Ibm mq msgtype The content and structure of the application data is defined by the application programs that use it. The structure is an input/output parameter on the MQGET, MQPUT, and MQPUT1 calls. Note: When a version-2 MQMD is used, the queue manager performs additional checks on any MQ header structures that might be present at the beginning of the application message data; for further details see the usage notes The properties are relevant only when an application connects to an IBM® MQ queue manager. In previous versions of the product, the last reason code encountered in the connection You can set properties for all types of channels, including client-connection channels. 1. Abstract MQ Telemetry Transport (MQTT) is a lightweight broker-based publish/subscribe messaging protocol designed to be open, simple, lightweight and easy to implement. IBM MQ is the market-leading messaging integration middleware product. Constants that are specific to a given provider (such as IBM MQ) can be found in the provider JavaDoc, typically at com. For detailed information about the contents of the message descriptor and the message headers, see the IBM MQ Application programming reference. The hierarchy within a group is as follows: These tables show how JMS header and property fields are mapped into MQMD and MQRFH2 fields at get () or receive () time. Header fields contain values used by both clients and providers to identify and route messages. jmqi. Header: All messages support the same set of header fields. com. However, the queue manager never splits a message in the middle of an IBM® MQ header structure. IBM MQ message properties are used by message selectors to filter publications to topics or to selectively get messages from queues. The JMS provider vendor can choose to not support any standard properties, to support some standard properties, or to support all standard properties. Now I need to retrieve the messageid of the message. This means that a segment containing a single MQ header structure cannot be split further by the queue manager, and as a result the minimum possible segment size for that message is greater than 16 bytes. By enhancing your applications further with features such as message expiry and application timeout, you can also minimise the effect of downstream application failures. Oct 14, 2015 · In our company we are using IBM MQ server for message queueing. 2 is a new SQL View: MESSAGE_QUEUE_INFO. Methods on the interfaces that are defined in JMS 2. Application-defined properties must obey the following rules: These values correspond to the message types that can be specified in the MsgType field of a message descriptor. When used with WebSphere MQ 7. mqpgf is a program that can perform various tests using MQI, APIs provided by MQ. IBM MQ defines a range of feedback codes for applications to use. Categories of optional fields are as follows: JMS optional header fields, application-specific properties, and provider-specific properties. 0 and later, IBM Rational® Integration Tester also supports message properties and exposes them as header fields The character set value in an incoming IBM MQ message has no effect on the interpretation of that message as a JMS BytesMessage. For information about error messages, console logs, and dumps on IBM MQ for z/OS, see Troubleshooting IBM MQ for z/OS problems. JMS_IBM_Format represents the format of the message body. For more information about report messages and the associated properties and options, see the Report messages section of the IBM MQ documentation. Im not really sure what the difference is. The base class for these exceptions is JMSRuntimeException. The options controlling the selection criteria are specified correctly. JMS_IBM_MsgType to MQMD MsgType: Value maps directly onto MQMD MsgType. Property names A property name is a character string. These characteristics make it ideal for use in constrained environments, for example, but not limited to: Mar 9, 2025 · IBM MQ Demystified: A Practical Developer’s Guide to Messaging Queues By SantoshKumar C. 0) versions This document describes the fixes in WebSphere MQ V5. If the application has not set an explicit value of JMS_IBM_MsgType, then a default value is used. The Activity PCF group is detailed in this topic. wmq. JmsFactoryFactory: JmsFactoryFactory is used to programmatically create connection factory and destination objects of the specified provider type. If a message is put with one or more IBM MQ header structures at the beginning of the application message data, the queue manager performs certain checks on the header structures to verify that they are valid. Properties allow an application, using message selectors, to have a JMS provider select or filter messages on its behalf, using application-specific criteria. The format of the message descriptor is defined by IBM MQ. JMB_IBM_MQMD_MsgFlags with value MQMF_SEGMENTATION_ALLOWED. For details of IBM MQ JMS support, including details of how IBM MQ stores JMS message