. Follow below steps for enabling archive log mode in oracle RAC. 1. stop the database service. srvctl stop database -d DBACLASS 2. start the database in mount state. srvctl start database -d DBACLASS -o mount 3. enable archive log mode. SQL> alter database archivelog; Database altered. 4. Restart the database service (using srvctl

How To Enable Archive Log Mode In Oracle Database 19c

  1. Oracle recommends ARCHIVELOG mode for all production databases. Setting the Initial Database Archiving Mode. When you create the database, you set the initial archiving mode of the redo log in the CREATE DATABASE statement. If you do not specify either ARCHIVELOG or NOARCHIVELOG, NOARCHIVELOG is the default
  2. In Database environment, issue the following command to enable archive log mode: STARTUP MOUNT; ALTER DATABASE ARCHIVELOG; SHUTDOWN IMMEDIATE; In Grid environment, start the entire clustered database by following command as oracle user: $ srvctl start database -d MYSID By above method you will alter your RAC database to archive log mode
  3. Steps to enable Archivelog mode in RAC environment: The following steps need to be taken to enable archive logging in a RAC database environment: 1. Shutdown immediate all database instances $ srvctl stop database -d <db_unique_name> 2. Startup database in mount mode $ srvctl start database -d <db_unique_name> -o mount 3. Enable archive loggin
  4. An Oracle database can run in one of two modes. By default, the database is created in NOARCHIVELOG mode. This command will check to see if you have altered your database to run in ARCHIVELOG mode. Set the environment variables if not added refer my last post to set the environment variable
  5. This video How to enable archive log mode in oracle demonstrates how to put oracle database into archive log mode. The steps are shown in Oracle Command Prompt. Once Oracle database archive log mode is set then archive files are created. This demonstration is done in Oracle 11g
  6. d: You have to shut down and restart the database. You must have enough space to store your archive logs. Before you turn on archiving, decide where to store the archive [
  7. HOW TO ENABLE DISABLE ARCHIVE LOG MODE IN ORACLE 11G=====archive log list;show parameter log_archive_dest_1;sh..

How to Enable Archive Log Mode in Oracle 19c - Root Fa

Remember that once you disable archive log mode you need to take a fresh backup once archive log mode is turned back on. The Oracle documentation says the following about enabling and disabling archive logging in RAC environments: To enable archive logging in RAC environments, the database must be mounted but not open. Then start RAC in a. 4) NB. If you have only just enabled the ARCHIVELOG mode and there are no existing archive logs as yet, the Online APM backups will still fail. There needs to be at least one valid archive log in the defined directory for the backup to succeed. To force the creation of an archive log issue the command: SQL> alter system switch logfile; System. How can enable ARCHIVELOG MODE in 10gr1 In 10g Archivelog mode enabling is easy becuase we need to just turn DB log mode and archive log is automatic start. shutdown database SQL> shutdown immediate; startup database in mount mode SQL> startup mount; Change DB log mode SQL> alter database archivelog; Open DB for normal use SQL> alter database. Mode of Logging There are two types of logging modes in Oracle database :-1. ARCHIVELOG :-In this type of logging whatever oracle writes in a redo log file related to transactions in database, saved to another location after a log file has been filled . This location is called Archive location. if database is in Archive log mode then in case of any disaster, we can recover our database upto. $ export ORACLE_SID=<MYDB> where <MYDB> is the name of the database $ sqlplus /nolog SQL> connect / as sysdba; To enable ARCHIVELOG mode status, enter the following SQL commands: SQL> Shutdown SQL> Startup mount SQL> Alter database noarchivelog; SQL> alter database open; To check the ARCHIVELOG mode status, enter the following SQL command

