Channel retry error

If the error information data set CSQSNAP cannot be opened, the error information will be lost. ExplanationA severe error, as reported in the preceding messages, occurred during channel initiator startup processing. Reading the Messages and Codes section of Knowledge Center, as my earlier blog post advised, you are directed to Communications protocol return codes for information city index review about the TCP/IP return code. This is a page in the IBM MQ Knowledge Center listing the most common reason codes from TCP/IP and acts as a handy quick look up. In this case, however, channel triggering had been configured on the SERVER channel side such that the connection enters BINDING mode. This prevents the „requester“ channel from later starting the channel.

ExplanationThe repository manager tried to send a command to another queue manager using channel channel-name. The other queue manager, with identifier target-id, could not be found. ExplanationThe definition of a cluster queue has different values for the DEFPRTY, DEFPSIST, DEFPRESP, and Transatlantic Slave Trade DEFBIND attributes on the various queue managers in the cluster. System programmer responseIf the queue manager is unable to load the persisted transmission queue state during startup it issues message CSQM561E. System actionIf the error occurred for a channel, the channel is stopped.


ExplanationThe channel is closing because no messages arrived on the transmission queue within the disconnect interval. System programmer responseExamine the console log for the remote end to determine why the message cannot be received, and then restart the channel. System programmer responseEither start the remote queue manager, or retry the operation later. System programmer responseDetermine why the remote end did not accept the last batch of messages. System programmer responseChange either the local or remote channel definition so that the values specified for the message sequence number wrap value are the same. ExplanationBecause Db2 is not available, or is no longer available, the channel initiator cannot do processing for a shared channel.

The maximum number allowed is limit and is specified in the MAXINSTC channel attribute. System programmer responseUse the preceding messages on the z/OS console to investigate why Db2 is not available, and restart it if necessary. Alter the queue usage attribute of the queue to that of a transmission queue. For an MQI channel, if the Client Idle function is being used (as set by the DISCINT server-connection channel attribute) and the client application did not issue an MQI call within this time.

ExplanationDuring the processing of channel channel-name, a message was found that had an invalid header. The dead-letter queue was defined as a transmission queue, so a loop would have been created if the message had been put there. System programmer responseIf the maximum allowed is zero, LU 6.2 communications are not allowed, and no LU 6.2 channels can be started.

If you are using ICSF and running the queue manager with SSLFIPS, ensure that ICSF is configured to run in FIPS mode. System programmer responseRefer to API completion and reason codes for information about mqcc and mqrc (mqrc-text provides the MQRC in textual form), which come from an MQCONNXrequest. System programmer responseSee Communications protocol return codes for the cause of the return code from APPC/MVS allocate services and the Writing Servers for APPC/MVS manual for more information.

ExplanationThe channel initiator startup procedure did not complete the shared channel recovery process, because an error occurred. System actionThe channel initiator startup processing continues. The number of current TCP/IP and LU 6.2 channels allowed will be reduced proportionately if some dispatchers did not start. System programmer responseIf the maximum allowed is zero, communications using the indicated system trptype are not allowed, and no such channels can be started. If the maximum allowed is non-zero, wait for some of the operating channels to terminate before restarting the remote channel, or use the ALTER QMGR command to increase TCPCHL or LU62CHL. System programmer responseReview the clustered topics visible to the queue manager and correct any conflicts by modifying or deleting the definitions in error.

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ExplanationA severe error, as reported in the preceding messages, occurred during repository manager processing; the repository manager is unable to continue. System programmer responseIf the repository manager subsequently restarts successfully, or if on restarting the channel initiator the repository manager subsequently starts successfully, this can be ignored. ExplanationThe repository manager successfully processed a RESET CLUSTER ACTIONcommand for the indicated cluster and target queue manager. If there is an isolated occurrence at other times, use the REFRESH CLUSTER command to bring the local repository information up to date. System programmer responseCheck the definition of the channel on the sending queue manager to ensure that it is connected to a full repository for the cluster.


System programmer responseCheck whether password protection settings prevent interoperability with the remote machine. ExplanationThe channel channel-name could not be established because it failed to agree a password protection algorithm with the remote machine conn-id. System programmer responseRestart the channel if appropriate. System actionThe listener continues to run, but the connection is not created. System programmer responseThe failure might be transitory, try again later. If the problem persists, it might be necessary to stop some other jobs that use TCP/IP, or to restart TCP/IP.

The two values must be the same before the channel can be started. ExplanationThe action you requested cannot be performed on channel channel-name. For example, we can only ping a channel from the end sending the message. It is now inactive if it terminated normally when the disconnect interval expired, or stopped if it terminated because of an error or a STOP CHANNEL command. ExplanationThere are too many instances of the channel channel-name running from the connection conn-id to be able to start another.

ExplanationThis is issued in response to the DISPLAY CHINIT command for each TCP/IP listener that is active. ExplanationThe user ID user-id and its password were checked because the inbound connection matched a channel authentication record plus500 down with CHCKCLNT(chckclnt-value). System programmer responseInvestigate the cause of this error, then either correct the problem that prevented the channel delivering the message, or enable the channel to use the dead-letter queue.

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Ssss is the completion code and rrrr is the reason code from the z/OS LOAD service. If you are unable to solve the problem, contact your IBM support center. ExplanationThe initialization command handler, which processes the CSQINPX command data set, is ending abnormally. Sss is the system completion code, and uuu is the user completion code . System actionProcessing continues, but functions that require the data set will be inhibited. For example, if the exit library data set CSQXLIB cannot be opened, user channel and channel auto-definition exits will not be available, and channels that use them will not start.


