DISPLAY QUEUE

Use the MQSC command DISPLAY QUEUE to display the attributes of one or more queues of any type.

Use MQSC commands

For information on how we use MQSC commands, see Performing local administration tasks using MQSC commands.

We can issue this command from sources 2CR. For an explanation of the source symbols, see Sources from which we can issue MQSC commands on z/OS .

• Syntax diagram
• Usage notes
• Parameter descriptions for DISPLAY QUEUE
• Requested parameters

Synonym: DIS Q

DISPLAY QUEUE

• ¹ Valid only on z/OS.
• ² On z/OS, you cannot issue this from CSQINP2.
• ³ Valid only on z/OS when the queue manager is a member of a queue sharing group.
• ⁴ Valid only on an alias queue.
• ⁵ Not valid on z/OS.
• ⁶ Not valid on z/OS or IBM i.

Usage notes

1. We can use the following commands (or their synonyms) as an alternative way to display these attributes.
   • DISPLAY QALIAS
   • DISPLAY QCLUSTER
   • DISPLAY QLOCAL
   • DISPLAY QMODEL
   • DISPLAY QREMOTE

   These commands produce the same output as the DISPLAY QUEUE TYPE(queue-type) command. If you enter the commands this way, do not use the TYPE parameter.

2. On z/OS, the channel initiator must be running before we can display information about cluster queues (using TYPE(QCLUSTER) or the CLUSINFO parameter).
3. The command might not show every clustered queue in the cluster when issued on a partial repository, because the partial repository only knows about a queue once it has tried to use it.

Parameter descriptions for DISPLAY QUEUE

• All queue definitions
• One or more queues that match the specified name

queue-name

The local name of the queue definition to be displayed (see Rules for naming IBM MQ objects). A trailing asterisk * matches all queues with the specified stem followed by zero or more characters. An asterisk (*) on its own specifies all queues.

WHERE

Specify a filter condition to display only those queues that satisfy the selection criterion of the filter condition. The filter condition is in three parts: filter-keyword, operator, and filter-value:

filter-keyword

Almost any parameter that can be used to display attributes for this DISPLAY command. However, we cannot use the CMDSCOPE, QDPHIEV, QDPLOEV, QDPMAXEV, QSGDISP, or QSVCIEV parameters as filter keywords. You cannot use CFSTRUCT, CLUSTER, PSID, STGCLASS,, or CLUSNLif these are also used to select queues. Queues of a type for which the filter keyword is not a valid attribute are not displayed.

operator

This is used to determine whether a queue satisfies the filter value on the given filter keyword. The operators are:

LT

Less than

GT

Greater than

EQ

Equal to

NE

Not equal to

LE

Less than or equal to

GE

Greater than or equal to

LK

Matches a generic string that you provide as a filter-value

NL

Does not match a generic string that you provide as a filter-value

filter-value

The value that the attribute value must be tested against using the operator. Depending on the filter-keyword, this can be:

• An explicit value, that is a valid value for the attribute being tested.

  We can use operators LT, GT, EQ, NE, LE or GE only. However, if the attribute value is one from a possible set of values on a parameter (for example, the value QALIAS on the CLUSQT parameter), we can only use EQ or NE. For the parameters HARDENBO, SHARE, and TRIGGER, use either EQ YES or EQ NO.

• A generic value. This is a character string (such as the character string you supply for the DESCR parameter) with an asterisk at the end, for example ABC*. If the operator is LK, all items where the attribute value begins with the string (ABC in the example) are listed. If the operator is NL, all items where the attribute value does not begin with the string are listed. Only a single trailing wildcard character (asterisk) is permitted.

  We cannot use a generic filter-value for parameters with numeric values or with one of a set of values.

ALL

Specify this to display all the attributes. If this parameter is specified, any attributes that are also requested specifically have no effect; all attributes are still displayed.

On all platforms, this is the default if we do not specify a generic name and do not request any specific attributes.

On z/OS this is also the default if we specify a filter condition using the WHERE parameter, but on other platforms only requested attributes are displayed.

CFSTRUCT ( generic-name)

This parameter is optional and limits the information displayed to those queues where the value of the coupling facility structure is specified in brackets.

The value can be a generic name. If we do not enter a value for this parameter, CFSTRUCT is treated as a requested parameter.

CLUSINFO

This requests that, in addition to information about attributes of queues defined on this queue manager, information about these and other queues in the cluster that match the selection criteria is displayed. In this case, there might be multiple queues with the same name displayed. The cluster information is obtained from the repository on this queue manager.

Note that, on z/OS, we cannot issue DISPLAY QUEUE CLUSINFO commands from CSQINP2.