properties and header fields in the MQMD and the MQRFH2, see Using WebSphere MQ classes for JMS. h. These examples show how to send different kinds of messages. The constants listed here are all JMS-specific constants, and apply to any provider. JmqiException, are thrown by the Java Message Queueing Interface (JMQI). For example, the IBM® MQ JMS client sets the provider property to be JMS_IBM_MsgType. The following notes refer to the mapping of JMS provider-specific fields into IBM MQ messages. In effect, this provides a mechanism to add application-specific header fields to a message. For more information about message properties in IBM MQ, see Message properties. The consumer application requires the message content type to be set to "application/json". The MQMD structure contains the control information that accompanies the application data when a message travels between the sending and receiving applications. By default, the property is not set. Could somebody advice, what else should be set ? Thank you very much ! Queue managers can also return MQI reason codes in the Feedback field. 5 Knowledge Center page "What is installed for IBM WebSphere MQ classes for JMS" it states the following "Do not include the IBM WebSphere MQ classes for JMS JAR files within application archives (such as enterprise application archives, or EAR files). The initial value of this field is MQMT_DATAGRAM. The resource adapter makes extensive use of linked exceptions to report problems. Distributed queuing is one of the components of IBM MQ for z/OS. Properties: Each message contains a built-in facility for supporting application-defined property values. *StrucId [MD ] Version [2] Report [0] MsgType [8] Expiry [-1] Feedback [0] Encoding [273] CodedCharSetId [943] Format [MQHRF2 ] Priority [0] Persistence [0] MsgId [0x414D512053616D706C65514D202020205B1E078C20002907] CorrelId [0x000000000000000000000000000000000000000000000000] BackoutCount [0] ReplyToQ [ ] ReplyToQMgr [SampleQM ] UserIdentifier May 29, 2010 · MQSeries. we currently are using MQ version 7. May 4, 2015 · We have a Java application that sends JMS message via IBM WebSphere MQ. The Jul 10, 2003 · Has anyone tried applying MQ Adapter 3. We set MQMD property MsgType to 1, but when viewing the message header from the queue, the value is interpreted as MQMT_SYSTEM_ The application data. Message descriptor An IBM MQ message consists of control information and application data. . These four messages are: Datagram — without acknowledging the receipt of the message. All of the following can affect the eligibility of a message for return on the MQGET call: MQGMO_LOGICAL_ORDER MQGMO_ALL_MSGS_AVAILABLE MQGMO_ALL_SEGMENTS_AVAILABLE MQGMO_COMPLETE_MSG MQMO For reports generated by IBM MQ If you segment your messages or allow the queue manager to do so, there is only one case in which you can expect to receive a single report for the entire message. The names of the properties are defined as named constants in the header file xmsc_wmq. mq. 5. JMS_IBM_Format to MQMD Format For the MQPUT and MQPUT1 calls, the MsgType value must be within either the system-defined range or the application-defined range; if it is not, the call fails with reason code MQRC_MSG_TYPE_ERROR. This can be defined by the application setting the JMS_IBM_Format property of the message (note that there is an 8 character limit), or can default to the IBM MQ format of the message body appropriate to the JMS message type. Aug 4, 2019 · MQJE001: Completion Code '2', Reason '2033' issue in IBM Only For Getting Some Messages Asked 6 years, 3 months ago Modified 6 years, 3 months ago Viewed 25k times Mar 11, 2025 · In this guide, I’ll clearly explain how IBM MQ Queue Managers communicate, how different queue types work together, and provide practical, real-world examples you can immediately use or reference. Troubleshooting IBM MQ resource adapter problems When using the IBM MQ resource adapter, most errors cause exceptions to be thrown, and these exceptions are reported to the user in a manner that depends on the application server. Improving the performance of nonpersistent messages in IBM MQ classes for Java To improve performance when browsing messages or consuming nonpersistent messages from a client application, you can use read ahead. See IBM MQ messages. ' This property seem to be not taken into account. For more information about this, see the usage notes for the MQPUT call. You can get a specific message from a queue by specifying its MsgToken and the MatchOption MQMO_MATCH_MSG_TOKEN in the MQGMO structure. This property is not relevant when an application connects to a service integration bus. 8 but I can see from readme that it only support down to We would like to show you a description here but the site won’t allow us. In the old application for example when we create a message we set the field IBM_JMS_FORMAT. Properties provide an efficient mechanism for supporting application defined message filtering. A client uses it to create a