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How do I get rid of standby redo logs?

How do I get rid of standby redo logs?

How to drop the standby redo logs

  1. Enviroment.
  2. SET STANDBY_FILE_MANAGEMENT=’MANUAL’
  3. Drop SRL On Standby.
  4. SET STANDBY_FILE_MANAGEMENT=’AUTO’
  5. Enable MRP.
  6. Enviroment.
  7. SET STANDBY_FILE_MANAGEMENT=’MANUAL’
  8. Drop SRL On Standby.

Why standby redo logs are required?

If you configure your standby for Maximum Protection, then Standby Redo Logs are required. Most implementations are configured for Maximum Performance because they do not want the performance hit Max Protect may impart on their application. Even if you are using Max Performance, you still want to implement SRLs.

How do I add standby to redo log?

To create new standby redo log file groups and members, you must have the ALTER DATABASE system privilege. The standby database begins using the newly created standby redo data the next time there is a log switch on the primary database.

How do I manually use redo logs?

To apply the archived redo logs in the archive gap

  1. Start up and mount the standby database (if it is not already mounted).
  2. Recover the database using the AUTOMATIC option:
  3. Cancel recovery after the Oracle database server has applied the available logs, by executing the following statement (or typing CTRL+C):

How do I delete a redo log in Oracle?

To drop specific inactive redo log members, use the ALTER DATABASE statement with the DROP LOGFILE MEMBER clause. The following statement drops the redo log /oracle/dbs/log3c. rdo : ALTER DATABASE DROP LOGFILE MEMBER ‘/oracle/dbs/log3c.

How do I recreate standby redo logs on standby database?

In this case you have to just shutdown the database, bring it to mount stage and drop the standby redo log group. On Primary database -> SQL>alter system switch logfile; On Standby Database –> Check if it is moved other group.

What is standby redo log file?

Answer: A standby redo log resides on the standby database site. The standby redo log file is similar to an online redo log, except that a standby redo log is used to store redo data that has been received from a primary database. Oracle Data Guard used to have the onerous problem of loosing the last redo log.

What is FAL_SERVER and FAL_CLIENT in Oracle?

The value is an Oracle Net service name, which is assumed to be configured properly on the standby database system to point to the desired FAL server. FAL_CLIENT specifies the FAL (fetch archive log) client name that is used by the FAL service, configured through the FAL_SERVER parameter, to refer to the FAL client.

How do I change my primary database to standby?

Activate physical standby database

  1. Step 1 (Optional) Identify and resolve any gaps in the archived redo log files.
  2. Step 2 Initiate the failover operation on the target physical standby database.
  3. Step 3 Convert the physical standby database to the primary role.
  4. Step 4 Shut down and restart the new primary database.

How do I manually restore a standby database?

To place the standby database in manual recovery mode:

  1. Use SQL*Plus to connect to the standby instance and then start the Oracle instance at the standby database.
  2. Mount the standby database: ALTER DATABASE MOUNT STANDBY DATABASE;

Can I delete Oracle redo logs?

It is permissible to drop redo log files so that a multiplexed redo log becomes temporarily asymmetric. For example, if you use duplexed groups of redo log files, you can drop one member of one group, even though all other groups have two members each.

How do I change the redo log in Oracle?

  1. Shut down the database. SHUTDOWN.
  2. Copy the redo log files to the new location. Operating system files, such as redo log members, must be copied using the appropriate operating system commands.
  3. Startup the database, mount, but do not open it.
  4. Rename the redo log members.
  5. Open the database for normal operation.

How do I drop and recreate redo logs in Oracle RAC?

Steps to drop redo log groups

  1. While dropping redo log group & we need to check the status of redo log groups. redo log group status should be INACTIVE or UNUSED.
  2. To drop inactive/unused redo log group: SQL> Alter database drop logfile group 1; Database altered.
  3. Check again to verify the redo log groups:

What is a standby database in Oracle?

A standby database is a database replica created from a backup of a primary database. By applying archived redo logs from the primary database to the standby database, you can keep the two databases synchronized. A standby database has the following main purposes: Disaster protection. Protection against data corruption.

What is managed recovery process in Oracle?

The managed recovery process (MRP) applies information from the archived redo logs to the standby database. When performing managed recovery operations, log apply services automatically apply archived redo logs to maintain transactional synchronization with the primary database.

  • September 15, 2022

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