Basic Oracle Concepts and Programming Question:

If you want a new dataspace, you can use the CREATE TABLESPACE ... DATAFILE statement as shown in the following script:

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

SQL> SELECT TABLESPACE_NAME, STATUS, CONTENTS
2 FROM USER_TABLESPACES;
<pre>TABLESPACE_NAME STATUS CONTENTS
---------------- --------------- ---------
SYSTEM ONLINE PERMANENT
UNDO ONLINE UNDO
SYSAUX ONLINE PERMANENT
TEMP ONLINE TEMPORARY
USERS ONLINE PERMANENT
MY_SPACE ONLINE PERMANENT</pre>
SQL> SELECT TABLESPACE_NAME, FILE_NAME, BYTES
2 FROM DBA_DATA_FILES;
<pre>TABLESPACE_NAME FILE_NAME BYTES
--------------- -------------------------------- ---------
USERS ORACLEXEORADATAXEUSERS.DBF 104857600
SYSAUX ORACLEXEORADATAXESYSAUX.DBF 461373440
UNDO ORACLEXEORADATAXEUNDO.DBF 94371840
SYSTEM ORACLEXEORADATAXESYSTEM.DBF 356515840
MY_SPACE TEMPMY_SPACE.DBF 10485760</pre>
So one statement created two structures: a tablespace and a data file. If you check your file system with Windows file explorer, you will see the data file is located