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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Advanced queuing : dequeing from remote database
global_names is set to false on both databases
John
-----Original Message-----
From: Maertensj_at_mont.disa.mil [mailto:Maertensj_at_mont.disa.mil]
Sent: 17 February 2005 14:09
To: jdunn_at_sefas.com
Subject: RE: Advanced queuing : dequeing from remote database
You've probably got GLOBAL_NAMES set to TRUE. If you do, and don't specify a domain when you create a link, your link name will automatically append the database's default domain on to the end. Do a select * from global_name to see what your database global name is set to. Also, do a select db_link from dba_db_links to see what Oracle is actually using for your link name.
The only workarounds are to set global_names to false, or recreate your link as VAN9.SOMEDOMAIN.COM and change the corresponding tns entry. GLOBAL_NAMES is a bit of a pain to deal with, but many companies like it for security reasons.
Hope this helps...
Joey Maertens
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]
On Behalf Of John Dunn
Sent: Thursday, February 17, 2005 7:33 AM
To: Oracle-L_at_freelists.org
Cc: rjamya_at_gmail.com; ntilbury_at_vartec.co.uk
Subject: RE: Advanced queuing : dequeing from remote database
I have identified the error as :
connection description for remote database not found
The address being used in add_subscriber is OPD4678.NEW_JOB_MESSAGE_QUEUE_at_VAN9 where VAN9 is my database link
but the entry on the queue seems to trying to use
OPD4678.NEW_JOB_MESSAGE_QUEUE_at_VAN9.US.ORACLE.COM Is this the problem?
Why is it trying to use VAN9.US.ORACLE.COM ???
The entry in tnsnames.ora is simply named VAN9.
From: John Dunn [mailto:jdunn_at_sefas.com] Sent: 17 February 2005 10:46 To: 'Oracle-L_at_freelists.org' Subject: Advanced queuing : dequeing from remote database
I am experimenting with advanced queueing in Oracle 9i and am able to enqueue and dequeue messages within the same database.
However I would like to dequeue messages on a remote database via a database link.
I am confused as to what I need to set up on the remote server in order to dequeue the message.
I have set up the database link that points back to the enqueueing database, The database link works OK.
I am then trying to dequeue the message on the remote database using the following code(which is the same I use when doing this all on the same database except for the references to the database link). I get the error :
message opd4678.new_job_message_at_DEMO;
*
Any ideas what I have done wrong?
John
set serveroutput on
declare
dequeue_options dbms_aq.dequeue_options_t;
message_properties dbms_aq.message_properties_t;
message_handle RAW(16);
message opd4678.new_job_message_at_DEMO;
--message opd4678.new_job_message;
BEGIN
dequeue_options.CONSUMER_NAME := NULL;
dequeue_options.DEQUEUE_MODE := DBMS_AQ.REMOVE;
dequeue_options.NAVIGATION := DBMS_AQ.NEXT_MESSAGE;
dequeue_options.VISIBILITY := DBMS_AQ.IMMEDIATE;
dequeue_options.WAIT := DBMS_AQ.FOREVER;
dequeue_options.MSGID := null;
dequeue_options.CORRELATION := 'TEST MESSAGE';
DBMS_AQ.DEQUEUE (
queue_name => 'opd4678.new_job_message_queue_at_DEMO',
dequeue_options => dequeue_options,
message_properties => message_properties,
payload => message,
msgid => message_handle
);
dbms_output.put_line('+-----------------+');
dbms_output.put_line('| New Job |');
dbms_output.put_line('+-----------------+');
dbms_output.put_line('- Message ID := ' || message.message_id);
dbms_output.put_line('- Filename := ' || message.host_file_name);
COMMIT;
END;
/
-- http://www.freelists.org/webpage/oracle-l -- http://www.freelists.org/webpage/oracle-lReceived on Thu Feb 17 2005 - 09:21:53 CST
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