Cluster queue manager properties

Cluster queue manager properties

The Cluster Queue Manager properties dialog shows the attributes of the cluster-sender and cluster-receiver channels on the selected cluster queue manager. We cannot edit any of the attributes in the Cluster Queue Manager properties dialog.

Cluster queue managers are queue managers that are members of a cluster. The term cluster queue manager is also used to refer to the records that each queue manager in a cluster maintains about other queue managers and objects in the cluster, in particular, the cluster-sender and cluster-receiver channels.

The Cluster Queue Manager properties dialog shows the attributes of the cluster-sender and cluster-receiver channels on the selected cluster queue manager. The following tables list the attributes that are displayed in the properties dialog. These attributes vary from the attributes shown for the same channels in the Channel properties dialog (see Channel properties).

General
Extended
MCA
Exits
LU6.2
Retry
Message retry
Cluster
SSL
Statistics

We cannot edit any of the attributes in the Cluster Queue Manager properties dialog.

The tables give the equivalent MQSC parameter for the DISPLAY CLUSQMGR command. For more information about MQSC commands, see Script (MQSC) Commands in the IBM MQ online product documentation.

General page
The following table lists the attributes on the General page of the Cluster Queue Manager properties dialog.

Attribute Meaning MQSC parameter

Channel name The name of the channel definition. CHANNEL

Channel status This is the current status of the channel. STATUS

Connection name For cluster-sender channels, this the name of the computer that hosts the target queue manager. For cluster-receiver channels, this is the name of the computer that hosts the local queue manager. The format of the connection name depends on the transmission protocol that is selected. CONNAME

Description A description of the cluster channel. DESCR

Local communication address If the channel uses TCP/IP and the channel uses a particular IP address, port, or port range for outbound communications, the local communications address for the channel is specified. The channel binds to the address locally. The format used is ipaddress(low-port, high-port), where ipaddress is the IP address specified in IPv4 dotted decimal, IPv6 hexadecimal, or alphanumeric host name format. For example, 192.0.2.1 specifies the IPv4 address with any port; 192.0.2.1(1000) specifies the IPv4 address and a specific port; 192.0.2.1(1000,2000) specifies the IPv4 address and a range of ports; (1000) specifies a port only. LOCLADDR

Suspend This shows whether the queue manager is suspended from the cluster or not (as a result of the SUSPEND QMGR command). Yes means that the queue manager is suspended. SUSPEND

Transmission protocol The transport type that the channel uses. TRPTYPE

Version The version of the IBM MQ installation that the cluster queue manager is associated with. The version has the following format:

VVRRMMFF

VV: Version

RR: Release

MM: Maintenance level

FF: Fix level

VERSION

Extended page
The following table lists the attributes on the Extended page of the Cluster Queue Manager properties dialog.

Attribute Meaning MQSC parameter

Maximum message length The maximum length of a message, in bytes, that can be transmitted on the channel. MAXMSGL

Heartbeat interval The length of the heartbeat interval in seconds. A value of zero means that no heartbeat exchange takes place. The value that is used is the larger of the values specified at the sending side and the receiving end of the channel. The heartbeat interval is the time, in seconds, between heartbeat flows passed from the sending MCA when there are no messages on the transmission queue. The heartbeat exchange gives the receiving MCA the opportunity to quiesce the channel. HBINT

Sequence number wrap The sequence number is the count of messages that are sent through the channel. The sequence number increments each time a message is sent through the channel. This attribute shows the highest message sequence number that can be reached before it restarts at 1. The two ends of the channel must have the same sequence number wrap value when the channel starts; otherwise you get an error. SEQWRAP

Non-persistent message speed
This shows whether non-persistent messages are sent as part of a transaction. Fast means that non-persistent messages are not sent as part of a transaction and so become available for retrieval far more quickly than if they are part of a transaction; Normal means that non-persistent messages are sent as part of a transaction, which reduces the risk of losing the messages if the channel stops while the messages are in transit. NPMSPEED

