How to change the table space of a table in Oracle

Oracle database is a widely used relational database management system. In a database, a tablespace is a container for database objects such as tables and indexes. Oracle database allows users to change the table space of a table, which is a very convenient and useful feature. This article will explore how to change the table space of an Oracle table.

1. View the table space where the table is located

The method to view the table space where the table is located in the Oracle database is very simple. You only need to use the following SQL statement:

SELECT tablespace_name FROM user_tables WHERE table_name='表名';

Among them , the table name is the name of the table in the table space where you need to view it.

2. Create a new table space

Before changing the table space of a table, we need to create a new table space first. A new table space can be created using the following SQL statement:

CREATE TABLESPACE new_tablespace DATAFILE 'new_tablespace_file_location' SIZE size_of_file;

Among them, new_tablespace is the name of the new table space, new_tablespace_file_location is the location where the new table space stores files, and size_of_file is the size of the file. What needs to be noted when creating a table space is that the data files should be placed in a suitable location to ensure sufficient storage space.

3. Move the table to a new table space

Once the new table space is created, we can move the tables that need to change the table space to the new table space. Use the following SQL statement to move a table to a new table space:

ALTER TABLE 表名 MOVE TABLESPACE 新表空间名;

Among them, the table name is the name of the table that needs to change the table space, and the new table space name is the name of the new table space.

4. Verify whether the table space change is successful

To verify whether the table space change is successful, we can run the following SQL statement again to view the table space where the table is located:

SELECT tablespace_name FROM user_tables WHERE table_name='表名';

If the result is displayed as the new table space name, the table space change is successful.

Summary:

In Oracle database, changing the table space of a table is a very convenient and useful function. By creating new table spaces and moving tables to new spaces, you can ensure that data is stored in a more suitable and secure location. When changing the table space of a table, we need to pay attention to the storage location and file size of the data file, and verify whether the change is successful in a timely manner.

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