We have seen preparing Primary Database for Dataguard and creating Oracle network service on both sides. In this article, we will see Physical Standby creation using RMAN duplicate database for standby command. Note: For this process, we need to copy password file from primary side to standby side under $ORACLE_HOME/dbs Database Detail : Connect to Primary Database […]
Category: DATAGUARD
Create Standby Database DUPLICATE TARGET DATABASE FOR STANDBY FROM ACTIVE DATABASE RMAN command.
We have seen preparing Primary Database for Dataguard and creating Oracle network service on both sides. In this article we will see RMAN duplicate target database for standby using active database command to prepare auxiliary database. Note: For this process, we need to copy password file from primary side to standby side under $ORACLE_HOME/dbs Database Detail […]
Oracle Net Configuration for Data Guard
In Previous article we have seen Primary Database Preparation for Data Guard Configuration. Setting the parameter on primary database for physical standby database. In this article we will see Oracle Net Configuration on Primary and Standby. Step 1 : Configure tnsnames.ora file at Production. [oracle@test1 ~]$ cat $ORACLE_HOME/network/admin/tnsnames.ora # tnsnames.ora Network Configuration File: /u01/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora # […]
Setting the parameter on primary database for physical standby database.
In the previous article, we have seen basics about the Architecture of Oracle Dataguard. Oracle Dataguard Architecture We can configure DataGuard with main three stages. Preparing Primary Database. Setting up net services between primary and standby database. Creating Standby Database. In this article, we will set the parameters on the primary database. We will see […]
Automatic Gap Detection and Resolution
Archive Gap: It means set of Archive Logs are not transmitted from Primary Database to Standby Database for some reason. The main reason could be your Network Connectivity. When network connectivity resumes data guard resumes redo data transmission from the Primary to Standby site. Causes of Archive Gaps : Network Disconnection. Standby database outage. I/O issues […]
Logical Standby Database : SQL Apply Architecture
Oracle DataGuard supports logical and physical standby databases. Logical Standby: When primary database generates any redo entries it is transferred to standby database and then redo data are converted into SQL statements and then those SQL statements are applied to standby database. To read more about Physical Standby Database Physical Standby Database: Redo Apply Architecture […]
Benefits of using Dataguard
In the previous article, we have seen basics about the architecture of Oracle Dataguard. Oracle Dataguard Architecture The main benefit of any DR server is we can say to protect Production Server’s critical data from any natural and unnatural disasters. We keep our Production Server in one place while our DR server can set up […]
Physical Standby Database: Redo Apply Architecture
In the previous article, we have seen basics about the architecture of Oracle Dataguard. Oracle Dataguard Architecture Oracle Data Guard works on physical standby and logical standby sites. Physical Standby: When primary database generates redo entries, those redo are transferred to standby database and then redo is applied to standby database. Logical Standby: When primary […]
Protection modes in Oracle Dataguard
In previous article we have gone through architecture of Oracle Dataguard and redo apply and sql apply architecture. A main role of any DR server is to protect Production Server’s critical data from any natural and unnatural disasters. Oracle Data Guard have different flavors to provide protection to Production’s critical data. That we can see […]
Oracle Dataguard Architecture
In previous article , we have seen basics about Oracle Dataguard ORACLE DATAGUARD. In this article we will see oracle dataguard architecture in depth. Let us understand above diagram with example. Let us assume our primary database is in Delhi, India and standby database is in Bangalore , India. When we have just primary database […]