CLUSNL ( generic-name )

This is optional, and limits the information displayed if entered with a value in brackets:

• For queues defined on the local queue manager, only those with the specified cluster list. The value can be a generic name. Only queue types for which CLUSNL is a valid parameter are restricted in this way; other queue types that meet the other selection criteria are displayed.
• For cluster queues, only those belonging to clusters in the specified cluster list if the value is not a generic name. If the value is a generic name, no restriction is applied to cluster queues.

If we do not enter a value to qualify this parameter, it is treated as a requested parameter, and cluster list information is returned about all the queues displayed. Note: If the disposition requested is SHARED, CMDSCOPE must be blank or the local queue manager.

CLUSTER ( generic-name )

This is optional, and limits the information displayed to queues with the specified cluster name if entered with a value in brackets. The value can be a generic name. Only queue types for which CLUSTER is a valid parameter are restricted in this way by this parameter; other queue types that meet the other selection criteria are displayed.

If we do not enter a value to qualify this parameter, it is treated as a requested parameter, and cluster name information is returned about all the queues displayed.

CMDSCOPE

This parameter applies to z/OS only and specifies how the command runs when the queue manager is a member of a queue sharing group. CMDSCOPE must be blank, or the local queue manager, if QSGDISP is set to GROUP or SHARED.

''

The command runs on the queue manager on which it was entered. This is the default value.

qmgr-name

The command runs on the queue manager you specify, providing the queue manager is active within the queue sharing group.

We can specify a queue manager name, other than the queue manager on which the command was entered, only if we are using a queue sharing group environment and if the command server is enabled.

*

The command runs on the local queue manager and is also passed to every active queue manager in the queue sharing group. The effect of this is the same as entering the command on every queue manager in the queue sharing group.

We cannot use CMDSCOPE as a filter keyword.

PSID ( integer )

The identifier of the page set where a queue resides. This is optional. Specifying a value limits the information displayed to queues that have an active association to the specified page set. The value consists of two numeric characters, in the range 00 - 99. An asterisk * on its own specifies all page set identifiers. If we do not enter a value, page set information is returned about all the queues displayed. The page set identifier is displayed only if there is an active association of the queue to a page set, that is, after the queue has been the target of an MQPUT request. The association of a queue to a page set is not active when:

• The queue is just defined
• The STGCLASS attribute of the queue is altered, and there is no subsequent MQPUT request to the queue
• The queue manager is restarted and there are no messages on the queue

This parameter is valid only on z/OS.

QSGDISP

Specifies the disposition of the objects for which information is to be displayed. Values are:

LIVE

This is the default value and displays information for objects defined with QSGDISP(QMGR) or QSGDISP(COPY). If there is a shared queue manager environment, and the command is being executed on the queue manager where it was issued, also display information for objects defined with QSGDISP(SHARED).

ALL

Display information for objects defined with QSGDISP(QMGR) or QSGDISP(COPY).

If there is a shared queue manager environment, and the command is being executed on the queue manager where it was issued, this option also displays information for objects defined with QSGDISP(GROUP) or QSGDISP(SHARED).

In a shared queue manager environment:

DISPLAY QUEUE(name) CMDSCOPE(*) QSGDISP(ALL)

The command lists objects matching name in the queue sharing group, without duplicating those in the shared repository.

COPY

Display information only for objects defined with QSGDISP(COPY).

GROUP

Display information only for objects defined with QSGDISP(GROUP). This is allowed only if there is a shared queue manager environment.

PRIVATE

Display information only for objects defined with QSGDISP(QMGR) or QSGDISP(COPY).

QMGR

Display information only for objects defined with QSGDISP(QMGR).

SHARED

Display information only for objects defined with QSGDISP(SHARED). This is allowed only in a shared queue manager environment.

Note: For cluster queues, this is always treated as a requested parameter. The value returned is the disposition of the real queue that the cluster queue represents. If QSGDISP(LIVE) is specified or defaulted, or if QSGDISP(ALL) is specified in a shared queue manager environment, the command might give duplicated names (with different dispositions) . Note: In the QSGDISP(LIVE) case, this occurs only where a shared and a non-shared queue have the same name; such a situation should not occur in a well-managed system. QSGDISP displays one of the following values:

QMGR

The object was defined with QSGDISP(QMGR).

GROUP

The object was defined with QSGDISP(GROUP).

COPY

The object was defined with QSGDISP(COPY).

SHARED

The object was defined with QSGDISP(SHARED).

We cannot use QSGDISP as a filter keyword.

STGCLASS ( generic-name)

This is optional, and limits the information displayed to queues with the storage class specified if entered with a value in brackets. The value can be a generic name.

If we do not enter a value to qualify this parameter, it is treated as a requested parameter, and storage class information is returned about all the queues displayed.

This parameter is valid only on z/OS.

TARGTYPE ( target-type )

This is optional and specifies the target type of the alias queue we want to be displayed.

