How to change the file name of a tablespace in Oracle?

To change the file names of Oracle table spaces, you can follow these steps:

1. Log in to the database with sysdba privileges using Oracle database clients such as SQL*Plus or SQL Developer.
2. Check the current file names of the tablespace. Run the following query statement:
3. Retrieve the tablespace_name and file_name columns from the dba_data_files table.
4. This will display the file names of all current tablespaces.
5. Please identify the tablespace file name that needs to be modified and prepare a new file name.
6. Execute the following ALTER DATABASE command to modify the tablespace file names:
7. Rename the file ‘old filename’ to ‘new filename’ in the database.
8. In this case, the “old file name” is the name of the tablespace file that needs to be modified, and the “new file name” is the new file name.
9. Confirming that the modification has been successfully completed. Run the following query statement:
10. Show the tablespace name and file name from the database data files.
11. Check to see if the results display the new file name.
12. If the tablespace file name is used to create database objects (such as tables, indexes, etc.), the definitions of the relevant objects also need to be updated. This can be done by using the ALTER statement to modify the definitions of the objects and replace the old file name with the new one.
13. For example, if a table is using the tablespace, you can execute the following ALTER statement to modify the table’s definition.
14. Change the tablespace of the table to a new tablespace.
15. table_name is the name of the table to be modified, and new_tablespace is the new tablespace needed for the table.

Before changing the file name of the tablespace, make sure to backup the database and proceed with caution in the production environment to prevent data loss or irreparable damage.