Please note : For example, if you would like to set the database in NO ARCHIVE LOG mode ( or disable archive log mode ) then command should be SQL > alter database noarchivelog; 6) Now open the database using the following comman Before explaining the details about How to find archive log history,how to find archive log sequence number in oracle,how to check archive log mode in oracle etc ,it will be good to understand the archive log and archive related view in database. General Archive log information. So what is archive log in Oracle databas So now we have enabled archivelog mode and have some archivelog file also!!! Posted by Apun Hiran at 12:22 PM Labels: 11g , apun , apunhiran , archive log , archivelog , enable , hiran , log_archive_dest_1 , mode , ORA-16179 , ORA-32017 , oracle - [Instructor] In order for us to utilize the variousbackup and recovery technologies we presentthroughout this course, there are several prerequisiteswe need to take care of.First and foremost, we need to make sure our Oracle databaseis configured with Archive mode enabled.When Archive mode is enabled, Oracle turns each activeread or log file into an archived read or log. enable archivelog mode oracle 11g Use RMAN in NOARCHIVE. December 3, 2020 by Shripal. Hello, friends in this article I'm going to demonstrate to you how to use RMAN in NOARCHIVE mode steps by steps. As you know Oracle strongly recommended running your database in archivelog mode for database security. If you running the database in.

In this is the article we are going to see Diabling Archive Log Mode In Oracle 19c RAC Database Step:-1 Before Changing the archivelog mode check the status. [oracle@rac1 ~]$ sqlplus / as sysdb Oracle Database lets you save filled groups of redo log files to one or more offline destinations, known collectively as the archived redo log, or more simply the archive log. The process of turning redo log files into archived redo log files is called archiving. This process is only possible if the database is running in ARCHIVELOG mode Because all PDBs share the same redo log files, it's not possible to enable archive log mode only for a specific PDB. All PDBs share the archive log mode of the CDB. Remember, the PDBs themselves don't have any instance (processes and memory areas) or control file and redo logs. Oracle Database 12c Feature: Multitenant Databas

Enable/Disable Archive Log Mode 10g/11g using Database Control

How to Enable Archivelog Mode for an Oracle database

The process of turning redo log files into archived redo log files is called archiving. It is only possible if the database is running in ARCHIVELOG mode. Here are some advantages to be in ARCHIVELOG mode:. Recover a databas In force logging mode, Oracle logs all changes to the database except changes in temporary tablespaces and temporary segments Oracle Database doesn't enable supplemental logging by default. ArchiveLog expiration specifies the duration in hours before archive/redo log files are automatically deleted

Oracle DBA Scripts: Oracle Backup & Recovery Series - 3

This document describes how to enable and disable archive log in Oracle RAC database. ENABLE ARCHIVE LOG MODE IN RAC. Step1: stop database instance on node1 using sqlplus. [oracle@rac-node1 bin]# Follow below steps for enabling archive log mode in oracle RAC. stop the database service. srvctl stop database -d DBACLASS. start the database in mount state. srvctl start database -d DBACLASS -o mount. enable archive log mode. Restart the database service (using srvctl) set the archive destination to a ASM DISK If you would like to do this through the command line take at the post Enable/Disable Archive Log Mode 10g/11g. Note: It is recommended to perform a backup of the database (after a shutdown normal or immediate) prior to changing the archive status of a database. Enable Archive Log Mode. Log into Database Control and click on Availability tab

Enable/Disable Archive Log Mode 10g/11

  1. Each Oracle instance will use its set (group) of online redologs in a circular manner. Once an online redolog fills, Oracle moves to the next one. If the database is in Archive Log Mode, Oracle will make a copy of the online redo log before it gets reused. A thread must contain at least two online redologs (or online redolog groups)
  2. In this tutorial i will explained about how to enable archivelog in postgresql server. WAL Archive log In PostgreSQL database system, the actual database 'writes' to an addition file called write-ahead log (WAL) to disk. It contains a record of writes that made in the database system
  3. istration -- Moid Monday, July 11, 2011. MIITDocID-955: How to enable archivelog mode? --Moid Click here for the detail.--Moid Read more on Redo and Archivelog queries. Posted by Moid Muhammad at 9:33 PM. Email This BlogThis! Share to Twitter Share to Facebook Share to Pinterest

