Is there any limitation to create file watcher in oracle 11g scheduler

Question

Hi,
Below are the version details where I am working.
Oracle Database 11g Express Edition Release 11.2.0.2.0 - Production
PL/SQL Release 11.2.0.2.0 - Production
"CORE 11.2.0.2.0 Production"
TNS for 32-bit Windows: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
I tried to create a file watcher. But I got below error.
begin
    dbms_scheduler.create_file_watcher
      (file_watcher_name => 'file_watcher',
       directory_path => 'F:\Aswadhati\workfile',
       file_name => 'example.txt',
       credential_name => 'external_user',
       enabled => TRUE);
end;
Error report:
ORA-03001: unimplemented feature
ORA-06512: at "SYS.DBMS_ISCHED", line 3702
ORA-06512: at "SYS.DBMS_SCHEDULER", line 2632
ORA-06512: at line 2
03001. 00000 -  "unimplemented feature"
*Cause:    This feature is not implemented.
*Action:   None.

Answer 1

In the enterprise edition I am able to create all the below objects.But The job is not running after file arrival.
Could you please me in this case also.
BEGIN
  DBMS_SCHEDULER.create_credential(
    credential_name => 'LOCAL_CREDENTIAL',
    username        => 'upncommon',
    password        => '*******');
END;
BEGIN
  DBMS_SCHEDULER.create_file_watcher(
    file_watcher_name => 'test_file_watcher',
    directory_path    => '/home/upncommon/pub',
    file_name         => 'sample2.sh',
    credential_name   => 'LOCAL_CREDENTIAL',
    destination       => NULL,
    enabled           => FALSE);
END;
BEGIN
  DBMS_SCHEDULER.create_program(
    program_name        => 'file_watcher_test_prog',
    program_type        => 'STORED_PROCEDURE',
    program_action      => 'PROC_SCH',
    number_of_arguments => 1,
    enabled             => FALSE);
END;
BEGIN
  DBMS_SCHEDULER.define_metadata_argument(
    program_name       => 'file_watcher_test_prog',
    metadata_attribute => 'event_message',
    argument_position  => 1);
END;
BEGIN
  DBMS_SCHEDULER.create_job(
    job_name        => 'file_watcher_test_job',
    program_name    => 'file_watcher_test_prog',
    event_condition => NULL,
    queue_spec      => 'test_file_watcher',
    auto_drop       => FALSE,
    enabled         => FALSE);
END;
BEGIN
  DBMS_SCHEDULER.set_attribute('file_watcher_test_job','parallel_instances',TRUE);
END;
EXEC DBMS_SCHEDULER.enable('test_file_watcher');
EXEC DBMS_SCHEDULER.enable('file_watcher_test_prog');
EXEC DBMS_SCHEDULER.enable('file_watcher_test_job');