Question: How Do You Open A Physical Standby Database In Read Write Mode?

How do I check my primary standby database status?

Oracle DBA – A Helping Hand….Step 1 : Check the status of database on both server.Step 2 : Check for GAP on Standby.

Step 3 & 4: Check redo received and applied on standby.

Step 5: Identify the missing archive log file.

Step 6: Copy missing archive log file.

Step 7: Register archive logfile with standby.More items…•.

How do I connect to Dgmgrl?

DGMGRL> ADD DATABASE ‘logdb’ AS CONNECT IDENTIFIER IS logdb MAINTAINED AS LOGICAL; DGMGRL> ADD DATABASE ‘devdb’ AS CONNECT IDENTIFIER IS devdb.foo.com; CONNECT – Connects to an Oracle database instance. CONVERT – Converts a database from one type to another (from Oracle 11g).

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.

How would you create a physical standby database using backup pieces?

How to Create Physical Standby Database using RMAN Backup With Duplicate CommandEnvironment. … Enable Forced Logging on Primary.Check Password File on Primary.Configure a Standby Redo Log on Primary.Verify Archive Mode Enabled on Primary.Set Primary Database Initialization Parameters.More items…•

How do I create a physical standby database?

Create a Backup Copy of the Primary Database Datafiles.Create a Control File for the Standby Database.Create a Parameter File for the Standby Database.Copy Files from the Primary System to the Standby System.Set Up the Environment to Support the Standby Database.Start the Physical Standby Database.More items…

How do I start MRP in standby?

8.1. 1 Starting Up a Physical Standby DatabaseStart and mount the physical standby database: SQL> STARTUP MOUNT;Start Redo Apply or real-time apply: To start Redo Apply, issue the following statement: SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE 2> DISCONNECT FROM SESSION;

How do I know if Data Guard is working?

Check if dataguard is running properlyView the sequence of your arch log on the primary db.View the sequence of your arch log on the standby db.switch a log file on the primary db.check the present of the last arch log on standby database.check if arch log is applyed on standby database.

What is Data Guard in Oracle Database?

Oracle Data Guard ensures high availability, data protection, and disaster recovery for enterprise data. Oracle Data Guard provides a comprehensive set of services that create, maintain, manage, and monitor one or more standby databases to enable production Oracle databases to survive disasters and data corruptions.

What is active standby database?

Active dataguard means, the standby database is open with read only mode, even when redo logs are getting applied in real time. … Reporting queries can be offloaded to standby database.

How do I check my MRP process in standby database?

Please query v$managed_standby from the standby database if MRP is started.% ps -ef |grep -i mrp. … PROCESS THREAD# SEQUENCE# STATUS. … SQL>recover managed standby database cancel; … DGMGRL> EDIT DATABASE ‘‘ SET STATE=’APPLY-OFF’;

How do I remove standby database from Dgmgrl?

dgmgrl> disable database ; << The Standby db_unique_name you are removing. dgmgrl> remove database ; … show parameter log_archive_dest_n << replace 'n' with the # for the Standby Redo transport destination to make sure it's removed. ... show parameter log_archive_config.

How do I restore a standby database?

Recover the database using the AUTOMATIC option: SQL> ALTER DATABASE RECOVER AUTOMATIC STANDBY DATABASE; The AUTOMATIC option automatically generates the name of the next archived redo log file needed to continue the recovery operation.

How do I know if archive logs are applied to standby database?

Physical standby database select count(*) from v$archived_log; Then archive the current log on the primary database: alter system archive log current; Then, count the archived logs on the standby database again.

How do I make my standby database primary?

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

How do I open a standby database when the primary database is lost?

How to open Standby DB when Primary is lostSTARTUP MOUNT.– Check the status of DB.SELECT DB_UNIQUE_NAME, OPEN_MODE, PROTECTION_MODE, DATABASE_ROLE FROM V$DATABASE;RECOVER STANDBY DATABASE;==> CANCEL.ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH; ALTER DATABASE ACTIVATE PHYSICAL STANDBY DATABASE;ALTER DATABASE OPEN;– Check the status of DB.