Batch size The maximum number of messages to be sent before syncpoint is taken. The messages are always transferred individually but are committed or backed out as a batch. BATCHSZ

Disconnect interval (seconds) The number of seconds after the batch ends before the channel closes down. On all platforms except for z/OS®, a value of 0 means that the channel does not disconnect. On z/OS, a value of 0 means that the channel disconnects immediately. DISCINT

Data conversion This shows whether the message is converted before transmission to the format required by the receiving system. Yes means that the message is converted before transmission; No means that the message is converted by the receiving application to the format that is required on the receiving system (this is the typical method). CONVERT

Batch interval (milliseconds) The number of milliseconds during which the channel keeps a batch open even if there are no messages on the transmission queue. BATCHINT

Batch heartbeat interval (milliseconds) The batch heartbeat interval allows the sending end of the channel to verify that the receiving end of the channel is still active just before the sending end of the channel commits a batch of messages. If the receiving end of the channel is not active, the batch can be backed out rather than becoming in-doubt. By backing out the batch, the messages remain available for processing so that they can, for example, be redirected to another channel. This attribute shows the number of seconds that the sending end of the channel waits for a response from the receiving end of the channel before assuming that the receiving end of the channel is inactive. A value of 0 means that batch heartbeating is not used. For more information, see Reducing the likelihood of a channel being in doubt. BATCHHB

Put authority This attribute specifies the type of security processing to be carried out by the Message Channel Agent (MCA) when running an MQPUT command to the target queue or an MQI call. Default means that the default user ID is used; Context means that the alternate user ID from the context information that is associated with the message is used. PUTAUT

Message compression This shows the message compression techniques that are supported by the channel definition, in order of preference. The first technique that is supported by the other end of the channel is used. None means that no message compression is performed; RLE means that message data compression is performed using run-length encoding; ZLIBFAST means that message data compression is performed using the zlib compression technique and a fast compression time is preferred; ZLIBHIGH means that message data compression is performed using the zlib compression technique and a high level of compression is preferred; ANY means that any compression technique that is supported by the queue manager can be used. For more information, see Distributed queueing and clusters in the IBM MQ online product documentation. COMPMSG

Header compression This shows the header compression techniques that are supported by the channel definition, in order of preference. The first technique that is supported by the other end of the channel is used. None means that no header compression is performed; System means that header compression is performed. For more information, see Distributed queueing and clusters in the IBM MQ online product documentation. COMPHDR

Property control This defines what happens to properties of messages that are about to be sent to a V6 or earlier queue manager. The value has to be changed from Compatibility to Force to preserve the V6 behavior of propagating the RFH2 to the caller. The possible values are:
All means that all properties of the message are included with the message when it is sent to the remote queue manager. The properties, except those in the message descriptor (or extension), are placed in one or more MQRFH2 headers in the message data.

Compatibility. This is the default value; it allows applications which expect JMS related properties to be in an MQRFH2 header in the message data to continue to work unmodified.

If the message contains a property with a prefix of mcd., jms., usr., or mqext. then all optional message properties (where the Support value is MQPD_SUPPORT_OPTIONAL), except those in the message descriptor (or extension) are placed in one or more MQRFH2 headers in the message data before the message is sent to the remote queue manager. Otherwise all properties of the message, except those in the message descriptor (or extension), are removed from the message before the message is sent to the remote queue manager.

If the message contains a property where the Support field of the property descriptor is not set to MQPD_SUPPORT_OPTIONAL then the message are rejected and treated in accordance with its report options. If the message contains one or more properties where the Support field of the property descriptor is set to MQPD_SUPPORT_OPTIONAL but other fields of the property descriptor are set to non-default values, then these properties are removed from the message before the message is sent to the remote queue manager.

