TIP 01: Default User Tablespace in 10g by Joel Pèrez

Question

Hi OTN Readers!
Everyday I get connection on Internet and one of the first issues that
I do is to open the OTN main page to look for any new article or any
new news about the Oracle Technology. After I open the main page of
OTN Forums and I check what answers I can write to help some people
to work with the Oracle Technology and I decide to begin to write some
threads to help DBAs and Developers to learn the new features of 10g.
I hope you can take advantage of them which will be published here in
this forum. For any comment you can write to me directly to : [email protected]
Please do not replay this thread, if you have any question related to
this I recommend you to open a new post. Thanks!
The tip of this thread is: DEFAULT USER TABLESPACE
Joel Pérez
http://otn.oracle.com/experts

Answer 1

Step 9: At the step 5 We changed the default tablespace of the database but there is an
important detail that We have to realize. That detail is the following : when you change
the default tablespace of the database. The users were using it are move to store its objects
in the new default tablespace but the objects that were stored in the original tablespace
remain there. Let's go to look at it:
Here We are connected to the database as system user
SQL> show user
USER is "SYSTEM"Let's go to get connection as new_user user in order to create a table
SQL> conn new_user/new_user@base1
Connected.
Creating a table in the schema NEW_USER
SQL> create table t1_new_user(c1 number);
Table created.As you can see that table is stored in the default tablespace assigned to the user new_user
SQL> select TABLE_NAME, TABLESPACE_NAME from dba_tables
  2  where owner='NEW_USER';
TABLE_NAME                     TABLESPACE_NAME
T1_NEW_USER                    USERS1Now, We are going to perform the change at the database level regarding the default tablespace
SQL> alter database default tablespace TEST;
Database altered.Now, Let's go to see where the object is stored
SQL> select TABLE_NAME, TABLESPACE_NAME from dba_tables
  2  where owner='NEW_USER';
TABLE_NAME                     TABLESPACE_NAME
T1_NEW_USER                    USERS1The object remain in the original tablespace assigned to the user new_user.
Here We can realize that the change was successful but the table still remain in the original
tablespace. You will have to move manually the objects to a new default tablespace.
SQL> select USERNAME, DEFAULT_TABLESPACE from dba_users
  2  where username='NEW_USER';
USERNAME                       DEFAULT_TABLESPACE
NEW_USER                       TESTJoel Pérez
http://otn.oracle.com/experts