1. stop the database service. srvctl stop database -d RAC 2. start the database in mount state. srvctl start database -d RAC -o mount 3. enable archive log mode. SQL> alter database archivelog; Database altered. 4. Restart the database service (using srvctl) srvctl stop database -d RAC srvctl start database -d RAC 5. set the [ Enable Archivelog Mode - Oracle Database Tutorial In order for us to enable Archive Log mode in our database, we first have to shut down our Oracle instance, note, the entire instance, and not. How To Enable Archive Log Mode In Oracle RAC Database dbtut November 12, 2018 ORACLE Enabling the archive log mode in the RAC database is slightly different from the normal database When you enable this mode redo logs will be archived instead of overwritten. The archivelogs are stored in a seperate place usually can backed up regularly by your standard filesystem backup system. Archive logs are utilized by RMAN, Data Guard, Flashback and many others. Enabling archive mode is simple, just connect to your database in mounted. In this topic, I will show how to change Archive Log Mode in Oracle Database. Enable Archive Log Mode in RAC: Archive Log Status: Stop database using srvctl: Start Database with mount mode in one node and change the mode: Startup using srvctl for RAC: Validation: Disable Archive Log Mode in RAC: Shutdown Database Using Continue readin

Now the database is in ARCHIVELOG mode and also automatic archival is enabled. Note1: We must take baseline backup right after enabling ARCHIVELOG mode. Note2: After enabling ARCHIVELOG mode, it is better if we set the following init.ora parameters: log_archive_dest, log_archive_dest_1, log_archive_format When a database is in archive log mode oracle ensures that the online redo logs are not overwritten until they are archived. When a database is in archive log mode chances of data loss are minimal. Here is a step by step procedure of how to enable archive logging in an Oracle database. First an The following are the steps required to disable archive log mode on an Oracle 10g or 11g database. Verify the database log mode. [oracle@ora1 ~]$ sqlplus / as sysdb Oracle Workshop :: Enable/Disable Archive Log Mode on Oracle Database 10g/11

How To Change Archivelog mode and Destination In Oracle

In this article we explore how to enable archivelog mode in your database, what REDO is and much more about archive log mode in Oracle If you want to enable archive log mode in your database it's very simple, but you will need to restart the database to make this change To check if the ARCHIVELOG mode is enabled. Log into Oracle server as an Oracle user with SYSDBA equivalent privileges. Enter the following command at the SQL*Plus prompt: ARCHIVE LOG LIST; This command displays Oracle's archive log settings for this instance. For the agent to function properly, the following should be set: Database log mode.

Managing Archived Redo Logs - Oracl

Enabling ARCHIVELOG Mode in Oracle 19c RAC - oraho

Enable/Disable Archive log mode in RAC 11gR2 Enable Archivelog. 1) Login to one of the nodes , verify the archive log mode. SQL> archive log list Disable Archivelog 1) export oracle_sid=orcl1. SQL> alter system set cluster_database=false scope=spfile sid='orcl1'; System altered. 2) srvctl stop database -d orcl -o immediate. To change the Oracle database in ARCHIVELOG mode. PFB below mentioned steps:-1. If needed set the archive log destination where you want to save your archive logs whether to a single location or to multiple location. If this is not set then Oracle save archive log files in DB_RECOVERY_FILE_DEST location if set Level: Beginner (DBA) Question: How to check database ArchiveLog mode? Answer: To check the database archive log mode you need to Step 1: Connect as SYSDBA ex: connect sys/sysdbapass@server as sysdba Step 2: Execute one of the following commands: a) ARCHIVE LOG LIST --In SQL*PLus SQL> ARCHIVE LOG LIST Database log mode No Archive Mode The oracle database is in archivelog mode. PMWO process of the third party takes over 8 plus hours to complete. And this process is generating a lot of archive logs files in the database server. The PMWO process is generating 90 GB of archive logs in a span of 8 hrs In Oracle 12c multitenent database we have redo logs present at container database, there is no redo logs at pluggable database, so enabling archive log mode is possible at CDB level only. First check whether the archiving enabled or not at CDB level. [04:26 PM oracle@ora12c ~]$ . oraenv ORACLE_SID = [ipl] ? The Oracle

