OCISubscriberRegister for Advanced Queuing

Hello all,
I tried to run the OCI example for call back function.
The example crashed at OCISubscriberRegister with an error message as follows:
ORA-03120: two-task conversion routine: integer overflow.
I've tried two different examples, both of them came back with the same error message.
The examples are listed on:
http://technet.oracle.com/doc/server.815/a68005/03_adq2f.htm#66694
http://oradoc.photo.net/ora81/DOC/server.815/a67846/new_adva.htm#434452
The examples should call back a function when a user logon to the database.
Any opinions will be greatly appreciated.
Thank you in advance,
null

Oracle webservice 10.1.3 allows one to create service based on an AQ, where the subscribe operation would serve your purpose.

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Is there any x64 support for Advanced Queuing?

Is there any current x64 ODP.NET driver version that supports AQ? I know that the 11.1.0.7.20 version supports it but that will only run in 32bit mode. Is there anything for x64 available yet? If not is there an ETA?

11.2 has it.
There's an 11.2 odac bundle beta, or you can use the production version of the 11.2 full cllient.
Hope it helps,
Greg
Edited by: gdarling on Apr 23, 2010 9:48 AM
Oops, the beta is just 32 bit. Full client should have what you need.

Web Service for Advanced Queuing

Hi,
Is it possible to subscribe to AQ topic through WebService interface?

Oracle webservice 10.1.3 allows one to create service based on an AQ, where the subscribe operation would serve your purpose.

Request for Comments and Experiences with Streams Advanced Queuing

Hi,
I would like to get some feedback about what your experiences with Streams Advanced Queuing. What do you like about it? What don't you like? How do you use it? What features would you love to see in it? Please post to the forums. Thanks!

I love the new homeless Instant Client! I wish we had it years ago. Some comments:
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2) I heartily agree with the request that the new client install without requiring the normal Oracle installer. It's just too bloated for easy deployment. I'd rather hand install the files than to have to use that. Also, .zip not .jar please.
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Documentation for Oracle Advance Queue

Any pointer to Documentation for Oracle Advance Queue?
Thanks In Advance
priyadarshi.

hello,
here it is
http://download.oracle.com/docs/cd/B10501_01/appdev.920/a96587/qintro.htm
http://www.oracle.com/technology/sample_code/tech/dataint/index.html
both will be useful
thanks and regards
VD

Advanced Queuing for Oracle / Dequeue failed

Hi *,
I'm using Oracle Advanced Queuing and OC4J with some MDBs. Unfortunately sometimes I have following exception:
03-05-21 10:29 Error listening to 'USER_QUEUE'
oracle.jms.AQjmsException: JMS-120: Dequeue failed
     at oracle.jms.AQjmsError.throwEx(AQjmsError.java:283)
     at oracle.jms.AQjmsConsumer.dequeue(AQjmsConsumer.java:2034)
     at oracle.jms.AQjmsConsumer.receiveFromAQ(AQjmsConsumer.java:981)
     at oracle.jms.AQjmsConsumer.receiveFromAQ(AQjmsConsumer.java:918)
     at oracle.jms.AQjmsConsumer.receive(AQjmsConsumer.java:834)
     at com.evermind.server.ejb.MessageDrivenHome.run(MessageDrivenHome.java:905)
     at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:797)
     at java.lang.Thread.run(Thread.java:479)
All messages hang in my queue with READY state. I really don't know what is happening.
I have observed that when I run my MDB, but on the different machine, one message is consumed and the same exception arises.
Why Oracle cannot run dequeue process correctly?
best regards
Maciek

We had similar problems. Mostly the cause was incorrect message type (other than AQ$_JMS..., i. e. ancestor of "message" class) or incorrectly filled body of a message. For example, there seems to be a bug in AQ$_JMS_TEXT_MESSAGE object: you have to set at least one of varchar2 or CLOB in body of message. Otherwise, dequeue will fail, JMS assumes there is some text inside.
We are using 8i and 9i databases and messages are created using plain constructors (not methods from 9i, since code has to run on either version). I cannot recall any troubles using methods from 9i during researching, but there might be a bug somewhere.
Myrra

Advance Queue - Define schema for Events Data

Hi All,
we want to implement oracle Advanced Queue within BPEL processes. and i want to create a Publish Event document.
now I want to define schema for events data. can anybody point me to such schema ?
Thanks,
pp

Hello,
We are using Jdeveloper 10.1.3 / oracle 10g / Oracle Fusion Middleware (BPEL) 10g and want to create a sample POC using BPEL process, any kind of Publish Event sample schema, Publish Event sample XML, Advance Queue adapter in jdev and be able to publish (enqueue) messages on sample AQ and be able to consume those messages (dequeue) by subcriber.
as you see, this is just a sample POC .... nothing concrete as yet.
I searched "Oracle By Example" for such sample code or zip that i can download. but did not find one.
Can you point me to such sample code, i can open in jdeveloper and test ?
thanks
pp

Nested Tables and Advanced Queues- Please Help.