None means that all properties of the message, except those in the message descriptor (or extension), are removed from the message before the message is sent to the remote queue manager. If the message contains a property where the Support field of the property descriptor is not set to MQPD_SUPPORT_OPTIONAL then the message are rejected and treated in accordance with its report options.
PROPCTL

Batch data limit Provide the limit in kilobytes, from 0 - 999999, of the amount of data that should be sent through a channel before taking a sync point. A value of 0 means that no data limit is applied to batches over this channel. BATCHLIM

Use dead-letter queue Specifies whether the dead-letter queue is used when messages cannot be delivered by channels. There are two possible values:

No means that messages that cannot be delivered by a channel are treated as a failure, and the channel either ends in accordance with the setting of Non-persistent message speed, or discards the messages.
Yes means that if the queue manager Dead-letter queue attribute provides the name of a Dead Letter Queue, then it is used. Otherwise the behavior is as for No.
USEDLQ

MCA page
The following table lists the attributes on the MCA page of the Cluster Queue Manager properties dialog. The attributes show how the Message Channel Agent (MCA) for the selected channel runs.

Attribute Meaning MQSC parameter

MCA user ID The user identifier to be used by the message channel agent when attempting to start a secure LU 6.2 session with a remote message channel agent. USERID

MCA type This shows how the message channel agent (MCA) program runs. Thread means that the MCA runs as a thread; Process means that MCA runs as a process. MCATYPE

MCA name The Message channel agent name. MCANAME

Exits page
The following table lists the attributes on the Exits page of the Cluster Queue Manager properties dialog. The attributes configure the user exits that are run by the selected channel.

Attribute Meaning MQSC parameter

Security exit name The name of the security exit program. SCYEXIT

Message exit name The names of your message exit programs. MSGEXIT

Send exit name The names of your send exit programs. SENDEXIT

Receive exit name The names of your receive exit programs. RCVEXIT

Security exit user data The data that is passed to the channel security exit when the channel security exit is called. SCYDATA

Message exit user data The data that is passed to the channel message exit when the channel message exit program is called. MSGDATA

Send exit user data The data that is passed to the channel send exit when the send exit program is called. SENDDATA

Receive exit user data The data that is passed to the channel receive exit when the receive exit program is called. RCVDATA

LU6.2 page
The following table lists the attributes on the LU6.2 page of the Cluster Queue Manager properties dialog.

Attribute Meaning MQSC parameter

Mode name The LU 6.2 mode name. MODENAME

TP name The name, or the generic name, of the MCA program that is run at the far end of the link. TPNAME

User ID The user identifier that the MCA uses when attempting to initiate a secure LU 6.2 session with a remote MCA. USERID

Password The password that the MCA uses when it attempts to initiate a secure LU 6.2 session with a remote MCA. PASSWORD

Retry page
The following table lists the attributes on the Retry page of the Cluster Queue Manager properties dialog. The attributes configure how the channel behaves if the channel cannot connect to the remote queue manager.

Attribute Meaning MQSC parameter

Short retry count The maximum number of times that the channel can try to connect to a remote queue manager. SHORTRTY

Short retry interval The approximate interval, in seconds, that the channel must wait before it tries again to connect to the remote queue manager during the short retry count. A value of 0 means that the channel tries again immediately. SHORTTMR

Long retry count The maximum number of times that the channel can try to connect to a remote queue manager. The value of this attribute is used only when the count specified in the Short retry count attribute has been exhausted and the channel has still not successfully connected to the remote queue manager. LONGRTY

Long retry interval The approximate interval, in seconds, that the channel must wait before it tries again to connect to the remote queue manager during the long retry count. A value of 0 means that the channel tries again immediately. LONGTMR

Keep alive interval The value of the Keep alive interval attribute specifies the time-out value of the channel. Auto means that the keepalive value is based on the value of the negotiated Heartbeat interval. If a value is specified and the negotiated Heartbeat interval is greater than zero, the Keep alive interval is the negotiated Heartbeat interval plus 60 seconds; if the negotiated Heartbeat interval is zero, the Keep alive interval is zero too. A value of 0 means that KeepAlive on this channel is disabled. KAINT