connection with a JMS provider. This view returns one line for each message in a message queue, in a similar manner to what is returned by the Display Messages command, DSPMSG. <provider>Constants. Queue managers can also return MQI reason codes in the Feedback field. Oct 7, 2004 · MQSeries. jms. We set MQMD property MsgType to 1, but when viewing the message header from the queue, the value is interpreted as MQMT_SYSTEM_FIRST instead of MQMT_REQUEST. The JMQI is the component that is used by the IBM MQ classes for JMS to communicate with a queue manager. Mapping JMS provider-specific fields The following notes refer to the mapping of JMS provider-specific fields into IBM MQ messages. Message object properties prefixed JMS_IBM_MQMD allow you to set or read the corresponding MQMD field. As noted in the answer, this is a known IBM issue IT02814 in which older (pre-7. Sep 28, 2021 · help i try to connected with Spring Integration Ibm mq, what i doing: public Publisher<Message<String>> jmsReactiveSource () { return IntegrationFlows . After I applied SP3 I can execute my request/reply message handler only once. An example of a program that could use a feedback code is one that monitors the workloads of other programs serving a queue. setIntProperty (, ); If you want to get a boolean property value from a Application has started the MQGET MQI functionApplication has started the MQGET MQI function For the MQPUT and MQPUT1 calls, the MsgType value must be within either the system-defined range or the application-defined range; if it is not, the call fails with reason code MQRC_MSG_TYPE_ERROR. See Also: Constant Field Values The purpose of IBM MQ programmable command format (PCF) commands is to allow administration tasks to be programmed into an administration program. A IBM MQ message property is data associated with a message, consisting of a textual name and a value of a particular type. @Configuration @EnableJms public class MQConfigurat 文字セットとエンコード MQMD のデータは、ローカル・キュー・マネージャーの文字セットとエンコードで記述する必要があります。これらは、 CodedCharSetId キュー・マネージャー属性と MQENC_NATIVE で指定します。 ただし、アプリケーションが IBM MQ MQI client として実行されている場合、構造体は Oct 4, 2020 · Mapping JMS property fields These notes refer to the mapping of JMS property fields in IBM MQ messages. But this returns a As reported in this Stack Overflow question, the PublishJMS processor was failing to connect to an IBM MQ JMS server with the exception com. 0 SP3 to his or her 6. 7章メッセージ 7章 メッセージこの章では、WebSphereMQで デー タを処理や転送する際の単位となる「 メッセー ジ」 について、もう少し詳しくお話しします。 ただ、 単に「WebSph ere MQ がメ扱ッうセー ジ」 と言っても、実際には アプリケー ションから見た「 メッセー ジ」. Nonetheless, if the bytes represent text, make sure that code page used by the application matches the coded character set of the destination. <provider@gt;. May 10, 2017 · Using SQL for message queue data One of the new enhancements that came with the latest TRS for IBM i 7. If a process, either a queue manager or a user process, performs an activity on a message with this option set it can choose to generate and put an activity report. I found this constant "JMS_IBM_MQMD_MsgFlags" WMQConstants. Learn about the different types of queues and their attributes. These values correspond to the message types that can be specified in the MsgType field of a message descriptor. The Forward to Q Mgr and Forward to Queue fields are initialized with values from the MQMD, these can be changed before forwarding the message. Note:WebSphere MQ 7. Request messages — when you want a reply from the application that receives the message. Originally introduced in 1993 (under the IBM MQSeries® name), IBM MQ provides an available, reliable, scalable, secure, and high-performance transport mechanism to address businesses connectivity requirements. Message groups allow multiple messages to be marked as related to one another, and a logical order to be applied to the group (see Logical and physical ordering). Non- Java applications are unlikely to recognize the Java UTF8 encoding. つまり、 アプリケー In this series, we will explain the basics of WebSphere MQ/IBM MQ through functional verification of IBM MQ using mqpgf/mqpcf which is Software created/provided by us. This version is supported in all IBM® MQ V6. . The message queuing message descriptor (MQMD) contains the control information that accompanies the application data when a message travels between the sending and receiving applications. Jul 30, 2024 · Explore the properties of messages and queues, including message headers, message properties, and queue attributes. As it indicates the cause of the problem that occurred, be sure to output to the application log etc for the cause investigation. You want to know more details about this message and why it was placed in the DLQ. Dec 21, 2024 · My requirement is to send a message to a topic instead of a queue using IBM MQ. 0 or later queue manager. It adds an MQDLH structure to the message. 