SQL & PL/SQL :: Recycle Bin Not Working

I went through the link given in orafaq and tried to work on my system but the things did not work.

SQL> select *
2 from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production

SQL> ALTER SYSTEM SET recyclebin = ON;

System altered.

SQL> SELECT Value FROM V$parameter WHERE Name = 'recyclebin';

VALUE
--------------------------------------------------------------------------------
ON

SQL> CREATE TABLE TEST_RBIN(VAL NUMBER);

Table created.

SQL> INSERT INTO TEST_RBIN(VAL) VALUES(10);

1 row created.

SQL> COMMIT;

Commit complete.

SQL>
SQL>
SQL> DROP TABLE TEST_RBIN;

Table dropped.

SQL> SHOW RECYCLEBIN;
SQL> SELECT * FROM USER_RECYCLEBIN;

no rows selected