Message retry page
The following table lists the attributes on the Message retry page of the Cluster Queue Manager properties dialog. The attributes configure how the channel behaves if the channel fails the first time that it tries to put a message on a remote queue

Attribute Meaning MQSC parameter

Message retry count The number of times that the channel retries to connect to the remote queue manager before it decides that it cannot deliver the message to the remote queue. This attribute controls the action of the MCA only if the Message retry exit name attribute is blank. If the Message retry exit name attribute is not blank, the value of the Message retry count attribute is passed to the exit for the exit's use but the number of times that the channel retries to connect is controlled by the exit, not by the Message retry count attribute. MRRTY

Message retry interval The minimum length of time, in milliseconds, that the channel must wait before it can try again to put the message on the remote queue. MRTMR

Message retry exit name The name of the channel message-retry exit program. MRDATA

Message retry exit user data The data that is passed to the channel message retry exit when the channel message retry exit is called. MREXIT

Cluster page
The following table lists the attributes on the Cluster page of the Cluster Queue Manager properties dialog.

Attribute Meaning MQSC parameter

Cluster name The name of the cluster in which the selected channel definition is shared.

Cluster queue manager The name of the queue manager that hosts the selected channel definition.

Definition type This shows how the channel was defined. Cluster-sender means that the channel was defined as a cluster-sender channel from an explicit definition; Auto cluster-sender means that the channel was defined as a cluster-sender channel by auto-definition alone; Auto explicit cluster-sender means that the channel was defined as a cluster-sender channel by auto-definition and an explicit definition; Cluster-receiver means that the channel was defined as a cluster-receiver channel from an explicit definition. DEFTYPE

Queue manager type This shows the function of the queue manager in the cluster. Repository means that the queue manager is a full repository for the cluster; Normal means that the queue manager is a partial repository for the cluster. QMTYPE

QMID The internally generated unique name of the cluster queue manager. QMID

Network priority The value of this attribute indicates the channels priority for the network connection; 0 is the lowest priority. NETPRTY

CLWL channel rank The rank of the channel in the cluster; 0 is the lowest rank. For more information, see Distributed queuing and clusters in the IBM MQ online product documentation. CLWLRANK

CLWL channel priority The priority of the channel in the cluster; 0 is the lowest priority. For more information, see Distributed queuing and clusters in the IBM MQ online product documentation. CLWLPRTY

CLWL channel weight The weighting that is applied to the channel so that the proportion of messages that is sent through the channel is controlled; 1 is the lowest weighting. For more information, see Distributed queuing and clusters in the IBM MQ online product documentation. CLWLWGHT

Transmission queue The cluster-sender channel is transferring messages from this transmission queue.The name is one of the following transmission queues:

SYSTEM.CLUSTER.TRANSMIT.QUEUE

The default cluster transmission queue. The queue is shared between cluster-sender channels. The queue is used if the queue manager attribute, Default cluster transmission queue is set to SCTQ, and no transmission queue has its parameter Cluster channel name set to resolve to this cluster-sender channel. The queue is also used if the version of the queue manager is less than IBM WebSphere MQ Version 7.5.

SYSTEM.CLUSTER.TRANSMIT.ChannelName

The transmission queue is created by the queue manager, in response to setting the queue manager attribute, Default cluster transmission queue to Queue for each channel. By default, the queue is not shared between cluster-sender channels.

User-defined transmission queue

The transmission queue parameter, Cluster channel name is manually set to resolve to this cluster-sender channel. Multiple cluster-sender channels might transfer messages from this transmission queue.

XMITQ

SSL page
The following table lists the attributes on the SSL page of the Cluster Queue Manager properties dialog. The attributes configure the channel to use TLS security.

