What is Message Queuing?

Similar Questions

• Blocking message queue mechanism

  Hello

  We are in the configuration MP with masters on AIX and slaves on HP or Windows.

  On the slaves, in the ulog, sometimes we have the error message "CMDTUX_CAT:1380: ERROR: the Message Queue blocking warned childbirth, Qaddr = xxxxxx".

  She seems to happens because the BRIDGE process received a message from the network and could not place the message in the queue expected CPI (serverbacked to the top or parameters of resource system IPC too weak or too overload the machine...).

  What happens in this case?

  the request message is ignored by Smoking and Tuxedo sends an error message to the sender of the request?

  or Tuxedo place the message on another queue of the CPI of the same type?

  Thanks in advance

  TIBUS

  Hi Max,.

  The message is discarded and the sender may or may not get an error message which is the sender.  If it is a request then the request timeout message and the caller you will get an error.  However if there is a response message then the message will simply be abandoned because there is no way to tell the server that sent the response that the message has not been delivered.  Usually, this is caused by the IPC resources being set too low, even if it could be because a server is severely backed up.

  Kind regards

  Todd little

  Chief Architect of Oracle Tuxedo

• Tuxedo of Oracle and Oracle Tuxedo message queue on a virtual machine.

  Hi friends.

  How is it going?

  A small question.

  So let's go live using Oracle Tuxedo 12.1.1.0 with binding distinguished Bulletin Board and Oracle Tuxedo Message Queue 12.1.1.0 on a Virtual Machine (VMWARE) running Oracle Linux 6.2. However, we want to know if there are recommendations or mishaps in which we face before running Oracle Tuxedo on a virtual machine?

  I mean, I wonder if I have to worry about kernel parameters, settings of virtual machine or any other thing that could ruin everything.

  Another question.

  Oracle also provides certification of VMS where Tuxedo Oracle would go on top of the?

  Todd little-Oracle

  Maurice G-Oracle

  Hi Bruno.

  I'm not sure what you mean with single Liaison Bulletin Board.  I guess you mean a cluster or the MP configuration?  And is it really a clustered or just a single machine of the MP configuration?

  About the configuration, you use Tuxedo services as well or just Tuxedo Message Queue?  The biggest problem with the configuration of the BONE is the IPC resources.  If you do a-c tmloadcf on your UBBCONFIG file, it will help you to determine the required minimum IPC resources.  In general, I suggest configuration much more resources than the minimum to allow for the changes to come and for some of the parameters for heavier loads.  In particular IPC message queue settings are strongly dependent on the load.  So make sure that the maximum message size and the size of the queue are big enough for your expected workload.  You can monitor the slot load using the ipcs command.

  We don't certify virtual machine environment, but support also a long time the VM vendor to ensure compatibility, obviously VMware and Oracle VM who both do.

  Kind regards

  Todd little

  Chief Architect of Oracle Tuxedo

• What makes "new queue path" to write to the File.vi worksheet? I need a better explanation than what is given.

  You are looking for assistance.

  What makes "new queue path" to write to the File.vi worksheet?  I need a better explanation than what is given.

  Thank you.

  You can call this function without wiring to a path of the input file.  If this is the case, the function prompts the user for input file using a pop up dialog box.  If a file is selected and you press OK, it is the path of the file that is out of the function as the new path of the file.  If you press the button cancel instead of OK, the "not a path" constant is the new output file pathname.  If the function is called with a wired file path entry dialog box appears, the same path of file entry becomes the new output file path.

• What this message means?

  Hi the DELL team

  I have some message for me when I opened my

  DELL OptiPlex 755

  The first message is

  initialization of Intel (R) Boot Agent GE V1.2.50
  PXE 2.1 Build 000 (WFM 2.0)

  I don't understand, but it's something on boot

  He came and go without doing anything

  "my first start is the HARD drive.

  

  The second message is

  
  something about coverage alert

  I don't know where I need to plug this cable? !!!
  

  

  What this message means?

  Thank you
  

  

  Change your NIC integrated on w/PXE on it and it will remove the error message

  

  

• POSIX Message queues

  Hi all

  I was looking for how to use POSIX Message queues.

  According to the QNX reference, I started using mq_ * [mq_open, mq_send, mq_receive...]. But looks like I'm not something more which is always mq_open head not to say "FUNCTION NOT IMPLEMENTED".

  Can you please help me this GOLD if someone faced the same question

  Concerning

  Clement

  I got confirmation that the POSIX message queues are not available for developers of native applications BlackBerry 10. I'm sorry.

• CMDTUX_CAT:1380: ERROR: the Message Queue blocking warned childbirth

  Today, I changed a Tuxedo (server) application for product systems (a master and two slaves). Only a small change in the code. But after a period of running, there are a lot of mistakes in ULOG:
  
  CMDTUX_CAT:1380: ERROR: the Message Queue blocking warned childbirth, Qaddr = 583902
  
  And then the server died. After restarting the server, this will happen again later.
  