ExplanationA trigger message was received to start a channel channel-name to process the transmission queue q-name. However, the channel initiator could not find a defined and available channel to start. ExplanationChannel channel-name could not be established due to a negotiation failure between the local queue manager and the remote end using connection conn-id. The last control data received was of type last-segment-type and is accompanied by data indicating the error.

ExplanationThe channel initiator found a message on one of its queues that either had a format that could not be recognized or did not come from a queue manager or channel initiator. Channel channel-name in cluster cluster_name does not satisfy this. Target-id is the identifier of the target queue manager for the channel. System programmer responseCheck the channel and cluster definitions of the sending queue manager.

System programmer responseUse the error codes and explanation to identify the issue. The explanation can come from the z/OS Client Web Enablement Toolkit or from the IBM Cloud Product Insights service. ExplanationThe queue manager was unable to register with the IBM Cloud Product Insights service. Turn on the MONCHL attribute of the channel and check how many users are using the DISPLAY CHSTATUS(channel-name) XQMSGSA command. System programmer responseThe number of messages to be reallocated can be determined using the DISPLAY CHSTATUS(channel-name) XQMSGSA command.

ExplanationQueue manager qmgr-uuid1 has joined a cluster using a cluster receiver channel with the same name as one that has already been defined by queue manager qmgr-uuid2. All cluster receiver channels used within a cluster must be uniquely named. System programmer responseAlter the definitions of the topic on the various queue managers so that they have identical values for all attributes.

ExplanationThe SSL cipher specification value for channel channel-name is not FIPS-certified and the queue manager has been configured to run with SSLFIPS. ExplanationThe SSL key repository does not contain a certificate for the certificate authority . ExplanationA self-signed certificate cannot be validated as it is not in the SSL key repository. ExplanationThe cached SSL key repository is being refreshed, which involves stopping all the channels that use SSL communications. ExplanationAn error occurred with the SSL cipher specification for remote channel channel-name (from connection conn-id).


The connection tag used to serialize the channel within the queue sharing group is currently in use. Because the channel is shared, it might be active on another queue manager. If the channel is a receiver, a previous instance of it might have been orphaned and therefore still be active. If the channel is not running on the named queue manager, then there is an orphaned shared status entry, which mighty be because a loss of connectivity to Db2® occurred. If the above items have been checked, and this problem persists over several days, causing repeats of this error message in the local queue manager’s error logs, contact your IBM support center.

It might be necessary to use MODE to stop the channel manually. System actionThe channel initiator shutdown processing continues. A sending channel is shared if its transmission queue is shared, and private if it is not.

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A channel using SSL communications needs at least one CA or self-signed certificate to perform client authentication. System programmer responseChange the remote channel definition so that the value specified for the SSL cipher specification is the same as that of the local channel. System programmer responseCorrect the SSL cipher specification for the channel. If the remote end is configured to only accept FIPS-certified cipher specifications, change the channel to use a FIPS-certified cipher spec.

MQ Server „Requester“ Channel start fails AMQ9202 CSQX202E ECONNREFUSED reason 769E0291 TCP RC 00000468

You define a new sender channel on z/OS to connect to the Windows queue manager. Message CSQX202E is written to the channel initiator address space joblog. In phase one this will discard all locally cached information for the cluster and request new information from other members of the cluster when necessary. For large cluster configurations this process can take a significant amount of time, especially on full repository queue managers.


System actionThe command is ignored; the repository manager continues processing. Information about the error is written to the data set identified by the CSQSNAP DD statement of the channel initiator started task JCL procedure, xxxxCHIN. System actionThe command is ignored, and the error is reported to the sender; the repository manager continues processing. System programmer responseSee Communications protocol return codes for the cause of the return code from APPC/MVS allocate services, and the Writing Servers for APPC/MVS manual for more information. Check that the LUNAME queue manager attribute is the same as the PARTNER_LU value for the APPC/MVS symbolic destination used by the listener.

System programmer responseIf the channel is stopped, resolve any error, and issue a START CHANNEL command to restart the channel. System programmer responseChange the definitions of the channel so that they are the same on all the queue managers. If the channel type needs changing, you must delete and then redefine the channel. ExplanationDuring the execution of a channel command, or during shared channel processing, shared channel status or shared synchronization key information, held in Db2, was found to be corrupted. ExplanationBecause there was an error in accessing Db2, the channel initiator cannot do processing for a shared channel. There is a long-running problem on the remote queue manager’s CLUSSDR in cluster cluster_name.

If the queue manager finds registrations still exist after waiting for the task to remove its registrations, the queue manager issues this message. The task preventing exclusive access to the repository cache has num-registrations outstanding registrations. If the queue manager is a partial repository for the queue, the updated information should have been sent from a full repository. If the queue manager is a full repository, the updated information should have been sent from the queue manager on which the queue is defined. Use this information in conjunction with any preceding error messages to determine the cause of the problem. ExplanationThe repository manager was unable to reallocate messages for the specified channel to another destination.

User completion codes are generally the result of errors detected by the Language Environment; see the Language Environment for z/OS Debugging Guide and Runtime Messages for information about these codes. This queue manager is unable to start outgoing shared TCP channels, and will not be selected during IBM MQ workload balanced start of a shared channel. This restriction persists until the flag is disabled and the channel initiator is restarted.

System programmer responseIf the numbers in the message differ, the channel initiator was not able to issue restart requests for all the channels. ExplanationThis is issued in response to the DISPLAY CHINIT command. Of the channels that are current, it shows how many are active , and how many are allowed altogether to be active, by the ACTCHL queue manager attribute. It also shows how many of the active channels are paused, waiting to retry putting a message.

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