In Oracle database, in which directory are Ora files stored?

In the Oracle database, the Ora file is stored in the $ORACLE_HOME directory of the Oracle database. $ORACLE_HOME is the home directory of the Oracle database software and the installation path specified when installing the Oracle database. The Ora file is the parameter file of the Oracle database, used to store the configuration information and initialization parameters of the database. The following code examples will be used to illustrate the specific location and content of the Ora file.

First, log in to the operating system of the Oracle database server and find the specific path of $ORACLE_HOME through the following command:

echo $ORACLE_HOME

Then, use a file browser or command line to enter the $ORACLE_HOME directory, you can See a folder named "database", the Ora file is saved in this folder. In this folder, there are two important Ora files: init.ora and spfile.ora.

The init.ora file is the traditional parameter file of the Oracle database and can be opened, viewed and edited through a text editor. It contains various parameter settings for the database instance, such as SGA size, log file location, character set, etc.

Another important Ora file is spfile.ora, which is the server parameter file of the Oracle database and stores the dynamic parameters of the database instance in binary format. We can view the contents of the spfile.ora file through SQL commands:

SHOW PARAMETER spfile;

In addition, important database files such as the control files and archive log files of the Oracle database are also stored in the $ORACLE_HOME/dbs directory.

To sum up, the Ora file is saved in the $ORACLE_HOME/database directory of the Oracle database, including important parameter files such as init.ora and spfile.ora. By viewing these Ora files, we can understand and configure various parameter settings of the Oracle database to better manage and maintain the database system.

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