What is difference between archive and redo log
Archive logs are archived redo(online) log files.
In redo log files are all changes that happened to your data.
If your database is in archivelog mode, than redo logs can’t be overwritten, they are archived in some other location when they are full.
Redo and archive logs are used in various database recovery scenarios..
How do I increase archive destination size in Oracle
After you start SQL*Plus and connect to the database, set the size of the flash recovery area. For example, set it to 10 GB: SQL> ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE = 10G SCOPE=BOTH SID=’*’; Set SCOPE to BOTH make the change both in memory and the server parameter file.
How do I reduce the redo log in Oracle
In order to reduce the redo log generation, DBAs can increase the main memory cache size, one should also increase the commit frequency to reduce the disk i/o. However, for the faster i/o, DBAs can add more disk chains, for an economic solution, if cost is not the factor then it is suggested to use SSD disks.
How do I delete archives in standby database
Dataguard command for delete archive logConfigure _log_deletion_policy=’ALL’ init parameter and restart the instance for take effect. ALTER SYSTEM SET “_log_deletion_policy”=’ALL’ SCOPE=SPFILE;Configure RMAN deletion policy using RMAN command. — Set for current standby or primary. … You can also configure this command on Primary Server.Jun 11, 2019
How do I delete Archivelog older than 7 days
Delete RMAN archivelogs older than 1 daysDELETE ARCHIVELOG ALL COMPLETED BEFORE ‘sysdate-1’; DELETE ARCHIVELOG ALL COMPLETED BEFORE ‘sysdate-1’;CROSSCHECK ARCHIVELOG ALL; CROSSCHECK ARCHIVELOG ALL;DELETE EXPIRED ARCHIVELOG ALL; DELETE EXPIRED ARCHIVELOG ALL; Post Views: 4,812.Nov 13, 2018
How do I get rid of archive log automatically
Delete Archive logs Automatically on StandbyQuery deleted logs. … Query whether logs are deleted by the operating system. … Set the Log_Auto_Del_Retention_Target Parameter to an appropriate value, and check if the logs are automatically deleted. … Check if the logs are deleted. … Check to see if the 69.More items…•Jun 1, 2020
How do I find my archive log list
Checking ARCHIVELOG mode statusLog in as OS user oracle and enter the following commands: $ export ORACLE_SID=
How do I change the archive log destination
Expand Databases. Expand your database. Expand Instance and select Configuration. You can change the archive destination on the Recovery page.
How do I get rid of archive log gap in data guard
Solution[Standby] Stop the managed standby apply process: SQL> alter database recover managed standby database cancel; … [ Standby] Shutdown the standby database. [ … [Primary] On the primary, create a new standby controlfile: … [ … [ … [ … [Standby] Replace the controlfile with the one you just created in primary.More items…•Dec 18, 2009
What to do if archive log is full
You can also fix this full problem by adding space to your archived redo log directory. For full scripts to monitor and remove archived redo logs, see the book “Oracle Shell Scripting” by Jon Emmons.
How do I delete expired archive logs in RMAN
It will crosscheck the archivelog files with RMAN repository deleted files status changed to expired in RMAN repository. Then issue below command to remove from the RMAN repository. RMAN> delete noprompt expired archivelog all; this command will remove the files without prompting the Yes or no.
What is difference between obsolete and expired backup in RMAN
A backup is considered expired only when RMAN performs a crosscheck and cannot find the file. In short, obsolete means “not needed,” whereas expired means “not found.”
Where are Oracle archive logs stored
To get started, from the last article, remember that Oracle placed archive logs in a default directory of $ORACLE_HOME/dbs and, if flash recovery was enabled during installation, in the USE_DB_RECOVERY_FILE_DEST, which equated to the init. ora parameter db_recovery_file_dest.
How do I check my Data Guard log
Verify the state and status of the standby database by viewing its information on the Data Guard Overview page. Run the Verify operation after the switchover completes to examine the alert log file of the new primary database and to verify the status of the configuration.
What are Oracle archive logs used for
What Is the Archived Redo Log? 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.
How do I delete obsolete
To delete obsolete backups:Connect RMAN to the target database as described in “Connecting to the Target Database Using RMAN.”Delete all obsolete backups, including backup sets and image copies, using the following command: DELETE OBSOLETE;