How do I create a standby control file

Connect to the primary database and create the control file for your standby database. For example, to create the standby control file as / oracle/dbs/stbycf. ctl on the primary site, enter the following: SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE AS ‘/oracle/dbs/stbycf.

How do I recreate a standby control file?

  1. Create a standby controlfile on the primary: alter database create standby controlfile as ‘/tmp/primary. …
  2. Ship this file to the standby database server.
  3. Create a backup of the existing standby controlfile just in case (rman: backup current controlfile format ‘/tmp/backup.

How do I create a standby logfile?

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 create a standby database?

  1. Create a Backup Copy of the Primary Database Datafiles.
  2. Create a Control File for the Standby Database.
  3. Create a Parameter File for the Standby Database.
  4. Copy Files from the Primary System to the Standby System.
  5. Set Up the Environment to Support the Standby Database.
  6. Start the Physical Standby Database.

How do I create a standby database using a cold backup?

  1. Login as Oracle user in Primary Database Server: …
  2. Determine if FORCE LOGGING is enabled. …
  3. Create pfile from spfile. …
  4. Open parameter file INITprim. …
  5. Now startup database using newly created pfile. …
  6. Check the parameter whether all set properly.

How do I create a standby database in Oracle 12c?

  1. Enable Forced Logging.
  2. Configure Redo Transport Authentication.
  3. Configure the Primary Database to Receive Redo Data.
  4. Set Primary Database Initialization Parameters.
  5. Enable Archiving.

How do I mount a standby database?

  1. Start the database: SQL> STARTUP NOMOUNT;
  2. Mount the standby database: SQL> ALTER DATABASE MOUNT STANDBY DATABASE;
  3. Start the managed recovery operation: SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE 2> DISCONNECT FROM SESSION;

How do you build a dataguard?

  1. Logging. Check that the primary database is in archivelog mode. …
  2. Initialization Parameters. Check the setting for the DB_NAME and DB_UNIQUE_NAME parameters. …
  3. Service Setup. …
  4. Backup Primary Database. …
  5. Create Standby Controlfile and PFILE. …
  6. Copy Files. …
  7. Start Listener. …
  8. Restore Backup.

How do I manually create a standby database?

  1. Steps.
  2. On the Primary database (it should be in ARCHIVE LOG MODE):
  3. Modify the init.ora files on PROD defining location for archived redo log files on both primary and the standby server. …
  4. Ensure that your primary database is in archive log mode. …
  5. 3 Place the primary database in FORCE LOGGING mode.
How do I create a standby database read write?
  1. 1.) Open standby database in mount state :
  2. 2.) Recover if there is any archive logs:
  3. cancel.
  4. 3.) Finish the Recovery process :
  5. 4.) Activate the Standby Database :
  6. 5.) Check the new status.
  7. 6.) Open the Database.
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How do I create an online redo log file in standby database?

  1. Stop Redo apply: SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
  2. Set STANDBY_FILE_MANAGEMENT to MANUAL. SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=’MANUAL’;
  3. Add Redolog File Group: …
  4. Set STANDBY_FILE_MANAGEMENT to AUTO. …
  5. Start Redo Apply (Managed Recovery):

What is Fal_server and Fal_client in Data Guard?

Answer: The fal_server and fal_client are init. ora parameters are used for the gap resolution. … The fal_client specifies the FAL (fetch archive log) client name that is used by the FAL service, configured through the fal_server initialization parameter, to refer to the FAL client.

How do I change from primary to standby database?

  1. Step 1 : Verify whether it is possible to perform a switchover. …
  2. Step 2 : Check that there is no active users connected to the databases. …
  3. Step 3 : Switch the current online redo log file on primary database and verify that it has been appleid.

How will you make physical standby to active data guard?

  1. When the standby is caught up, stop the Apply on the physical standby.
  2. Open the Physical standby read only.
  3. Restart the apply.
  4. Begin making changes to the primary.
  5. Verify that those changes arrive at the standby.

Where is my standby database primary?

You can find all standby databases for a primary database in data guard by using one of the queries below. Standby -> Returns the unique name of the current database. Primary -> Returns the unique name of the other database in the Environment.

How do you bounce a standby database?

startup nomount; alter database mount standby database; alter database recover managed standby database disconnect from session; Leave the standby instance for few min to catch up the logs and run the rest of the commands.

How many standby databases we can create in 12c?

2 Standby Databases. A standby database is a transactionally consistent copy of the primary database. Using a backup copy of the primary database, you can create up to thirty standby databases and incorporate them into an Oracle Data Guard configuration.

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 physical standby database in Oracle?

A physical standby database is an exact, block-for-block copy of a primary database. A physical standby is maintained as an exact copy through a process called Redo Apply, in which redo data received from a primary database is continuously applied to a physical standby database using the database recovery mechanisms.

What is physical standby database?

A physical standby database is an exact, block-for-block copy of a primary database. A physical standby is maintained as an exact copy through a process called Redo Apply, in which redo data received from a primary database is continuously applied to a physical standby database using the database recovery mechanisms.

What is a logical standby database?

Logical standby databases A logical standby database is kept in sync with the primary by transforming redo data received from the primary into logical SQL statements and then executing those SQL statements against the standby database.

How do you shutdown Data Guard in primary database?

  1. In this article we will look at Oracle Data Guard startup and shutdown sequence. …
  2. Stop log apply service or MRP and shutdown the standby.
  3. Stop log shipping from primary and shutdown primary database.
  4. Startup primary database and enable log shipping.

How do I create a SQL database read write?

  1. Right-click database you need to mark as read-write.
  2. Select “Properties”
  3. In the “Database Properties” window select “Options” tab.
  4. Scroll down and find “State” tab, go to “Database Read-Only” statement and select “False”

How do you open physical standby for read/write test and flashback?

  1. Step 1 – In Standby database. A ) Set up a flash recovery area. …
  2. Step 2 – In Primary Database. …
  3. Step 3 – In Standby database. …
  4. Step 4 – In Standby database. …
  5. Step 5 – In standby database.

How can I tell if my database is in read write mode?

SELECT open_mode FROM v$database; If the value is: ‘MOUNTED’, your database is mounted. ‘READ WRITE’, then you can assume it’s been activated.

How do I drop and recreate redo logs in standby database?

  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.

How do I create a redo log in Oracle?

To create a new group of redo log files, use the SQL statement ALTER DATABASE with the ADD LOGFILE clause. The following statement adds a new group of redo logs to the database: ALTER DATABASE ADD LOGFILE (‘/oracle/dbs/log1c. rdo’, ‘/oracle/dbs/log2c.

How do I check standby for redo logs?

How to identify standby redo logs ? SQL> select * from v$logfile where type=’STANDBY’; .

What is Dg_config parameter?

Specify the DG_CONFIG attribute to identify the DB_UNIQUE_NAME for the primary database and each standby database in the Data Guard configuration. The default value of this parameter enables the primary database to send redo data to remote destinations and enables standby databases to receive redo data.

What is Db_file_name_convert?

DB_FILE_NAME_CONVERT is useful for creating a duplicate database for recovery purposes. It converts the filename of a new datafile on the primary database to a filename on the standby database. If you add a datafile to the primary database, you must add a corresponding file to the standby database.

What is Dg_config?

dg_config – Specifies a list of up to nine service provider names (defined with the sp_name initialization parameter) for all of the databases in the Data Guard configuration.