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| MQRCCF_COMMAND_LENGTH_ERROR when using MQCACF_COMMAND_SCOPE |
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| deliego |
 Posted: Wed Jun 16, 2021 10:17 am Post subject: MQRCCF_COMMAND_LENGTH_ERROR when using MQCACF_COMMAND_SCOPE |
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Newbie
Joined: 16 Jun 2021
Posts: 5
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Hi everyone,
I currently have this code, which works when I run it against a QM member in a QSG on MQ 9.2.0, but fails when I run it on another QM in a QSG on MQ 9.0.0.
The error I get is 3230: Code: MQCC_FAILED, Reason: MQRCCF_COMMAND_LENGTH_ERROR
But if I remove this line:
| Code: |
| pcfMessageRequest.addParameter(MQConstants.MQCACF_COMMAND_SCOPE, "*"); |
then it works fine on 9.0.0
| Code: |
PCFMessage pcfMessageRequest = new PCFMessage(MQConstants.MQCMD_INQUIRE_Q_NAMES);
pcfMessageRequest.addParameter(MQConstants.MQCA_Q_NAME, "*");
pcfMessageRequest.addParameter(MQConstants.MQIA_Q_TYPE, MQConstants.MQQT_LOCAL);
pcfMessageRequest.addParameter(MQConstants.MQCACF_COMMAND_SCOPE, "*");
try {
PCFMessage[] pcfMessageResponses = pcfMessageAgent.send(pcfMessageRequest);
for (PCFMessage response : pcfMessageResponses) {
String[] queueNames = response.getParameter(MQConstants.MQCACF_Q_NAMES).getStringValue().split("\n");
for (String queueName : queueNames) {
queuesResult.add(queueName.trim());
}
}
}
} catch (MQDataException ex) {
String errorMessage = String.format("Code: %s, Reason: %s",
MQConstants.lookupCompCode(ex.getCompCode()),
MQConstants.lookupReasonCode(ex.getReason()));
logger.error("Could not inquire queue names for *. " + errorMessage);
}
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So why would it complain about the command being so large just by adding the command scope "*"?
Also, I am using com.ibm.mq.allclient:9.2.2.0
Any help is much appreciated.
Thanks! |
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| RogerLacroix |
| Posted: Fri Jun 18, 2021 12:11 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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The command server is really picky about the order of parameters. The MQ Knowledge Center for Inquire Queue Names shows that CommandScope should be the 2nd parameter.
Try the following:
| Code: |
PCFMessage pcfMessageRequest = new PCFMessage(MQConstants.MQCMD_INQUIRE_Q_NAMES);
pcfMessageRequest.addParameter(MQConstants.MQCA_Q_NAME, "*");
pcfMessageRequest.addParameter(MQConstants.MQCACF_COMMAND_SCOPE, "*");
pcfMessageRequest.addParameter(MQConstants.MQIA_Q_TYPE, MQConstants.MQQT_LOCAL);
PCFMessage[] pcfMessageResponses = pcfMessageAgent.send(pcfMessageRequest); |
Regards,
Roger Lacroix
Capitalware Inc.
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| deliego |
| Posted: Fri Jun 18, 2021 12:42 pm Post subject: |
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Newbie
Joined: 16 Jun 2021
Posts: 5
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I did not know that there was a specific order for these parameters 
I will try your suggestion and post an update.
Thanks! |
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| deliego |
| Posted: Thu Jun 24, 2021 5:04 am Post subject: |
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Newbie
Joined: 16 Jun 2021
Posts: 5
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| deliego |
| Posted: Mon Aug 16, 2021 8:57 am Post subject: |
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Newbie
Joined: 16 Jun 2021
Posts: 5
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Looks like I spoke too soon, and according to IBM's doc here:
https://www.ibm.com/docs/en/ibm-mq/9.0?topic=formats-inquire-queue-names
| Quote: |
| "When a value other than blank is specified, the maximum response size is limited to 32KB from each queue manager. If the response from a queue manager would be larger than this, an error response with reason code MQRCCF_COMMAND_LENGTH_ERROR (3230) is returned by that queue manager." |
Does anyone know of a workaround to this limit? |
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| bruce2359 |
| Posted: Mon Aug 16, 2021 10:22 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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From the URL you posted:
| Quote: |
| When a value other than blank is specified, the maximum response size is limited to 32KB from each queue manager. If the response from a queue manager would be larger than this, an error response with reason code MQRCCF_COMMAND_LENGTH_ERROR (3230) is returned by that queue manager. |
One of the qmgrs is returning more than 32K in violation of the 32K limit. You may need to modify your app to request only from a subset of QMs per inquire call.
Out of curiosity, how many qmgrs in the QSG? How many queues? Anything in the qmgr syslog at the time of the r/c 3230?
_________________
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ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| deliego |
| Posted: Tue Aug 17, 2021 5:36 am Post subject: |
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Newbie
Joined: 16 Jun 2021
Posts: 5
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I ended up making two calls, one for all regular queue names, and the other for queues with QSG_DISP = SHARED to get only the shared ones.
There are 4 QMs as part of the same QSG. They range from 445 to 660 queues each.
Thanks! |
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