Enabling ARCHIVELOG Mod

  1. How to enable archive log mode of database ? Follow the below steps to enable archive log mode: OS]~ sqlplus / as sysdba 1.Check whether archive log mode is enabled or no
  2. Below are the steps to enable Archivelog Mode in Oracle RAC # make sure orclrac database is running srvctl status database -d orclrac # stop the database srvctl stop database -d orclrac -o immediate srvctl status database -d orclrac # start the database in mount state srvctl start database -d orclrac -o mount # using sqlplus, as sysdba sqlplus / as sysdba # verify that the instances are.
  3. We hv an Oracle 8i database running in Oracle 8i server. When we try to put the database in Archive log mode we are getting the following er
  4. 5. alter database archivelog mode 6.create spfile from pfile 7. shutdown immediate. 8. startup 9. archive log list above procedure is also correct but you can also switch archivelog mode 1. set all require parameters with scope=spfile. note: scope=spfile specify only for non modifiable parameters. 2
  5. This is one of the prequisite before starting RMAN backups and recovery. This is how to enable archiving: Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Productio With the Partitioning, OLAP and Data Mining options SQL> archive log list Database log mode No Archive Mode Automatic archival Disabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest onlin

SQL> archive log list. Database log mode Archive Mode. Step:-2 Change archivelog location. Note:- 1st set the FRA value before changing. Step:-3 Check the status of archivelog location. SQL> archive log list. Also know, how do I know if Oracle is running in archivelog mode? Checking ARCHIVELOG mode statu There are two types of logging modes in Oracle database :-1. ARCHIVELOG :-In this type of logging whatever oracle writes in a redo log file related to transactions in database, saved to another location after a log file has been filled .This location is called Archive location. if database is in Archive log mode then in case of any disaster, we can recover our database upto the last commit and.

Enable / Disable Archive Log Mode In Oracle11

SQL> archive log list; Database log mode No Archive Mode. Automatic archival Disabled. Archive destination USE_DB_RECOVERY_FILE_DEST. Oldest online log sequence 102. Current log sequence 104. #This shows that database is not in archivelog mode. Shut down the databas Any Oracle database that contains important data should be running in ARCHIVELOG mode. Running in Archive log mode enables you to take hot backups and perform point-in-time recovery. Alter the database to run in Archivelog mode: Standard edition , single node instance How to Enable & Disable flashback in Oracle database 11gR2(11.2.0.4.0) Flashback in Oracle Database It's a technology in Oracle database to perform restore the database to a particular point in past. In case if you have lost the data like DML & want to retrieve, you can retrieve the rollback operation through flashback without using Read Mor If you are going to enable archivelog mode on a real database that is important to you, I would recommend shutting down the database and doing a cold backup just in case. Keeping a final noarchivelog mode backup seems to be a good and excepted practice ORA-00308: can not open archive log. I checked the path and filename and the archive log file is there. I checked the property of the file and it is NOT read-only. I don't know why Oracle cannot open it. By the way, I also found out that the standby database is running at NOARCHIVELOG mode. I changed it to the ARCHIVELOG mode. Re-issue the.

How to enable or disable Archive log mode in Oracle

To change the archiving mode of the database, use the ALTER DATABASE statement with the ARCHIVELOG or NOARCHIVELOG clause. To change the archiving mode, you must be connected to the database with administrator privileges (AS SYSDBA). The following steps switch the database archiving mode from NOARCHIVELOG to ARCHIVELOG: 1 Enable Archive Log Mode In Oracle RAC 11g To check the status: [oracle@rac1 ~]$ srvctl status database -d PROD Instance PROD1 is running on node rac1 Instance PROD2 is running on node rac2 To stop the database: [oracle@rac1 ~]$ srvctl stop database -d PROD -o immediat When we create a database using dbca silent option, by default the database is created in noarchivelog mode. So to enable archiving, one will have to shutdown, mount, enable archivelog and then open the database. Normally we'll use following command Continue reading There are times as a DBA, when you need to know the current state of the database relative to the redo logs and archive logs. You might want to find out something as simple as whether the database is in archivelog mode, or you may want to find out which redo log file is currently in use

How to Enable ARCHIVELOG Mode in Oracle - Ed Chen Logi

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