Detailed explanation of how to build oracle dg

With the development of enterprise informatization, databases have become an important tool for data storage, management and analysis. In enterprise information systems, the reliability, stability and data security of databases are particularly important. Oracle Data Guard (hereinafter referred to as DG) is a hot backup solution for Oracle database, mainly used to achieve real-time backup and high availability of the database.

The steps to build Oracle DG are as follows:

The first step is to prepare the environment. Before starting the setup, you need to ensure that the hardware configuration, operating system version, kernel, database version, etc. of the two servers are the same. In addition, it is also necessary to ensure a reliable network connection between the two servers to ensure real-time data synchronization.

The second step is database installation. Install Oracle database on both servers, and ensure that the initialization and data file paths of the two database instances are the same.

The third step is network settings. During the establishment of DG, the primary and secondary databases need to communicate with each other, so it is necessary to set static IP addresses on the two servers and ensure that the host names are correct to ensure the reliability of communication between the two database instances.

The fourth step is to create the necessary directories. Create a backup directory and a log shipping directory on the primary database, and then synchronize the backup directory and log shipping directory to the standby database.

The fifth step is to configure the main library parameters. Configure the basic parameters of DG on the main database, such as enabling log shipping, enabling automatic archiving, etc.

The sixth step is to enable DG. Enable DG on the primary database and define the standby database as the standby machine of the primary machine. At this time, you need to specify the IP address and port number of the standby database.

The seventh step is to configure the standby database parameters. Set the relevant parameters of DG in the standby database, and pair the main machine and the standby machine. In addition, you also need to configure options for enabling the standby database and specify the location of the standby database.

The eighth step is to create a transmission log. Create a transmission log on the primary database to ensure that the transmission between the primary database and the standby database is reliable and efficient.

The ninth step is to test the host switching. After everything is ready, a host switching test can be performed. The test process includes whether the standby machine can successfully take over all services in the event of host failure to ensure the availability of DG.

The above are the steps for building Oracle DG. It should be noted that the steps should be strictly followed during the building process and the correctness and consistency of the configuration file should be ensured.

In short, the establishment of Oracle DG is of great significance to the informatization construction of enterprises. By establishing the DG solution, the high availability and real-time backup of the database can be guaranteed, and the economic and economic costs caused by data loss and downtime can be reduced. Business Risks. At the same time, for database administrators, proficiency in the operation and maintenance of DG is also one of the essential skills.

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