0, where multiple client connection attempts are made, for example with a channel with a comma separated connection name and the connection sequence fails, reason codes other than MQRC_HOST_NOT_AVAILABLE and MQRC_STANDBY_Q_MGR are given priority when being returned to an application. IBM MQ includes a choice of APIs and supports the JavaTM Message Service (JMS) API. Property data types and values A property can be a boolean, a byte When you send messages with IBM MQ, you choose what data to send, where to send it and when to send it. The objective of this techdoc is to show how the Message ID (MsgId) and the Correlation ID (CorrelId) in an MQ Message Descriptor (MQMD) are handled in a message that is sent from a Remote Queue Definition to a Transmission Queue and from there to the destination queue Published constants for the package com. Jun 11, 2025 · MQ Join this online group to communicate across IBM product users and experts by sharing advice and best practices with peers and staying up to date regarding product enhancements. ibm. Jul 5, 2006 · MQSeries. In a IBM MQ message properties were introduced with the IBM MQ Version 7. 0 JMS client. JMS_IBM_MSGTYPE); Valid on a Message object. 1 IS? Before I applied SP3 the MQ adapter was working just fine (no other SPs or FIXs had been applied). This structure includes the name of the destination queue and the reason that the message was put on the dead-letter queue. Pandey, Senior Software Engineer & IBM User When I first started working with IBM MQ, I clearly remember … Aug 17, 2017 · I'm using the mq library of IBM to read messages from MQ queues. MsgType is MQMT_REPORT, but in the case of an exception report, etc. JMS_IBM_Format maps to the MQMD Format field only if the message contains no RFH or RFH2 sections. net Forum Index » IBM MQ Java / JMS » How to get MSGTYPE of datagram You notice a message in the Dead Letter Queue (DLQ) of an IBM MQ queue manager that has reason code:hex 0x010F, decimal 271, MQFB_XMIT_Q_MSG_ERROR. The unit of work (if any) used for the MQPUT or MQPUT1 call was committed successfully. Our findings are that you unfortunately will not be able to achieve this in the deprecated IBM MQ Series protocol as it does not support setting these properties in this way. For the MQPUT and MQPUT1 calls, the MsgType value must be within either the system-defined range or the application-defined range; if it is not, the call fails with reason code MQRC_MSG_TYPE_ERROR. net Forum Index » General IBM MQ Support » Error 2033 when trying to get a message Error 2033 when trying to get a message « View previous topic :: View next topic » Author Message Sofiane For the MQPUT and MQPUT1 calls, the MsgType value must be within either the system-defined range or the application-defined range; if it is not, the call fails with reason code MQRC_MSG_TYPE_ERROR. , the reason code of MQ is set, and various values are set depending on the situation. I now it is in the message header under the name messageId. Set using setIntProperty (JmsConstants. There are four types of messages defined by IBM® MQ. MQMD folder, and some values are set automatically, independently of any values that you specify. A connection factory encapsulates a set of connection configuration parameters that has been defined by an administrator. should I change the MQ manager CCSID? to which ID? what MQMD header should I set? Mar 12, 2025 · Mastering IBM MQ: A Complete Guide to Message Flow Between Queue Managers Introduction In today’s distributed computing environments, IBM MQ plays a crucial role in ensuring reliable, secure Mar 12, 2025 · Mastering IBM MQ: A Complete Guide to Message Flow Between Queue Managers Introduction In today’s distributed computing environments, IBM MQ plays a crucial role in ensuring reliable, secure An IBM MQ message consists of message properties and application data. Body: JMS defines several types of On IBM® MQ for z/OS®, the queue attribute IndexType can be used to increase the speed of MQGET operations on the queue. IBM MQ can use three different types of channels: a message channel, an MQI channel, and an AMQP channel. On Multiplatforms, message segmentation enables large messages to be broken up into smaller segments. Reason codes might be returned by a broker in response to a command message in PCF format, depending on the parameters used in that message. from (Jms. An IBM MQ message consists of message properties and application data. Nov 30, 2011 · My goal is to pass a big message payload, which to be divided to segments on the server. Therefore, catching JMSRuntimeExceptions provides a generic way of handling these types of exceptions. msg. WebSphere MQ messages consist of a system header (the MQMD), zero or more other MQ headers (system or custom), and a message body. 3 and 7. Aug 1, 2025 · ActivityDesc: 'IBM MQ Display Route Application ' Operation: OperationType: Put OperationDate: '20250805' OperationTime: '11092442' Message: MsgLength: 180 MQMD: StrucId: 'MD ' Version: 1 Report: DiscardMsg | PassDiscardAndExpiry | Activity MsgType: Datagram Expiry: 600 Feedback: None Encoding: X'222' CodedCharSetId: Embedded Format: 'MQADMIN