Attribute Meaning MQSC parameter

SSL CipherSpec The name of the CipherSpec for an TLS connection. Both ends of the IBM MQ TLS channel definition must have the same value in the SSL CipherSpec attribute. SSLCIPH

Accept only certificates with Distinguished Names matching these values The value of the Distinguished Name on the certificate from the peer queue manager or the client at the other end of the IBM MQ channel. When the channel starts, the value of this attribute is compared with the Distinguished Name of the certificate. SSLPEER

Authentication of parties initiating connections This parameter specifies how the channel authenticates TLS clients. Required means that the channel must receive and authenticate an TLS certificate from an TLS client; Optional means that the channel is not required to receive and authenticate an TLS certificate from an TLS client. If the value is Optional and the peer TLS client sends a certificate, the channel authenticates the certificate as normal. SSLCAUTH

Statistics page
The following table lists the attributes on the Statistics page of the Cluster Queue Manager properties dialog. The Statistics page shows the date and time on which the cluster queue manager was last altered.

Attribute Meaning MQSC parameter

Alteration date The date on which the queue's attributes were last altered. ALTDATE

Alteration time The time at which the queue's attributes were last altered. ALTTIME

Parent topic: Properties

Related reference

Channel properties
Cluster queue properties

Attribute	Meaning	MQSC parameter
Channel name	The name of the channel definition.	CHANNEL
Channel status	This is the current status of the channel.	STATUS
Connection name	For cluster-sender channels, this the name of the computer that hosts the target queue manager. For cluster-receiver channels, this is the name of the computer that hosts the local queue manager. The format of the connection name depends on the transmission protocol that is selected.	CONNAME
Description	A description of the cluster channel.	DESCR
Local communication address	If the channel uses TCP/IP and the channel uses a particular IP address, port, or port range for outbound communications, the local communications address for the channel is specified. The channel binds to the address locally. The format used is `ipaddress(low-port, high-port)`, where ipaddress is the IP address specified in IPv4 dotted decimal, IPv6 hexadecimal, or alphanumeric host name format. For example, `192.0.2.1` specifies the IPv4 address with any port; `192.0.2.1(1000)` specifies the IPv4 address and a specific port; `192.0.2.1(1000,2000)` specifies the IPv4 address and a range of ports; `(1000)` specifies a port only.	LOCLADDR
Suspend	This shows whether the queue manager is suspended from the cluster or not (as a result of the SUSPEND QMGR command). Yes means that the queue manager is suspended.	SUSPEND
Transmission protocol	The transport type that the channel uses.	TRPTYPE
Version	The version of the IBM MQ installation that the cluster queue manager is associated with. The version has the following format: VVRRMMFF VV: Version RR: Release MM: Maintenance level FF: Fix level	VERSION