  I don't know why this happens? THX.

  Hi Bill,

  This happens because the BRIDGE process received a message from the network and could not place the message in the expected IPC queue. This could be because the server handles this message is saved, or the parameters of the system IPC resources are too weak. Please check the recommended actions:

  http://download.Oracle.com/docs/CD/E18050_01/Tuxedo/docs11gr1/messages/cdtux/cdtux013.html

  Kind regards
  Todd little
  Chief Architect of Oracle Tuxedo

• Synchronization in the messaging queue manager

  Hi all

  I have a program of Messaging Manager similar to the model for measuring continuously and logging (CML) queued.  Events on the front panel creating a message from queue UI"who receives the interface user Messenger Handler.  The Messenger user interface handler then sends a message to queue data"to my vi data loop.  (It is similar to the acquisition loop in the model of the CMA).

  The loop of data vi is intended to read messages sent priority from the interface user Messenger Handler, such as start, stop, terminate. When he reads the startup message, he enters with the case of boot and continually performs a task once every milliseconds X.  When sending a priority stop message, it should immediately cease to perform the tasks.

  I think it should involve the data loop continuously sending messages to perform the task.  In this way the priority message could easily slide forward and stops the process.  Is that a correct implementation?  If so, how can ensure me that the task is done at the right time?

  Thank you!

  Just to restate what Bob says...

  The time-out period is as your source of synchronization.  So, if no message has been received within the given time (negative expectations are infinite wait), then the queue returns the default value for the type of data (e.g. empty string to a string data type) and the release of "Timedout?" is set to TRUE.  You can detect this and perform any action you want your intervaled rate.

  The beauty of this Setup is that if something happened to you can handle immediately.

• Apex messaging queue will not send e-mail

  Hello

  I am running windows 7, 11.g and Apex 4.2.5

  I have an application that calls a package that sends the password resets to an apex application.  The code in this package looks like this:

  APEX_MAIL. SEND)

  p_to = > p_email,

  P_FROM = > l_from,.

  p_body = > l_body,

  p_subj = > l_subj

  );

  APEX_MAIL. PUSH_QUEUE;

  It is no longer sending eMail as before.  I don't know what has changed to make this happen.  The same problem exists if I sign in as a developer Apex and click Reset password.

  I browsed a bit small and tried the following:

  I have removed from the ACL of DBA_NETWORK_ACLS list and run the following:

  BEGIN

  DBMS_NETWORK_ACL_ADMIN. CREATE_ACL (LCD = > 'utl_mail.xml',)

  Description = > "utl_mail ACL."

  main = > 'SCHEMA_USER ',.

  IS_GRANT = > true,

  privilege = > 'connection ',.

  start_date = > systimestamp,

  End_date = > null);

  DBMS_NETWORK_ACL_ADMIN. ADD_PRIVILEGE (LCD = > 'utl_mail.xml',)

  main = > 'SCHEMA_USER ',.

  IS_GRANT = > true,

  privilege = > 'resolve. "

  start_date = > systimestamp,

  End_date = > null);

  DBMS_NETWORK_ACL_ADMIN. ASSIGN_ACL (LCD = > 'utl_mail.xml',)

  Home = > ' e-mail. Mondomaine.org ");"

  END;

  /

  COMMIT;

  BEGIN

  DBMS_NETWORK_ACL_ADMIN. (ASSIGN_ACL)

  ACL = > "utl_mail.xml"

  Home = > ' e-mail. Mondomaine.org ',.

  lower_port = > 587,

  upper_port = > 587);

  END;

  When I run the following select statement:

  SELECT the hosts, lower_port, upper_port, acl FROM dba_network_acls;

  I get the following result:

  mail. Mondomaine.org 587 587 /sys/acls/utl_mail.xml

  When I run the following select statement:

  SELECT acl,

  principal,

  privilege,

  IS_GRANT,

  To_char(start_date, 'DD-mon-YYYY') AS start_date,

  To_char(end_date, 'DD-mon-YYYY') AS end_date

  OF dba_network_acl_privileges;

  I get the following result:

  /sys/ACLs/UTL_MAIL.XML MYPRINCIPAL connect true 07-SEP-2014

  /sys/ACLs/UTL_MAIL.XML MYPRINCIPAL solve true 07-SEP-2014

  When I run the following select statement:

  SELECT DECODE)

  DBMS_NETWORK_ACL_ADMIN. (CHECK_PRIVILEGE)

  'utl_mail.xml', 'MYPRINCIPAL', 'connect'),

  PRIVILEGE 1, 'GRANTED', 0, 'DENIED', NULL)

  FROM DUAL;

  I get the following output

  GRANTED

  In the Admin of the Apex, the TB of the topic and update appear correctly in queue, but I get the error: ORA-24247: access denied by access control (ACL) of network list.  I tried to send all messages, but all that is increment the number in the column number to Send Mail.

