Drop Oracle Tablespace and User: Complete Guide

To delete a table space and its associated user, you can follow these steps:

1. Firstly, log in to the Oracle database with sysdba privileges.
2. 确保目标表空间和用户已经备份，以防止误操作导致数据丢失。
3. First, remove the user from the tablespace.

ALTER USER username ACCOUNT LOCK;  -- 将用户账号锁定
ALTER USER username DEFAULT TABLESPACE new_tablespace;  -- 将用户的默认表空间更改为新的表空间

1. Next, delete the user from the database.

DROP USER username CASCADE;  -- 删除用户及其对象，包括表、索引等

1. Finally, delete the target table space.

DROP TABLESPACE tablespace_name INCLUDING CONTENTS AND DATAFILES;  -- 删除表空间及其数据文件

It is important to note that deleting a tablespace and user operation is irreversible. Once the deletion is executed, the data cannot be recovered. Therefore, ensure that backups have been made before performing these operations and confirm that no important data is present in the deleted user and tablespace.