Attribute	Meaning	MQSC parameter
Maximum message length	The maximum length of a message, in bytes, that can be transmitted on the channel.	MAXMSGL
Heartbeat interval	The length of the heartbeat interval in seconds. A value of zero means that no heartbeat exchange takes place. The value that is used is the larger of the values specified at the sending side and the receiving end of the channel. The heartbeat interval is the time, in seconds, between heartbeat flows passed from the sending MCA when there are no messages on the transmission queue. The heartbeat exchange gives the receiving MCA the opportunity to quiesce the channel.	HBINT
Sequence number wrap	The sequence number is the count of messages that are sent through the channel. The sequence number increments each time a message is sent through the channel. This attribute shows the highest message sequence number that can be reached before it restarts at 1. The two ends of the channel must have the same sequence number wrap value when the channel starts; otherwise you get an error.	SEQWRAP
Non-persistent message speed	This shows whether non-persistent messages are sent as part of a transaction. Fast means that non-persistent messages are not sent as part of a transaction and so become available for retrieval far more quickly than if they are part of a transaction; Normal means that non-persistent messages are sent as part of a transaction, which reduces the risk of losing the messages if the channel stops while the messages are in transit.	NPMSPEED
Batch size	The maximum number of messages to be sent before syncpoint is taken. The messages are always transferred individually but are committed or backed out as a batch.	BATCHSZ
Disconnect interval (seconds)	The number of seconds after the batch ends before the channel closes down. On all platforms except for z/OS®, a value of 0 means that the channel does not disconnect. On z/OS, a value of 0 means that the channel disconnects immediately.	DISCINT
Data conversion	This shows whether the message is converted before transmission to the format required by the receiving system. Yes means that the message is converted before transmission; No means that the message is converted by the receiving application to the format that is required on the receiving system (this is the typical method).	CONVERT
Batch interval (milliseconds)	The number of milliseconds during which the channel keeps a batch open even if there are no messages on the transmission queue.	BATCHINT
Batch heartbeat interval (milliseconds)	The batch heartbeat interval allows the sending end of the channel to verify that the receiving end of the channel is still active just before the sending end of the channel commits a batch of messages. If the receiving end of the channel is not active, the batch can be backed out rather than becoming in-doubt. By backing out the batch, the messages remain available for processing so that they can, for example, be redirected to another channel. This attribute shows the number of seconds that the sending end of the channel waits for a response from the receiving end of the channel before assuming that the receiving end of the channel is inactive. A value of 0 means that batch heartbeating is not used. For more information, see Reducing the likelihood of a channel being in doubt.	BATCHHB
Put authority	This attribute specifies the type of security processing to be carried out by the Message Channel Agent (MCA) when running an MQPUT command to the target queue or an MQI call. Default means that the default user ID is used; Context means that the alternate user ID from the context information that is associated with the message is used.	PUTAUT
Message compression	This shows the message compression techniques that are supported by the channel definition, in order of preference. The first technique that is supported by the other end of the channel is used. None means that no message compression is performed; RLE means that message data compression is performed using run-length encoding; ZLIBFAST means that message data compression is performed using the zlib compression technique and a fast compression time is preferred; ZLIBHIGH means that message data compression is performed using the zlib compression technique and a high level of compression is preferred; ANY means that any compression technique that is supported by the queue manager can be used. For more information, see Distributed queueing and clusters in the IBM MQ online product documentation.	COMPMSG
Header compression	This shows the header compression techniques that are supported by the channel definition, in order of preference. The first technique that is supported by the other end of the channel is used. None means that no header compression is performed; System means that header compression is performed. For more information, see Distributed queueing and clusters in the IBM MQ online product documentation.	COMPHDR
Property control	This defines what happens to properties of messages that are about to be sent to a V6 or earlier queue manager. The value has to be changed from Compatibility to Force to preserve the V6 behavior of propagating the RFH2 to the caller. The possible values are: All means that all properties of the message are included with the message when it is sent to the remote queue manager. The properties, except those in the message descriptor (or extension), are placed in one or more MQRFH2 headers in the message data. Compatibility. This is the default value; it allows applications which expect JMS related properties to be in an MQRFH2 header in the message data to continue to work unmodified. If the message contains a property with a prefix of mcd., jms., usr., or mqext. then all optional message properties (where the Support value is MQPD_SUPPORT_OPTIONAL), except those in the message descriptor (or extension) are placed in one or more MQRFH2 headers in the message data before the message is sent to the remote queue manager. Otherwise all properties of the message, except those in the message descriptor (or extension), are removed from the message before the message is sent to the remote queue manager. If the message contains a property where the Support field of the property descriptor is not set to MQPD_SUPPORT_OPTIONAL then the message are rejected and treated in accordance with its report options. If the message contains one or more properties where the Support field of the property descriptor is set to MQPD_SUPPORT_OPTIONAL but other fields of the property descriptor are set to non-default values, then these properties are removed from the message before the message is sent to the remote queue manager. None means that all properties of the message, except those in the message descriptor (or extension), are removed from the message before the message is sent to the remote queue manager. If the message contains a property where the Support field of the property descriptor is not set to MQPD_SUPPORT_OPTIONAL then the message are rejected and treated in accordance with its report options.	PROPCTL
Batch data limit	Provide the limit in kilobytes, from 0 - 999999, of the amount of data that should be sent through a channel before taking a sync point. A value of 0 means that no data limit is applied to batches over this channel.	BATCHLIM
Use dead-letter queue	Specifies whether the dead-letter queue is used when messages cannot be delivered by channels. There are two possible values: No means that messages that cannot be delivered by a channel are treated as a failure, and the channel either ends in accordance with the setting of Non-persistent message speed, or discards the messages. Yes means that if the queue manager Dead-letter queue attribute provides the name of a Dead Letter Queue, then it is used. Otherwise the behavior is as for No.	USEDLQ

