How to check the encoding of an Oracle database?

To view the encoding of an Oracle database, you can follow these steps:

1. Login to the command line interface on the Oracle database server or connect to the database using tools like Oracle SQL Developer.
2. Execute the following SQL statement to query the database encoding:
3. Retrieve all information from the view v$nls_parameters where the parameter matches ‘NLS_CHARACTERSET’.
4. The above query will return a result set that contains the character encoding information of the database.
5. Furthermore, you can also execute the following SQL statement to query the settings of the NLS parameters in the database:
6. Retrieve all data from the nls_database_parameters table.
7. The above query will return the settings of all NLS parameters in the database, including character set encoding.

Please note that the above method is only applicable to the encoding of the Oracle database itself. For the encoding of specific data stored in the database, you will need to check the encoding settings of the corresponding tables or columns.