Values of the fields in MQMD are set according to the values in the MQOutput node and the Root. The choice of message type affects your approach to message conversion. This is an output field for the MQGET call, and an input field for MQPUT and MQPUT1 calls. The MQMessage class provides a number of methods to get and set properties, according to the data type of the property. When I print the message ( which uses the message's toString() Aug 23, 2023 · Now the TIBCO adaptor will be replaced by DP, DP will create a MQ manager and take the exact same message and send to mainframe MQ, I used the default MQ manager CCSID 819 and did not set any MQMD header, downstream app could not processing the message. MQConnectionFactory is the IBM MQ implementation of ConnectionFactory. DetailedMessageFormatException: JMSCC0051: The property 'JMS_IBM_MsgType' should be set using type 'java. 0 throw unchecked exceptions. lang. See Features demonstrated in the sample programs for the names of these programs. The interaction of message conversion and message type is described for the JMS message types, JMSObjectMessage, JMSTextMessage, JMSMapMessage, JMSStreamMessage, and JMSBytesMessage. Integer', not 'java. The contents of a JMS message are partly mapped and partly copied to an IBM MQ message. JMS_IBM_MSGTYPE, ); Get using getIntProperty (JmsConstants. MQMD: The MQMD class contains the control information that accompanies the application data when a message travels between the sending and receiving applications. Oct 4, 2020 · If JMSReplyTo is set to an IBM MQ queue destination, MSGType is set to the value MQMT_REQUEST If JMSReplyTo is not set, or is set to anything other than an IBM MQ queue destination, MsgType is set to the value MQMT_DATAGRAM JMS_IBM_Feedback to MQMD Feedback Value maps directly onto MQMD Feedback. For most applications, automatically managed buffers provide a suitable balance of performance and convenience for the application developer. Message properties and message length Use the queue manager attribute MaxPropertiesLength to control the size of the properties that can flow with any message in an IBM MQ queue manager. Considering the case where the segments do not arrive in order due to the existence of multiple routes or the threading of the application, specify MQGMO_LOGICAL_ORDER to ensure that the segments are fetched in order. But when we are browsing a queue we will read out IBM_JMS_MQMD_FORMAT. In this way you can create queues and process definitions, and change queue managers, from a program. For more information, see Type of index. WMQConstants. If multiple message headers exist in the message, the order of the headers is significant. Once the message has been displayed it can be deleted, left on the queue, or forwarded to another queue. This document shows the different output that can be obtained with the different choices from the Explorer and the sample amqsbcg. 1 The Get sample programs get messages from a queue using the MQGET call. In addition, there are differences in the MsgHeaders of the generated Un message IBM MQ se compose de propriétés de message et de données d'application. Mar 19, 2014 · I am using JMS to put a message on MQ and an MDB that uses JMS classes ( not MQ specific classes ) to read and process the message. IBM MQ - Display messages in a queue using the amqsbcg command by Jeremy Canfield | Updated: August 04 2022 | IBM MQ articles From IBM® MQ 9. Need help A message contains a built-in facility to support application-defined property values. Constants are set using set Property (, ) and get Property (); For example, if you are setting an integer property value on a Connection Factory, use: JmsConnectionFactory. MQRC_* (reason codes)MQRC_* (reason codes) IBM MQ does not perform any code page conversion in the client as the message is a JMSBytesMessage, and because the readBytes and writeBytes methods are used. The message was put on the queue successfully. The second time I execute the request/reply message handler everything locks up. It interacts with the queue manager through the qmgr agent process. 0 and later support message properties, which are used to add optional fields to a message. Standard properties These properties are set by the JMS provider when a message is sent. Le descripteur de message de mise en file d'attente de messages (MQMD) contient les informations de contrôle qui accompagnent les données d'application lorsqu'un message circule entre les applications d'envoi et de réception. Jan 18, 2018 · We are using kafka-connect-mqsource is a connector for copying data from IBM MQ into Apache Kafka. client. 