Attribute	Meaning	MQSC parameter
MCA user ID	The user identifier to be used by the message channel agent when attempting to start a secure LU 6.2 session with a remote message channel agent.	USERID
MCA type	This shows how the message channel agent (MCA) program runs. Thread means that the MCA runs as a thread; Process means that MCA runs as a process.	MCATYPE
MCA name	The Message channel agent name.	MCANAME

Attribute	Meaning	MQSC parameter
Security exit name	The name of the security exit program.	SCYEXIT
Message exit name	The names of your message exit programs.	MSGEXIT
Send exit name	The names of your send exit programs.	SENDEXIT
Receive exit name	The names of your receive exit programs.	RCVEXIT
Security exit user data	The data that is passed to the channel security exit when the channel security exit is called.	SCYDATA
Message exit user data	The data that is passed to the channel message exit when the channel message exit program is called.	MSGDATA
Send exit user data	The data that is passed to the channel send exit when the send exit program is called.	SENDDATA
Receive exit user data	The data that is passed to the channel receive exit when the receive exit program is called.	RCVDATA

Attribute	Meaning	MQSC parameter
Mode name	The LU 6.2 mode name.	MODENAME
TP name	The name, or the generic name, of the MCA program that is run at the far end of the link.	TPNAME
User ID	The user identifier that the MCA uses when attempting to initiate a secure LU 6.2 session with a remote MCA.	USERID
Password	The password that the MCA uses when it attempts to initiate a secure LU 6.2 session with a remote MCA.	PASSWORD

Attribute	Meaning	MQSC parameter
Short retry count	The maximum number of times that the channel can try to connect to a remote queue manager.	SHORTRTY
Short retry interval	The approximate interval, in seconds, that the channel must wait before it tries again to connect to the remote queue manager during the short retry count. A value of 0 means that the channel tries again immediately.	SHORTTMR
Long retry count	The maximum number of times that the channel can try to connect to a remote queue manager. The value of this attribute is used only when the count specified in the Short retry count attribute has been exhausted and the channel has still not successfully connected to the remote queue manager.	LONGRTY
Long retry interval	The approximate interval, in seconds, that the channel must wait before it tries again to connect to the remote queue manager during the long retry count. A value of 0 means that the channel tries again immediately.	LONGTMR
Keep alive interval	The value of the Keep alive interval attribute specifies the time-out value of the channel. Auto means that the keepalive value is based on the value of the negotiated Heartbeat interval. If a value is specified and the negotiated Heartbeat interval is greater than zero, the Keep alive interval is the negotiated Heartbeat interval plus 60 seconds; if the negotiated Heartbeat interval is zero, the Keep alive interval is zero too. A value of 0 means that KeepAlive on this channel is disabled.	KAINT

Attribute	Meaning	MQSC parameter
Message retry count	The number of times that the channel retries to connect to the remote queue manager before it decides that it cannot deliver the message to the remote queue. This attribute controls the action of the MCA only if the Message retry exit name attribute is blank. If the Message retry exit name attribute is not blank, the value of the Message retry count attribute is passed to the exit for the exit's use but the number of times that the channel retries to connect is controlled by the exit, not by the Message retry count attribute.	MRRTY
Message retry interval	The minimum length of time, in milliseconds, that the channel must wait before it can try again to put the message on the remote queue.	MRTMR
Message retry exit name	The name of the channel message-retry exit program.	MRDATA
Message retry exit user data	The data that is passed to the channel message retry exit when the channel message retry exit is called.	MREXIT

