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How do I switch from primary to standby database using Dgmgrl?

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How do I switch from primary to standby database using Dgmgrl?

Data Guard switchover with dgmgrl

  1. Ensure SPFILE is used.
  2. Verify dmon process is running and broker parameters viz.
  3. Check if LOCAL_LISTENER is set(This is needed only if you are non-default port other than 1521)
  4. Verify if GLOBAL_DBNAME in listener.ora is set correctly to.
  5. Verify if START_OPTIONS is set to MOUNT in the OCR.

How do I add a standby database to Dgmgrl?

Enable Broker Connect to both databases (primary and standby) and issue the following command. ALTER SYSTEM SET dg_broker_start=true; On the primary server, issue the following command to register the primary server with the broker. Now add the standby database.

How do I change from primary to standby database?

Switchover to Physical Standby Database in Oracle 11g

  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 do I reinstate my standby database after failover?

To reinstate the failed primary database, start it to the mounted state. Then run DGMGRL, connect to the new primary database and reinstate the old primary database. Step 1 Restart the Old Primary Database. % sqlplus sys as sysdba Enter password: password SQL> STARTUP MOUNT; ORACLE instance started.

How do I check my primary standby database status?

Following command will help to check the Standby is sync with Primary Database in Oracle Dataguard Environment. select thread#, max(sequence#) “Last Standby Seq Applied” from v$archived_log val, v$database vdb where val. resetlogs_change# = vdb.

How do I check my Dgmgrl status?

DGMGRL> SHOW DATABASE [VERBOSE] db_name [property_name]; DGMGRL> SHOW DATABASE ‘devdb’; DGMGRL> SHOW DATABASE VERBOSE ‘test’; DGMGRL> SHOW DATABASE ‘dwhdb’ ‘StatusReport’;

How do I make a standby database standby?

  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.

What is Dgmgrl Oracle 11g?

CONVERT – Converts a database from one type to another (from Oracle 11g). DGMGRL> CONVERT DATABASE database_name TO {SNAPSHOT STANDBY|PHYSICAL STANDBY};

How do you do a switchover in 12c?

On Primary database:

  1. Step 1 : Connect to Primary database and convert primary database to standby.
  2. Step 2 : Shutdown primary database:
  3. Step 3 : Startup nomount old primary database as new standby database:
  4. Step 4 : On original standby database, Convert old standby database to primary database:
  5. Step 5 :
  6. Step 6 :

How do you do a manual switchover?

How to Successfully Perform Manual Switchover to Physical Standby Database

  1. Step1> Prerequisite for switchover to be successful.
  2. Step3> Trigger the Switchover On Standby.
  3. Step5> Configure Log Shipping from New Primary To New standby.
  4. Step6> Start Media Recovery on New Standby Database.
  5. Step7> Post Switchover task.

What is switchover and failover in dataguard?

A switchover is a role reversal between the primary database and one of its standby databases. A failover is when the primary database (all instances of a RAC primary database) fails and one of the standby databases is transitioned to take over the primary role.

How do I change the protection level in Oracle?

Use the following command to change protection mode. SQL> ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY; Database altered. Now, open database. SQL> alter database open; Database altered.

How to connect to standby database using dgmgrl?

DGMGRL> connect sys/xxxxConnected. DGMGRL> CREATE CONFIGURATION ‘GenesisDR’> AS> PRIMARY DATABASE IS ‘genoa1_js’> CONNECT IDENTIFIER IS ‘genoa1_js’> ; Configuration “GenesisDR” created with primary database “genoa1_js” Add the Standby database to the configuration

What is the difference between quit and failover in dgmgrl?

FAILOVER – Changes a standby database to be the primary database. HELP – Displays description and syntax for a command. QUIT – Exits the program. REINSTATE – Changes a database marked for reinstatement into a viable standby. REM – Comment to be ignored by DGMGRL.

How do I resolve the switchover error in dgmgrl?

If you are receiving the error you can exit out of the dgmgrl and mount the new standby to complete to the switchover. To prevent this problem in the future add a static registration for < sid >_DGMMGRL to your ORACLE_HOME/network/admin/listener.ora.

How to add static entry for dgmgrl in Data Guard broker?

On both Primary as well as Standby database start the Data Guard Broker process SQL> ALTER SYSTEM SET DG_BROKER_START=TRUE SCOPE=BOTH;System altered. Edit the listener.ora on both nodes to add a static entry for DGMGRL This is to prevent the ORA-12154 error which can be observed on startup of the standby database after performing a switchover.