How do I clear the queue in IBM MQ?

Procedure

1. In the Navigator view, click the Queues folder that contains the queue. The queue is displayed in the Content view.
2. In the Content view, right-click the queue, then click Clear Messages…
3. Select the method to use to clear the messages from the queue:
4. Click Clear.
5. Click Close to close the dialog.

How do I clear the command queue?

Command Method

1. Select Start.
2. Type Command .
3. Right-click “Command Prompt” and select “Run as administrator“.
4. Type net stop spooler then press “Enter“.
5. Type del %systemroot%\System32\spool\printers\* /Q then press “Enter“.
6. Type net start spooler then press “Enter“.
7. The print queue on your Windows should now be cleared.

How do you stop a queue in MQ?

On Windows and Linux, to stop the queue manager by using IBM MQ Explorer, complete the following steps:

1. Open the IBM MQ Explorer.
2. Select the queue manager from the Navigator View.
3. Click Stop. The End Queue Manager panel is displayed.
4. Select Controlled, or Immediate.
5. Click OK.

How do you clear the MQ queue from the script or program?

Have you ever wanted to clear a MQ queue? A quick and easy way to do it is to use runmqsc’s CLEAR QLOCAL command. This method works very well as long as no application has the local queue opened for input.

How do I add and remove elements from my queue?

Insertion and deletion in queues takes place from the opposite ends of the list. The insertion takes place at the rear of the list and the deletion takes place from the front of the list. Insert operation is called push operation. Insert operation is called enqueue operation.

How do you stop a queue?

There are three ways to stop a queue manager: a quiesced shutdown, and immediate shutdown, and a preemptive shutdown. Use the endmqm command to stop a queue manager. Note: You must use the endmqm command from the installation associated with the queue manager that you are working with.

What is Quiescing state in MQ?

The QUIESCE option attempts to end the current batch of messages before stopping the channel. FORCE. The FORCE option attempts to stop the channel immediately and might require the channel to resynchronize when it restarts because the channel might be left in doubt. TERMINATE.

How do you resolve uncommitted messages in MQ?

These uncommitted messages can be handled using “dspmqtrn” and “rsvmqtrn” command. In some situations the uncommitted transactions remain or the keep increasing on the queue even after resolving in-doubt transactions.

What are the five basic operations on a queue?

Basic Operations of Queue

• Enqueue: Add an element to the end of the queue.
• Dequeue: Remove an element from the front of the queue.
• IsEmpty: Check if the queue is empty.
• IsFull: Check if the queue is full.
• Peek: Get the value of the front of the queue without removing it.

Which data structure allows delete?

Is LinkedList concurrent?

concurrent package. It was introduced in JDK 1.5. It is used to implement Queue with the help of LinkedList concurrently. It is an unbounded thread-safe implementation of Queue which inserts elements at the tail of the Queue in a FIFO(first-in-first-out) fashion.

What’s the best way to clear a MQ queue?

Have you ever wanted to clear a MQ queue? A quick and easy way to do it is to use runmqsc’s CLEAR QLOCAL command. This method works very well as long as no application has the local queue opened for input. If you need to clear a queue on Linux, Unix, Windows or IBM i (OS/400) then start runmqsc and issue the following MQSC command:

How to clear the qlocal queue in z / OS?

Use the MQSC command CLEAR QLOCAL to clear the messages from a local queue. 1 Valid only on z/OS®. You must specify which local queue you want to clear. The queue has uncommitted messages that have been put on the queue under syncpoint

Can you use the wildcard character in MQ?

You can’t use the wildcard character (*) when altering MQ Objects. Instead you have to specify the exact object you want to alter and that object has to exist. This is the reason your command fails (as it is looking for an object called * which does not exist.