Attribute	Meaning	MQSC parameter
Cluster name	The name of the cluster in which the selected channel definition is shared.
Cluster queue manager	The name of the queue manager that hosts the selected channel definition.
Definition type	This shows how the channel was defined. Cluster-sender means that the channel was defined as a cluster-sender channel from an explicit definition; Auto cluster-sender means that the channel was defined as a cluster-sender channel by auto-definition alone; Auto explicit cluster-sender means that the channel was defined as a cluster-sender channel by auto-definition and an explicit definition; Cluster-receiver means that the channel was defined as a cluster-receiver channel from an explicit definition.	DEFTYPE
Queue manager type	This shows the function of the queue manager in the cluster. Repository means that the queue manager is a full repository for the cluster; Normal means that the queue manager is a partial repository for the cluster.	QMTYPE
QMID	The internally generated unique name of the cluster queue manager.	QMID
Network priority	The value of this attribute indicates the channels priority for the network connection; 0 is the lowest priority.	NETPRTY
CLWL channel rank	The rank of the channel in the cluster; 0 is the lowest rank. For more information, see Distributed queuing and clusters in the IBM MQ online product documentation.	CLWLRANK
CLWL channel priority	The priority of the channel in the cluster; 0 is the lowest priority. For more information, see Distributed queuing and clusters in the IBM MQ online product documentation.	CLWLPRTY
CLWL channel weight	The weighting that is applied to the channel so that the proportion of messages that is sent through the channel is controlled; 1 is the lowest weighting. For more information, see Distributed queuing and clusters in the IBM MQ online product documentation.	CLWLWGHT
Transmission queue	The cluster-sender channel is transferring messages from this transmission queue.The name is one of the following transmission queues: SYSTEM.CLUSTER.TRANSMIT.QUEUE The default cluster transmission queue. The queue is shared between cluster-sender channels. The queue is used if the queue manager attribute, Default cluster transmission queue is set to SCTQ, and no transmission queue has its parameter Cluster channel name set to resolve to this cluster-sender channel. The queue is also used if the version of the queue manager is less than IBM WebSphere MQ Version 7.5. SYSTEM.CLUSTER.TRANSMIT.ChannelName The transmission queue is created by the queue manager, in response to setting the queue manager attribute, Default cluster transmission queue to Queue for each channel. By default, the queue is not shared between cluster-sender channels. User-defined transmission queue The transmission queue parameter, Cluster channel name is manually set to resolve to this cluster-sender channel. Multiple cluster-sender channels might transfer messages from this transmission queue.	XMITQ

Attribute	Meaning	MQSC parameter
SSL CipherSpec	The name of the CipherSpec for an TLS connection. Both ends of the IBM MQ TLS channel definition must have the same value in the SSL CipherSpec attribute.	SSLCIPH
Accept only certificates with Distinguished Names matching these values	The value of the Distinguished Name on the certificate from the peer queue manager or the client at the other end of the IBM MQ channel. When the channel starts, the value of this attribute is compared with the Distinguished Name of the certificate.	SSLPEER
Authentication of parties initiating connections	This parameter specifies how the channel authenticates TLS clients. Required means that the channel must receive and authenticate an TLS certificate from an TLS client; Optional means that the channel is not required to receive and authenticate an TLS certificate from an TLS client. If the value is Optional and the peer TLS client sends a certificate, the channel authenticates the certificate as normal.	SSLCAUTH

Attribute	Meaning	MQSC parameter
Alteration date	The date on which the queue's attributes were last altered.	ALTDATE
Alteration time	The time at which the queue's attributes were last altered.	ALTTIME