How do i work with NestedTable type and Advanced Queue.
I have done the following
I have Oracle 8.1.7 enterprise edition.
create type myType as TABLE OF varchar(32);
create type myObject as OBJECT (
id int,
myt myType);
DECLARE
BEGIN
dbms_aqadm.create_queue_table(
queue_table => 'my_queue_table',
multiple_consumers => TRUE,
queue_payload_type => 'myObject',
compatible => '8.1.3'
END;
The Nested Table and Object are created successfully.
but the queue is not created.
I get the following message.
DECLARE
ERROR at line 1:
ORA-22913: must specify table name for nested table column or
attribute
ORA-06512: at "SYS.DBMS_AQADM_SYS", line 2012
ORA-06512: at "SYS.DBMS_AQADM", line 55
ORA-06512: at line 3
I know how to specify the nested table storage clause for
create table statement, but there is no provision for
it in the create_queue_table procedure.
Any help will be greately appriciated.
i have already created and tested aqs with simple data types,
also i have created simple tables with nested table type
elements.
but the combo of Nested tables and AQ is not working.
thanks in advance.

Hi Francois. Thank you very much for your reply, but it seems that i still get errors. So let me tell what i have done.
As you suggested me: i have done a block based on a sub-query for the nested-table:
'select courses from department where name= :department.name'.
In the master block(department) i have the when-new-record-instance trigger:
Declare
LC$Req varchar2(256);
Begin
LC$Req := '(select ns.courses from table
( select courses from department where name = ''' || :DEPARTMENT.name || ''' ) ns )';
Go_block('block11');
Clear_Block ;
Set_Block_Property( 'block11', QUERY_DATA_SOURCE_NAME, LC$Req ) ;
Execute_query ;
End ;
Now the errors i receive, this time in the runtime mode are:
- FRM-41380: Cannot set the blocks query data source
-FRM-41003: This function cannot be performed here.
Since it seems that you know how to work with the nested table i would really appreaciate your help. I am new in the nested table and if you could give an ex with my tables it would be great.
Thank you in advance.

Java advanced queue MDB class usage

Hello,
Loads of questions about JMS AQ and MDB.
I have not found anything that tells you how to use the oracle.jms classes within a MDB's directly. Do I just cast the message to a AQMessage and retrieve from there?
I have found plenty of documentation about using the oracle.jms classes. Ive found a lot of information about using advanced queues and enqueing and dequeuing to them in Java. I have found information about MDBs and how to use them as a regular service ie: using TextMessage
Is there a simple document describing MDB oracle AQ classes? I have looked through umpteen million Oracle documents to no avail.
Is there an interface for MDB in the Oracle AQ classes which has an onMessage() method which I can implement taking in oracle.jms classes?
When processing a message that I would like to put on another queue do I call the AQ classes to enqueue a message and set its attributes that way or do I use the JMS classes and their methods to do that?

http://download-west.oracle.com/docs/cd/A97688_12/generic.903/a97677/mdb.htm#1013265 should get me most of the way there.

Propagation between queues in Oracle Advanced Queuing

We would like to connect two queues that reside in different database schemas/instances.
We try to use the propagation feature of Oracle to achieve this.
The queue-type is the same for both queues.
Enqueuing is done with a recipient list in order to set multiple local subscribers for the messages that are put onto the queue.
We would like to propagate between queues without changing the applications that write to originating queue and the other applications that read from the target queue.
During our research we only found ways where we need to change the application that writes onto the queue, which is not acceptable for us. Also the list of subscribers needs to be different based on the message.
Therefore I have the following question:
- is there a way to set up propagation between queues in a way where we don't need to modify the sending application?
- if not, is there a different way to connect two queues via a subscriber/consumer?

Oracle8i for Linux does have AQ, although I haven't evaluated it
yet. If you're still having trouble with the install, make sure
you get the patch. A quicker and easier way to get Oracle8i up
cheaply for evaluation is to download the NT version. I'm
evaluating Oracle8i for both Linux and NT and the NT version is
more stable.
I would really appreciate hearing about your experiences with AQ
on Oracle8 (8.0.4.3). I have several projects that we have been
considering using AQ with. Please send me an email and tell me
what problems / work-arounds you found.
Christian Schroeder (guest) wrote:
: Hello,
: I still haven't managed to install 8i completely
: (files with zero-length, wrong permissions, wrong JVM, ...),
: anyway... -))
: We are using Oracle Advanced Queuing under 8.0.4.3 on AIX in
: a project at my company and I wondered if AQ is in 8i for
Linux?
: I really would like to evaluate it at home, since the AIX
: AQ version has some bugs and restrictions which I really need
to
: get around.
: My idea is to get 8i for AIX, but I wouldn't buy it if the
: queuing is still unstable.
: The 8.0.4 documentation states that one will get AQ in the
: Enterprise Edition with message-type 'RAW' and the Objects
Option
: will add full functionality if also purchased. I didn't find
: any comments on AQ in the installation guide.
: Regards,
: Christian
null