0 and later environments, plus IBM MQ MQI clients connected to these systems. The Feedback field is used when MQMD. This type of messaging is called send and forget; the sender sends a message and relies on IBM MQ to ensure that the message reaches its destination. Some properties are specific to certain types of channel. Oct 4, 2020 · Note: JMS_IBM_Format represents the format of the message body. net Forum Index » General IBM MQ Support » Messages in dead letter queue without reason code. IBM MQ provides a sample queue browser that you can use to look at the contents of the messages on a queue. The control information is defined in a message descriptor structure (MQMD) and contains such things as: The Activity report message data consists of the Activity PCF group and, if generated for a trace-route message, the TraceRoute PCF group. For the same queue we are putting both String and Object type data message with the help of methods WriteObject and WriteString. A message descriptor. For more information about feedback and reason codes, see Feedback. Apr 26, 2024 · With request-response messaging, your applications can exchange messages asynchronously, meaning they can function independently making them more robust. In a Like all IBM MQ messages, an FTM SWIFT message has a standard IBM MQ message descriptor (MQMD) header, but it also has an additional header called an IBM MQ rules and formatting header 2 (MQRFH2): The MQMD contains information specific to IBM MQ. Certain restrictions apply to its length and the set of characters that can be used. Reply messages — reply to another message. This can be defined by the application setting the JMS_IBM_Format property of the message (note that there is an 8 character limit), or can default to the IBM® MQ format of the message body appropriate to the JMS message type. I am doing below configuration to send message using JmsTemplate. This is when you have requested only COD reports, and you have specified MQGMO_COMPLETE_MSG on the getting application. 3 Fix Pack 12. The IBM MQ classes for JMS automatically create and size message buffers to suit the sizes of the messages being received. MQMessage: MQMessage represents both the message descriptor and the data for a WebSphere MQ message. IBM MQ は、アプリケーションが使用するフィードバック・コードの範囲を定義します。 フィードバックおよび理由コードについて詳しくは、 フィードバック を参照してください。 It is possible to use WebSphere MQ Explorer V7 and the C sample "amqsbcg" to display the RFH2 header for JMS messages and to display message properties created by non-JMS applications. If you review IBM MQ 7. For example, IBM MQ provider constants can be found at The following notes refer to the mapping of JMS provider-specific fields into IBM MQ messages. Oct 22, 2020 · We are using JmsTemplate to send messages to an IBM MQ's local queue. Property data types and values A property can be a boolean, a byte If IBM MQ cannot deliver a message to a remote queue, it attempts to put the message on the dead-letter (undelivered-message) queue. The MQGET call gets a message from an open local queue. String'. *In MQ for HP NonStop, MQPMO_SYNCPOINT is not necessary because MQPMO_SYNCPOINT is the default. The message descriptor identifies the message and contains additional control information, such as the type of message and the priority assigned to the message by the sending application. In this series, we will explain the basics of WebSphere MQ/IBM MQ through functional verification of IBM MQ using mqpgf/mqpcf which is Software created/provided by us. The next two exceptions, both of which are instances of com. It cannot get a message from a queue on another system. The following reason codes can occur in addition to those documented for the WebSphere MQ MQI, in the WebSphere MQ Application Programming Reference. 0. ", so it would appear that bundling the IBM MQ jar files into a Uber jar with the shade is not supported by IBM. The sample design allows only messages with unique MsgId / CorrelId combinations to be selected and displayed, because the message is retrieved Message In message queuing, a message is a collection of data sent by one program and intended for another program. You cannot use grouped or segmented messages when putting to a topic. For For reports generated by IBM MQ If you segment your messages or allow the queue manager to do so, there is only one case in which you can expect to receive a single report for the entire message. fig 1. Use this topic to interpret the message codes issued by the distributed queuing component. These constants refer to property names and values which can be set via the client. Mar 7, 2022 · These would be : JMS_IBM_MQMD_CodedCharSetId JMS_IBM_MQMD_Format JMS_IBM_MQMD_MsgType I think we will need both JMS_IBM_MQMD and JMS_IBM. For example, IBM MQ provider constants can be found at This allows the report option to be set on any user message, even if they are processed by a non- IBM® WebSphere® MQ 6. For example, WebSphere MQ provider constants can be found at com. JMS message conversion Message data conversion in JMS is performed when sending and receiving messages. Mapping JMS messages onto IBM MQ messages IBM MQ messages are composed of a Message Descriptor, an optional MQRFH2 header, and a body. IBM WebSphere MQ によって定義されるメッセージには、4 つのタイプがあります。 They also facilitate communication between IBM® MQ and JMS applications. For information about message types, see Types of message.