  In Instance Apex Admin, I have the address of the appropriate SMTP host, the Port is 587 the SMTP authentication user name and password are both appropriate.  I tested the access via an e-mail account on the mail server.  The mail server requires authentication.  Also, I looked at other users / Apex_040200 / Planner / ORACLE_APEX_MAIL_QUEUE and I saw a bunch of entries every 15 minutes with the status of SUCCESSFUL operation.

  Is there anything else I need to check?

  Thanks for looking at this.

  Phil

  When the APEX MAIL runs, it runs as the APEX_040200 (or respective version).

  Add it to your list of user ACL.

  That should allow APEX reach your server.

  -Tim St.

• Ability to OTMQ - message queue

  Tuxedo Team, good afternoon!

  I have a little doubt as to the OTMQ of Tuxedo feature. The question I have is this: on the lines _SAF_ and _DQF_, created automatically when creating the queue space, not the maximum number of messages and data is limited by the size of the queue space? Or does that only, which relates to the size available in my system?

  And, where it is limited by the size of the disk queue space, can I configure a disk size of, for example, 1 TB? Or that the QueueSpace comes with a limitation on its size?

  Thank you very much

  brunno Attorre

  Hi Brunno,

  I am trying to get an exact answer, but I think that you're limited at least something like 25 times the size of the largest file on the OS of your choice.  It can actually be files of maximum size 25 x 26 or 25 x 100.  I'll see if I can get a more accurate number.  In all cases, it should be much more than to 1 TB.

  The maximum number of messages and the size of messages determine the sizes of the tables and the limits of what can be stored in the queuespace.  Please note that for non-persistent messages, you will need sufficient resources to IPC configured as the messages will all be stored in a shared memory segment.  For persistent messages, we store only the message headers in memory, and the message body is stored on the disk.

  Kind regards

  Todd little

  Chief Architect of Oracle Tuxedo

• My Canon Pixma 270 will not be printed. Not saying message queue

  A suddenly stopped printing. Does not recognize the printer is connected. Should I buy a new printer? Have re booted my laptop, printer, run again rebooted installation disc. Indicates the queue is not all that means.

  Hello

  -Did you change on your computer before the show?

  I recommend to restart the print spooler service and check if that helps.

  I see an error message about "spooler" problems

  (Not valid also for Windows Vista)

• Monitoring of the Exchange message queues

  Is there a way to track the queue of messages for Exchange 2010? We had a problem where the Send connector has become badly configured and all our email was backing. It would have been great if we had Foglight inform us when there is more than x (say 20) messages in the queue

  Hi Mark,

  We can alert out of a lot of things with Exchange. One of them, is the queue of messages. Please see the screenshot below. You can access, by modifying the policy and in the Alerts tab and create a new alert. Choose the options Exchange to access the list below.

  Thank you!

  

• What is the queue?

  I tried to reinstall a printer HP Officejet J5780 all-in-one. The central part of solution it will not install. I get a message from Microsoft stating "scanning flow component HP Cue has stopped working. Microsoft will be the search for a solution and warn me.  I don't know what they're talking about or who to contact for help.  Help!

  http://h30434.www3.HP.com/T5/scanning-faxing-and-copying/HP-cue-scanning-flow-component-has-stopped-working/m-p/18041

  http://h30434.www3.HP.com/T5/scanning-faxing-and-copying/HP-cue-scanning-flow-component-has-stopped-working/TD-p/56599

  Read the info about it in the links above of HP.

  Posters he worked with HP on this issue.

  If you can not correct info in the above links, you will need to contact HP:

  http://welcome.HP.com/country/us/en/contact_us.html

  See you soon.

  Mick Murphy - Microsoft partner

• Display messages in the message queue

  I create applications like messagelistdemo, where I get the message on a specific port, I need to display these messages in the queue of messages blackberry

  example... I hope this will solve your problem.

  sentFolder.fireElementAdded(new ApplicationMessageWrapsMessage(mes,ApplicationMessage.Status.OPENED));
  

  and

  public class ApplicationMessageWrapsMessage implements ApplicationMessage {
  
      final private Message mes;
      final private long timeStamp;
      private int status;
  
      public ApplicationMessageWrapsMessage(Message mes, int status) {
          this.mes = mes;
          this.timeStamp = System.currentTimeMillis();
          this.status = status;
      }
  ......
  

• Distributed uniforms, infinite messaging queue

  Hi again,
  After you successfully configure my Module JMS in a cluster 2 knots, I have a new problem. When you add a user, we put a MailEvent in a notification queue (uniform distributed).
  I checked the logs and the event is added only once. However after that, the NotificationMDB onMessage method is called at all times. He managed to send 15,000 emails
  in a few minutes. From what I can tell there is no exception. Also, the problem persists even after restarting the server. Someone has any idea what I am doing wrong?
  
  Thank you

  Thank you.

  I think that advice on his County is also relevant, if for some reason that you must have the transactional support for other reasons.