oracle installation environment variables

When installing Oracle, you need to set relevant environment variables to ensure that Oracle can run normally. This article will introduce readers to how to set Oracle's environment variables.

1. Set the ORACLE_BASE environment variable

During the installation process of Oracle, you need to set the ORACLE_BASE environment variable, which will tell the directory in which the Oracle software is installed. In Linux systems, you can use the following command to set this environment variable:

$ export ORACLE_BASE=/u01/app/oracle

ORACLE_BASE The value of the environment variable should be modified according to the actual situation.

2. Set the ORACLE_HOME environment variable

It is also important to set the ORACLE_HOME environment variable. This variable indicates the installation directory of the Oracle software. In Linux systems, you can use the following command to set this environment variable:

$ export ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1

The value of the ORACLE_HOME environment variable should be modified according to the actual situation.

3. Set the PATH environment variable

The PATH environment variable contains the path where the operating system searches for executable files. In order for the Oracle software to be properly recognized by the system, its path needs to be added to the PATH environment variable. In Linux systems, you can use the following command to set this environment variable:

$ export PATH=$ORACLE_HOME/bin:$PATH

Of course, if the system does not need to use Oracle frequently, you can also add this command to the .bash_profile or .bashrc file so that this command Executed automatically on every startup.

4. Set the LD_LIBRARY_PATH environment variable

After installing Oracle, you need to set the LD_LIBRARY_PATH environment variable to ensure that the Oracle application can start normally. The LD_LIBRARY_PATH environment variable contains shared library files in the specified directory. In Linux systems, you can use the following command to set this environment variable:

$ export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH

After setting this environment variable, you can use the ldd command to test whether the Oracle application can link to the correct shared library file.

5. Set other environment variables

In addition to the above four environment variables, other environment variables also need to be set. For example, the NLS_LANG environment variable can be set to ensure that the Oracle database can correctly handle different locales. In Linux systems, you can use the following command to set this environment variable:

$ export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

Of course, the value of the NLS_LANG environment variable should also be modified based on the actual situation.

Summary

The above is how to set Oracle environment variables. When installing Oracle software, it is crucial to ensure that environment variables are configured correctly. Only by setting the environment variables correctly can Oracle be installed, configured and run normally.

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