Oracle DBMS_SCHEDULER error: ORA-27369. exit code 7 - oracle

Question

I try to run external script with Oracle Database whit DBMS_SCHEDULER.
I created a job:
BEGIN
SYS.DBMS_SCHEDULER.CREATE_JOB( job_name => 'MODPY_JOB',
job_type => 'EXECUTABLE',
job_action => 'C:\Windows\System32\cmd.exe',
job_class => 'DEFAULT_JOB_CLASS',
comments => 'Job to call batch script on Windows',
auto_drop => FALSE,
number_of_arguments => 3,
enabled => FALSE);
SYS.DBMS_SCHEDULER.SET_JOB_ARGUMENT_VALUE( job_name => 'MODPY_JOB', argument_position => 1, argument_value => '/q');
SYS.DBMS_SCHEDULER.SET_JOB_ARGUMENT_VALUE( job_name => 'MODPY_JOB', argument_position => 2, argument_value => '/c');
SYS.DBMS_SCHEDULER.SET_JOB_ARGUMENT_VALUE( job_name => 'MODPY_JOB', argument_position => 3, argument_value => 'C:\m.bat >nul');
SYS.DBMS_SCHEDULER.ENABLE( 'MODPY_JOB' );
END;
I tried to run it:
BEGIN
DBMS_SCHEDULER.RUN_JOB(
JOB_NAME => 'MODPY_JOB',
USE_CURRENT_SESSION => TRUE);
END;
I got this error:
ORA-27370: job slave failed to launch a job of type EXECUTABLE
ORA-27300: OS system dependent operation:accessing job scheduler service failed with status: 2
ORA-27301: OS failure message: No such file or directory
ORA-27302: failure occurred at: sjsec 6a
ORA-27303: additional information: The system cannot find the file specified.
ORA-06512: at "SYS.DBMS_ISCHED", line 209.
ORA-06512: at "SYS.DBMS_SCHEDULER", line 594.
ORA-06512: at line 2.
27370. 00000 - "job slave failed to launch a job of type EXECUTABLE"
*Cause: The scheduler ran into an error when the job slave tried to start
a job of type EXECUTABLE. The rest of the error stack will provide
more detailed information on what the exact problem was.
*Action: Correct the problem specified in the error stack and reschedule
the job.
I made a credential to solve the problem:
begin
dbms_scheduler.create_credential(
CREDENTIAL_NAME => 'NAME',
USERNAME => 'user',
PASSWORD => 'pswd',
WINDOWS_DOMAIN => 'localdomain');
end;
After that, I gave credential details to the job:
begin
dbms_scheduler.set_attribute('MODPY_JOB','credential_name','NAME');
end;
/
When I run try to run the job again, I got this error:
Error report -
ORA-27369: job of type EXECUTABLE failed with exit code: 7 !##--!##7##!--##!
ORA-06512: at "SYS.DBMS_ISCHED", line 209.
ORA-06512: at "SYS.DBMS_SCHEDULER", line 594.
ORA-06512: at line 2.
27369. 00000 - "job of type EXECUTABLE failed with exit code: %s"
*Cause: A problem was encountered while running a job of type EXECUTABLE.
The cause of the actual problem is identified by the exit code.
*Action: Correct the cause of the exit code and reschedule the job.
I tried to run this on Windows OS, and I got Oracle Database 12.
Where is the problem? How can I fix this and run external file with oracle?