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Oracle Tutorials - Keep Data Files When Tablespace Dropped

By: FYIcenter.com

(Continued from previous topic...)

What Happens to Data Files If a Tablespace Is Dropped?

If a tablespace is dropped, what happens to its data files? By default, data files will remain in OS file system, even if the tablespace they are mapped is dropped. Of course, you delete the data files using OS commands, if they are no longer needed.

Another way of deleting data files is to use the INCLUDING clause in the DROP TABLESPACE statement. Here is a SQL sample script:

SQL> CREATE TABLESPACE my_space 
  2  DATAFILE '/temp/my_space.dbf' SIZE 10M;
Tablespace created.

SQL> DROP TABLESPACE my_space INCLUDING CONTENTS
  2  AND DATAFILES;
Tablespace dropped.

With the INCLUDING CONTENTS AND DATAFILES clause, all contents and mapped data files are also deleted.

(Continued on next topic...)

  1. What Is an Oracle Tablespace?
  2. What Is an Oracle Data File?
  3. How a Tablespace Is Related to Data Files?
  4. How a Database Is Related to Tablespaces?
  5. How To View Tablespaces in the Current Database?
  6. What Are the Predefined Tablespaces in a Database?
  7. How To View Data Files in the Current Database?
  8. How To Create a New Oracle Data File?
  9. How To Create a New Tablespace?
  10. How To Rename a Tablespace?
  11. How To Drop a Tablespace?
  12. What Happens to Data Files If a Tablespace Is Dropped?
  13. How To Create a Table in a Specific Tablespace?
  14. How To See Free Space of Each Tablespace?
  15. How To Bring a Tablespace Offline?
  16. How To Bring a Tablespace Online?
  17. How To Add Another Datafile to a Tablespace?
  18. What Happens If You Lost a Data File?
  19. How Remove Data Files before Opening a Database?

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