Flashback table does not work in 10.2?

Question

I thought that you can undo a drop and recover any table with FLASHBACK TABLE feature which comes with 10.2 by default (i.e. not special setting up is required). But I get this error when I try to do it.
ORA-00439: feature not enabled: Flashback Table
I used FLASHBACK TABLE <table name> BEFORE DROP;

Answer 1

Ahmer Mansoor wrote:
Dear Channa,
Please make sure that the parameter recyclebin is on, if not then do the following.
SQL> ALTER SYSTEM SET RECYCLEBIN=ON SCOPE=BOTH;
Well, you must check before posting a statement that whether its working or not. Your reply is actually wrong in every manner. First, the parameter is a static parameter and can't be changed by the option BOTH. It has to be spfile and will be requiring a restart of the db. Please see below,
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> alter system set recyclebin=off;
alter system set recyclebin=off
ERROR at line 1:
ORA-02096: specified initialization parameter is not modifiable with this
option
SQL> alter system set recyclebin=off scope=both;
alter system set recyclebin=off scope=both
ERROR at line 1:
ORA-02096: specified initialization parameter is not modifiable with this
option
SQL> alter system set recyclebin=off scope=spfile;
System altered.
SQL> startup force
ORACLE instance started.
Total System Global Area  263639040 bytes
Fixed Size                  1373964 bytes
Variable Size             205523188 bytes
Database Buffers           50331648 bytes
Redo Buffers                6410240 bytes
Database mounted.
Database opened.
SQL> show parameter recyclebin
NAME                                 TYPE        VALUE
recyclebin                           string      OFF
SQL>Second, there is no relation between the parameter's value being OFF/On and the message that the OP is receiving. If the parameter is set to OFF, this would be the message,
SQL> conn aman/aman
Connected.
SQL> create table test_tab(a number);
Table created.
SQL> drop table test_tab;
Table dropped.
SQL> flashback table test_tab to before drop;
flashback table test_tab to before drop
ERROR at line 1:
ORA-38305: object not in RECYCLE BIN
SQL> show parameter recyclebin
NAME                                 TYPE        VALUE
recyclebin                           string      OFF
SQL> select * from V$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL>HTH
Aman....