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| vijeer2001 |
 Posted: Tue Apr 20, 2010 9:06 pm Post subject: Enumerating all local queues of a queue manager |
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Novice
Joined: 08 Mar 2010
Posts: 16
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| I'm trying to write a simple tool for monitoring the state of a Queue Manager. One of the things I'd like to monitor is the current queue depth of each local queue. I haven't been able to find a way to programmatically enumerate all of the local queues on a particular Queue Manager. How can this be done in c# |
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| Vitor |
| Posted: Tue Apr 20, 2010 9:53 pm Post subject: Re: Enumerating all local queues of a queue manager |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| vijeer2001 wrote: |
| I'm trying to write a simple tool for monitoring the state of a Queue Manager. |
What prompted you to reinvent this particular wheel?
| vijeer2001 wrote: |
| I haven't been able to find a way to programmatically enumerate all of the local queues on a particular Queue Manager. How can this be done in c# |
If you're trying to enumerate the queue objects that belong to a queue manager, you can't. You'll need to use PCF to assemble a list of local queues then parse the list to obtain the details.
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| bruce2359 |
| Posted: Wed Apr 21, 2010 5:28 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9470
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| I'm trying to write a simple tool ... haven't been able to find a way... |
Have you read through the MQSC manual for commands that can/will return lists of objects based on speciric criteria?
Have you read through the APR and APG for MQ calls that might provide you queue depth?
What have you tried? What were the results?
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| beth_carlin |
| Posted: Fri Jul 02, 2010 2:18 pm Post subject: |
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Acolyte
Joined: 08 Jun 2004
Posts: 64
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// in Java........
MQQueueManager qMgr = new MQQueueManager(qMgrName);
int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_INQUIRE;
MQQueue inputQueue = qMgr.accessQueue(queueName, openOptions, null, null, null);
int queueDepth = inputQueue.getCurrentDepth(); |
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| beth_carlin |
| Posted: Fri Jul 02, 2010 2:37 pm Post subject: Re: Enumerating all local queues of a queue manager |
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Acolyte
Joined: 08 Jun 2004
Posts: 64
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I think from C program, call a script which contains
runmqsc qmrname < ql.mqsc > ql.txt
in file ql.mqsc
put this entry
dis ql(*)
....
parse
...
return
....
the C program can enumerate from ql.txt
Good luck and pls let me know |
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| fjb_saper |
| Posted: Fri Jul 02, 2010 5:13 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Both approaches are equally inadequate for what the original poster asked for.
A better approach is to make the call in pcf and return the queues with curdepth > 0... (see Vitor's post above...)
Support pack ms0b will help you to do that in java. You might want to look into this as a source of good information.
Have fun 
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| zpat |
| Posted: Sat Jul 03, 2010 1:46 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| MQINQ can get current depth without using PCF. |
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| fjb_saper |
| Posted: Sat Jul 03, 2010 3:15 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| zpat wrote: |
| MQINQ can get current depth without using PCF. |
Sure but you need 1 call per queue name. Not really suited for a monitoring app. You should use the single pcf call that will return all queues with curdepth gt 0). It is also valid on zOS for MQ V6 and above...
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| vijeer2001 |
| Posted: Thu Jul 08, 2010 2:37 am Post subject: |
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Novice
Joined: 08 Mar 2010
Posts: 16
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| I am able to enumerate all the queues of the queue manager using PCF. But an extra queue with name starting with "AMQ." is getting created each time I enumerate all the queues. Please guide me how to avoid this. |
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| bruce2359 |
| Posted: Thu Jul 08, 2010 4:47 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9470
Location: US: west coast, almost. Otherwise, enroute.
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AMQ. queue names are queues that are created dynamically by applications opening QModel definitions.
Two types of dynamic queues:
permanent: can hold both persistent and non-persistent messages, and can live beyond the life of the application
temporary: can hold non-persistent messages only, and are summarily deleted when the application ends.
The application decides whether the dynamic queue is to be permanent or temporary by MQOPENing a qmodel that specifies its type.
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| vijeer2001 |
| Posted: Thu Jul 08, 2010 5:51 am Post subject: |
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Novice
Joined: 08 Mar 2010
Posts: 16
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| Code: |
PCFMessageAgent agent = new PCFMessageAgent(strQueManager);
// Build the query request.
PCFMessage requestMessage = new PCFMessage(CMQCFC.MQCMD_INQUIRE_Q_NAMES);
requestMessage.AddParameter(MQC.MQCA_Q_NAME, "*");
// Send the request and retrieve the response.
PCFMessage[] responses = agent.Send(requestMessage);
// Retrieve the values requested from the response.
string[] queueNames = responses[0].GetStringListParameterValue(CMQCFC.MQCACF_Q_NAMES);
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I am using the above code in order to enumerate all the queue names. How can I mention the dynamic queue type(permanent or temporary) in the application |
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| mqjeff |
| Posted: Thu Jul 08, 2010 5:57 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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INQUIRE Q NAMES only returns the NAME of the queue.
If you need more information you need to do a different PCF command.
Consider a PCF equivalent of "dis q(*) type". |
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| bruce2359 |
| Posted: Thu Jul 08, 2010 5:59 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9470
Location: US: west coast, almost. Otherwise, enroute.
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Dynamic queues are named by app programmers by specifying a naming rule.
Possibilities:
1) an absolute name, such as INV23.TEMP.QUEUE - the resulting queue name will be exactly this.
2) a partial name, such as INV23.* - the resulting queue name will be INV23. followed by date/time-stamp data.
3) * - which will result in the AMQ. (or CSQ. on z/OS) queue name - the resulting queue name will be AMQ. followed by date/time-stamp data.
Usually, dynamic queues are not retained (by applications). Many shops prevent (by security rules) AMQ. and CSQ. names, since the queue name cannot be easily attributed to a specific application.
| Quote: |
| MQC.MQCA_Q_NAME, "*" |
indicates that you want any/all queue names. You might want to ignore AMQ. names.
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| vijeer2001 |
| Posted: Thu Jul 08, 2010 6:40 am Post subject: |
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Novice
Joined: 08 Mar 2010
Posts: 16
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Thanks for your response. I am not very clear on what to do. I have just tried below to explain the scenario better.
Our application is supposed to monitor all application/non-system IBM Websphere queues of a queue manager and report the queues exceeding the specific depth. Please note, the rules for depth limit can be kept at queue level and can vary for different queues.
Now, PCF was the best way we found to retrieve all queues and their corresponding depth at one go, and than we apply the specific depth rules to come-up with an exception report, which is used to raise an alert for support.
Using PCF, system is creating a new AMQ.* queue every time. As per understanding, system is creating a dynamic queue, but how can we make system not to keep it at the end of the process. The application is running once in 30 minute and creating 48 queues in a day. The MQ ADMIN is freaking out 
Is there a way we can code to avoid this extra persistant AMQ queue every time? Is there a way system can create the dynamic queue, but should also delete it after the PCF step is completed? |
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| bruce2359 |
| Posted: Thu Jul 08, 2010 6:52 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9470
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| how can we make system not to keep it at the end of the process. |
Are you saying that your monitoring app create the dynamic queue? If so, look at the model queue definition it opens. Make sure it is a temporary dynamic model definition; OR explicitly close the queue with the delete option.
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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