How to modify the IP address of Oracle database

Oracle database is currently one of the most popular relational databases in the world. It can run on various operating system platforms, including Windows, Linux and Unix. In practical applications, we often need to modify the IP address of the Oracle database to adapt to different network environments. This article will introduce you to how to modify the IP address of Oracle database.

Step one: Check the current IP address

Before modifying the Oracle database IP address, we first need to check the current IP address. It can be viewed in the following two ways:

1. Use the ipconfig command to view:

Under Windows systems, you can use the ipconfig command to view the current server IP address. The specific steps are as follows:

a. Open the command prompt interface

b. Enter the ipconfig command and press Enter

c. View the displayed results and find the current IP address

2. Use the ifconfig command to view:

In Linux systems, you can use the ifconfig command to view the current server IP address. The specific steps are as follows:

a. Open the terminal interface

b. Enter the ifconfig command and press Enter

c. View the displayed results and find the current IP address

Step 2: Modify the listening file

When the Oracle database starts, it needs to receive connection requests from the client through the listening program. Therefore, when modifying the database IP address, we also need to modify the configuration file of the listener. The specific steps are as follows:

1. Locate the listening file:

The listening file is usually located in the $ORACLE_HOME/network/admin directory, where $ORACLE_HOME is the installation path of the Oracle software. Under Windows systems, you can view the installation path of the Oracle service through "Control Panel-Administrative Tools-Services". Under Linux systems, you can use the "find" command to query the listening file path.

2. Modify the listening file:

Open the listening file, find the "LISTENER" node, and modify the "ADDRESS" label in it. Change the IP address to the new IP address we need to modify, as follows:

LISTENER=
(DESCRIPTION_LIST=

(DESCRIPTION=
  (ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521))
  (ADDRESS=(PROTOCOL=TCP)(HOST=192.168.10.1)(PORT=1521))
)

)

3. Restart the listening program:

After completing the above modifications, you need to restart the listening program to load the new configuration file. Under Windows systems, you can use the "Service" management tool to restart the Oracle service. Under Linux systems, you can use the "lsnrctl" command to restart the listening program.

Step 3: Modify the database parameter file

After completing the above two steps, you also need to modify the parameter file of the Oracle database so that it can correctly connect to the new IP address.

1. Location parameter file:

The parameter file of Oracle database is usually located in the $ORACLE_HOME/dbs directory. There are two main parameter files, one is spfileSID.ora and the other is initSID.ora. Under Windows systems, you can view the currently used parameter file path in the properties of the Oracle service. Under Linux systems, you can use the "find" command to query the parameter file path.

2. Modify the parameter file:

Open the parameter file, find the two parameters ".db_domain" and ".db_name", and modify them. The IP address is the new IP address we need to modify. As shown below:

*.db_domain='example.com'
*.db_name='orcl'
*.local_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168. 10.1)(PORT=1521))'
*.remote_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.10.1)(PORT=1521))'

3. Restart the database :

After completing the above modifications, you need to restart the Oracle database to load the new parameter file. Under Windows systems, you can use the "Service" management tool to restart the Oracle service. Under Linux systems, you can use the "sqlplus" command to restart the database.

Summary:

The above is the method for modifying the IP address of the Oracle database. Different operating system platforms and different Oracle database versions may be different. When modifying the database IP address, you need to ensure the correctness of the relevant configuration files to avoid the database from malfunctioning due to incorrect operations. Before modifying the database IP address, it is recommended to back up the database to prevent operational errors.

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