Create tablespace issue

Question

Hi;
I wanna learn one thing...
I have oracle ebs r11i wiht 10gr2 db, and its prod instance...
Issue is like this:
I have one tablespace lets us call it XXX and it has datafile like xx1.dbf,xx2.dbf..... I want to delete those dbf becouse their each size is 40 GB, and i want to create 2 new datafile which is each 10Gb.
Would you give me steps and command how i can do that?
Thanks

Answer 1

tablespace - XXX
datafile - xx1.dbf,xx2.dbf.....
you want to delete those dbf becouse their each size is 40 GB, and i want to create 2 new datafile which is each 10Gb.
1) If you want to delete 40 GB dbf's, you will loose data.
2) If you really do not want those data, you can go ahead by dropping and creating DBF with 10 GB.
steps and command how i can do that?
I have give below sample commands, go through it thoroughly and go ahead.
Best of Luck.
=================================================================
CREATING TABLESPACES
====================
CREATE TABLESPACE userdata DATAFILE '/u01/oradata/userdata01.dbf' SIZE 100M
AUTOEXTEND ON NEXT 5M MAXSIZE 200M;
Locally Managed Tablespaces
===========================
CREATE TABLESPACE userdata DATAFILE '/u01/oradata/userdata01.dbf' SIZE 500M
EXTENT MANAGEMENT LOCAL UNIFORM SIZE 256K;
Dictionary Managed Tablespaces
==============================
CREATE TABLESPACE userdata DATAFILE '/u01/oradata/userdata01.dbf' SIZE 500M
EXTENT MANAGEMENT DICTIONARY DEFAULT STORAGE ( initial 1M NEXT 1M );
Undo Tablespace
===============
CREATE UNDO TABLESPACE undo1 DATAFILE '/u01/oradata/undo101.dbf' SIZE 40M;
Enabling Automatic Extension of Data Files
==========================================
ALTER DATABASE DATAFILE '/u01/oradata/userdata02.dbf' SIZE 200M AUTOEXTEND ON NEXT 10M MAXSIZE 500M;
SAMPLES
=======
SQL> CREATE TABLESPACE data01
2 DATAFILE '$HOME/ORADATA/u04/data01.dbf' SIZE 2M
3 EXTENT MANAGEMENT DICTIONARY;
Tablespace created.
SQL> CREATE TABLESPACE data02
2 DATAFILE '$HOME/ORADATA/u03/data02.dbf' SIZE 1M
3 EXTENT MANAGEMENT LOCAL UNIFORM SIZE 100K;
Tablespace created.
SQL> CREATE TABLESPACE indx01
2 DATAFILE '$HOME/ORADATA/u02/indx01.dbf' SIZE 1M
3 AUTOEXTEND ON NEXT 500K MAXSIZE 2M
4 EXTENT MANAGEMENT LOCAL UNIFORM SIZE 4K;
Tablespace created.
SQL> CREATE TABLESPACE ronly
2 DATAFILE '$HOME/ORADATA/u01/ronly01.dbf' SIZE 1M;
Tablespace created.
TO QUERY ALL TABLESPACES
========================
SELECT * FROM v$tablespace;
ALTER TABLESPACE
================
ALTER DATABASE DATAFILE '$HOME/ORADATA/u03/data02.dbf' RESIZE 1500K;