Simple Queue-Queue Failing with : kwqjaq: Only job queue slave can run prop

Question

I know this is a simple problem, but I can't get by it.
I have two DB servers and I just want to queue a message on a local queue and have it propagated to a remote queue.
Here are my steps:
I do this on both databases:
grant dba to johnb identified by johnb ;
connect johnb/johnb
create type my_type as object ( a number, b varchar2(2000), c varchar2(2000)) ;
--- multi consumer queue
Begin
/* This queue table should already exist */
dbms_aqadm.create_queue_table( queue_table => 'MY_QUEUE_TAB',
queue_payload_type => 'MY_TYPE',
multiple_consumers => TRUE,
comment => 'Test MultiConsumer OAQ',
compatible => '8.1.0' );
DBMS_AQADM.CREATE_QUEUE (
queue_name => 'MY_QUEUE'
, queue_table => 'MY_QUEUE_TAB' );
dbms_aqadm.start_queue('MY_QUEUE') ;
End;
-- on "Local DB" I do the following:
DECLARE
subscriber sys.aq$_agent;
BEGIN
subscriber := sys.aq$_agent( 'subscriber1' , 'JOHNB.MY_QUEUE@otmdmz2' , null);
DBMS_AQADM.ADD_SUBSCRIBER(queue_name => 'JOHNB.MY_QUEUE', subscriber => subscriber);
END;
-- scheduling propagation
BEGIN
DBMS_AQADM.SCHEDULE_PROPAGATION( queue_name => 'JOHNB.MY_QUEUE' , destination => 'otmdmz2' , destination_queue => 'JOHNB.MY_QUEUE');
END;
BEGIN
DBMS_AQADM.ALTER_PROPAGATION_SCHEDULE( queue_name => 'JOHNB.MY_QUEUE' , destination => 'otmdmz2' , destination_queue => 'JOHNB.MY_QUEUE' , latency => 1 );
END;
-- I queue with this
-- enqueue local
DECLARE
enqueue_options DBMS_AQ.enqueue_options_t;
enqueue_properties DBMS_AQ.message_properties_t;
enqueue_handle RAW(16) ;
enqueue_message JOHNB.MY_TYPE;
BEGIN
enqueue_message := JOHNB.MY_TYPE(1, 'an aq test','sending to remote db' ) ;
dbms_aq.enqueue(queue_name => 'JOHNB.MY_QUEUE',
enqueue_options => enqueue_options,
message_properties => enqueue_properties,
payload => enqueue_message,
msgid => enqueue_handle) ;
commit ;
end;
No messages move to remote DB.
I can see the message in the local queue table.
Both databases have the same init.ora parameters : job_queue_processes=1000, aq_tm_processes=1.
If I attempt to run the job I get the message in the subject line in a trace file:
kwqjaq: Only job queue slave can run propagation job, exiting
Though I am sure simple configuration issue, I cannot find a relevant note.
Thanks,
John

Answer 1

Another case of the documentation being less than precise - it happens.
Without personally having investigated, that's my understanding as well bearing in mind the following observation/explanation in the same article which seems to apply for all except 11gR2:
Although you typically use the JOB_QUEUE_PROCESSES initialization parameter to limit
the number job queue processes for DBMS_JOB and you use the Scheduler attribute
max_job_slave_processes to limit the number of job slave processes for the Scheduler,
the Scheduler is affected by the JOB_QUEUE_PROCESSES parameter.
The maximum number of job slave processes for Scheduler is determined by the lesser
of the values of JOB_QUEUE_PROCESSES and max_job_slave_processes. For example:
If JOB_QUEUE_PROCESSES is set to 10 and max_job_slave_processes is set to 20,
the job coordinator will start no more than 10 job slave processes to be shared
between DBMS_JOB and the Scheduler.
If JOB_QUEUE_PROCESSES is 20 and max_job_slave_processes is 10, the coordinator
will start up to 20 job slave processes. The Scheduler can use only 10 of these,
but DBMS_JOB can use all 20.
If JOB_QUEUE_PROCESSES is 0, DBMS_JOB is disabled, and the maximum number of
job slave processes for Scheduler is controlled by the max_job_slave_processes
Scheduler attribute.