Oracle Advanced Queuing - Propagation problem - 11g

Hi,
I have a problem when propagation messages between queues. When the message is propagated, it stays on the source queue with READY state.
I have created two queues on 11g with a propagation rule that any message from queue A are sent to queue B. My problem is that the message from the source queue stays in the source queue even after propagation, which isn't what I was expecting. The problem doesn't occur if the queues are on a different database. This problem only happens if the queues are on the same database.
the script I use is this:
For USERB (which has the destination queue)
create type EVENT_MESSAGE as object (
eventsource VARCHAR2(30),
eventname VARCHAR2(255),
eventid NUMBER(19,0),
message CLOB
DECLARE
an_agent sys.aq$_agent;
BEGIN
-- create the publish/subscribe queue table
dbms_aqadm.create_queue_table(
queue_table => 'DESTINATION_QUEUE_TABLE',
queue_payload_type=>'EVENT_MESSAGE',
sort_list => 'ENQ_TIME',
message_grouping => DBMS_AQADM.NONE,
multiple_consumers=>true
-- create the queue
dbms_aqadm.create_queue(
queue_name => 'DESTINATION',
queue_table => 'DESTINATION_QUEUE_TABLE',
queue_type => DBMS_AQADM.NORMAL_QUEUE,
max_retries => 5
dbms_aqadm.create_aq_agent(agent_name =>'DEQUEUE_AGENT');
an_agent := sys.aq$_agent('DEQUEUE_AGENT', null, null);
dbms_aqadm.enable_db_access(
agent_name => 'DEQUEUE_AGENT',
db_username => 'USERB'
dbms_aqadm.add_subscriber(
queue_name => 'DESTINATION',
subscriber => an_agent,
queue_to_queue => FALSE,
delivery_mode => DBMS_AQADM.PERSISTENT
-- start the queues
dbms_aqadm.start_queue('DESTINATION');
END;
For USERA
create type EVENT_MESSAGE as object (
eventsource VARCHAR2(30),
eventname VARCHAR2(255),
eventid NUMBER(19,0),
message CLOB
BEGIN
-- create the publish/subscribe queue table
dbms_aqadm.create_queue_table(
queue_table => 'SOURCE_QUEUE_TABLE',
queue_payload_type=>'EVENT_MESSAGE',
sort_list => 'ENQ_TIME',
message_grouping => DBMS_AQADM.NONE,
multiple_consumers=>true
-- create the queue
dbms_aqadm.create_queue(
queue_name => 'SOURCE',
queue_table => 'SOURCE_QUEUE_TABLE',
queue_type => DBMS_AQADM.NORMAL_QUEUE,
max_retries => 5
-- start the queues
dbms_aqadm.start_queue('SOURCE');
-- create the propagation
dbms_aqadm.add_subscriber(queue_name => 'SOURCE',
subscriber => sys.aq$_agent('DEQUEUE_AGENT','USERB.DESTINATION',null),
queue_to_queue => true);
dbms_aqadm.schedule_propagation(queue_name => 'SOURCE',
start_time => sysdate,
latency => 25,
destination_queue => 'USERB.DESTINATION');
END;
When I enqueue a message to the source on USERA with this:
declare
rc binary_integer;
nq_opt dbms_aq.enqueue_options_t;
nq_pro dbms_aq.message_properties_t;
datas EVENT_MESSAGE;
msgid raw(16);
begin
nq_pro.expiration := dbms_aq.never;
nq_pro.sender_id := sys.aq$_agent('ENQUEUE_AGENT', null, null);
datas := AGEAS_EVENT_MESSAGE('message','eventname',1,null);
dbms_aq.enqueue('SOURCE',nq_opt,nq_pro,datas,msgid);
end;
The message is propagated to the destination queue, no problem, but the message state on the source queue is kept as ready. I would have expected it to be marked as processed and disappear from the queue table.
When I look at the AQ$_SOURCE_QUEUE_TABLE_S the I see these records:
     QUEUE_NAME     NAME     ADDRESS     PROTOCOL      SUBSCRIBER TYPE
     SOURCE     (null)     "USERB"."DESTINATION"@AQ$_LOCAL     0     1736
     SOURCE     DEQUEUE_AGENT     "USERB"."DESTINATION"     0     577
Can anyone help?

I was talking about following oracle documentations:
Oracle Database 11g: Advanced Queuing (Technical Whitepaper)
Streams Advanced Queuing: Best Practices (Technical Whitepaper)
Oracle Streams Advanced Queuing and Real Application Clusters: Scalability and Performance Guidelines (Technical Whitepaper)
They are available at.. http://www.oracle.com/technetwork/database/features/data-integration/default-159085.html

Advanced Queues Snapshot too old error

I am using the advanced queues to submit work for parallel processes running through the Oracle Job Queue.
I have attempted running anywhere from 1 to 5 simultaneous processes (in addition the the process which submits them to the Oracle job queue and populates the advanced queues) and I am getting sporadic Snapshot too old errors when the other processes are attempting to dequeue. The Advanced queues are populated before the other processes are submitted to the job queue, so I don't see that there could be conflicts between one process enqueuing while another is dequeuing.
The reason I am attempting this is to try and gain some performance by running processes in parallel.
Has anyone else had problems like this? Is this a bug in Oracle 8.1.6? Is there a parameter setting I need to adjust? Are there any suggestions for getting around this problem?

I don't know what version of the database you are running? I'm only using 8.1.7.4. But where I come from, you add datafiles to the tablespace, not the rollback segment.
alter tablespace rollback
add datafile '<blah, blah>'
size 147m
autoextend on next 100m maxsize 2047m;
Make sure that you have a suitable number of rollback segments that are well-sized extents. But mostly, listen the Tom Best, and try and introduce some best practices (no pun intended) to reduce the likelihood of this situation arising.

Advanced queue in Oracle9i Standard Edition One

Hi,
Is advanced queuing available in the Standard Edition One for 9i?
Thanks,
Gloria

Hi!
i think, that the SE One is only an edition for 10g. in 10g and 9i advanced queuing is included in every available edition. Please refer to:
http://www.oracle.com/technology/products/database/oracle10g/pdf/twp_general_10gdb_product_family_0104.pdf
and
http://www.oracle.com/technology/products/oracle9i/pdf/9idb_rel2_prod_fam.pdf
hope tat helps
AndrÃ©

Dequeue from Advanced Queue

Hi All,
I have used the DBMS_AQ package provided dequeue functionality for dequeuing msgs from my advanced queue. Now there is a job which dequeue the items from this queue and sends out email. Now what is happening is the job picks up an item from the advanced queue for dequeuing and sends out email, but the item which is picked up still remains in the queue and is not dequeued. As the job runs every minute and polls the queue, it again picks up the same queue item and sends the email. This process repeats for 5-6 times and then the queue message expires. My requirement is that, the job should dequeue the item from the queue and just send email once. Please can anyone suggest what could be the solution to this problem?

10g is not a version number it is a marketing label that applies equally to 10.1.0.2 and 10.2.0.4 and a lot of versions in between.
That said I know this demo I wrote works in all versions of 10.2:
http://www.psoug.org/reference/aq_demo1.html
Compare it to what you are doing.

Advanced Queuing in Oracle Forms

Hello! I'm trying to use the Advanced Queuing in Oracle Forms. I do it, that's for this manual:
http://st-curriculum.oracle.com/obe/forms/11g/formschataq/formschataq.htm
All objects created in the database successfully! However, in the section "Building the Forms Application to Interact with AQ", My form does not catch the event. Trigger WHEN-EVENT-RAISED in "Event" not called. The same thing happens when testing forms for chat.
Who have successfully used the "Advanced Queuing", tell me please, this example is correct? If no, can give a correct example? If yes, Maybe I did not set any settings?
I use Forms 1.1.2
Thank you!

Michael Ferrante (Oracle) wrote:
Enable at least level 2 tracing in the console. You should see an exchange occur every 2 seconds (2000ms). If you do not see this then your MAX_WAIT is not being read. To enable trace level 2, open the console and left click in the text area of it. Then press the number 2 on the keyboard just above the letters Q and W. Do not use the number pad, as this will not work.If enable Level 2 in JavaConsole, nothing is written there. However, when the level 3, then every 2 seconds is displayed in the console this line:
network: Connecting http://localhost:7001/forms/lservlet;jsessionid=LvhyQ0QNg5KkJ17vnch3pQSMT6Z00B16yVr7m64npFKTKp1pBBjv!656070063 with proxy=DIRECTI changed the file formsfeb.cfg, set MaxEventWait = 5000. All restart, And a similar message is displayed every 5 seconds in the console.
network: Connecting http://localhost:7001/forms/lservlet;jsessionid=r31zQ0TLpHxK3kjBqMBk0tvYf9hn6wn6sGpKRppTvSX1f70pv0GS!571608984 with proxy=DIRECT
network: Connecting http://localhost:7001/ with proxy=DIRECT

OCISubscriberRegister for Advanced Queuing

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