TYPE ( queue-type )

This is optional, and specifies the type of queues we want to be displayed. If you specify ALL, which is the default value, all queue types are displayed; this includes cluster queues if CLUSINFO is also specified. As well as ALL, we can specify any of the queue types allowed for a DEFINE command: QALIAS, QLOCAL, QMODEL, QREMOTE, or their synonyms, as follows:

QALIAS

Alias queues

QLOCAL

Local queues

QMODEL

Model queues

QREMOTE

Remote queues

We can specify a queue type of QCLUSTER to display only cluster queue information. If QCLUSTER is specified, any selection criteria specified by the CFSTRUCT, STGCLASS, or PSID parameters are ignored. Note that we cannot issue DISPLAY QUEUE TYPE(QCLUSTER) commands from CSQINP2.

On Multiplatforms, QTYPE ( type ) can be used as a synonym for this parameter.

The queue name and queue type (and, on z/OS, the queue disposition) are always displayed.

Requested parameters

Specify one or more parameters that define the data to be displayed. The parameters can be specified in any order, but do not specify the same parameter more than once.

Most parameters are relevant only for queues of a particular type or types. Parameters that are not relevant for a particular type of queue cause no output, nor is an error raised.

The following table shows the parameters that are relevant for each type of queue. There is a brief description of each parameter after the table, but for more information, see the DEFINE command for each queue type.

	Local queue	Model queue	Alias queue	Remote queue	Cluster queue
ACCTQ			N/A	N/A	N/A
ALTDATE
ALTTIME
BOQNAME			N/A	N/A	N/A
BOTHRESH			N/A	N/A	N/A
CFSTRUCT			N/A	N/A	N/A
CLCHNAME			N/A	N/A	N/A
CLUSDATE	N/A	N/A	N/A	N/A
CLUSNL		N/A			N/A
CLUSQMGR	N/A	N/A	N/A	N/A
CLUSQT	N/A	N/A	N/A	N/A
CLUSTER		N/A
CLUSTIME	N/A	N/A	N/A	N/A
CLWLPRTY		N/A
CLWLRANK		N/A
CLWLUSEQ		N/A	N/A	N/A	N/A
CRDATE			N/A	N/A	N/A
CRTIME			N/A	N/A	N/A
CURDEPTH		N/A	N/A	N/A	N/A
CUSTOM
DEFBIND		N/A
DEFPRESP
DEFPRTY
DEFPSIST
DEFREADA				N/A	N/A
DEFSOPT			N/A	N/A	N/A
DEFTYPE			N/A	N/A	N/A
DESCR
DISTL			N/A	N/A	N/A
GET				N/A	N/A
HARDENBO			N/A	N/A	N/A
IMGRCOVQ			N/A	N/A	N/A
INDXTYPE			N/A	N/A	N/A
INITQ			N/A	N/A	N/A
IPPROCS		N/A	N/A	N/A	N/A
MAXDEPTH			N/A	N/A	N/A
MAXFSIZE			N/A	N/A	N/A
MAXMSGL			N/A	N/A	N/A
MONQ			N/A	N/A	N/A
MSGDLVSQ			N/A	N/A	N/A
NPMCLASS			N/A	N/A	N/A
OPPROCS			N/A	N/A	N/A
PROCESS			N/A	N/A	N/A
PROPCTL				N/A	N/A
PSID		N/A	N/A	N/A	N/A
PUT
QDEPTHHI			N/A	N/A	N/A
QDEPTHLO			N/A	N/A	N/A
QDPHIEV			N/A	N/A	N/A
QDPLOEV			N/A	N/A	N/A
QDPMAXEV			N/A	N/A	N/A
QMID	N/A	N/A	N/A	N/A
QSGDISP
QSVCIEV			N/A	N/A	N/A
QSVCINT			N/A	N/A	N/A
QTYPE
RETINTVL			N/A	N/A	N/A
RNAME	N/A	N/A	N/A		N/A
RQMNAME	N/A	N/A	N/A		N/A
SCOPE		N/A			N/A
SHARE			N/A	N/A	N/A
STATQ			N/A	N/A	N/A
STGCLASS			N/A	N/A	N/A
TARGET	N/A	N/A		N/A	N/A
TARGTYPE	N/A	N/A		N/A	N/A
TPIPE		N/A	N/A	N/A	N/A
TRIGDATA			N/A	N/A	N/A
TRIGDPTH			N/A	N/A	N/A
TRIGGER			N/A	N/A	N/A
TRIGMPRI			N/A	N/A	N/A
TRIGTYPE			N/A	N/A	N/A
USAGE			N/A	N/A	N/A
XMITQ	N/A	N/A	N/A		N/A

ACCTQ

Whether accounting (on z/OS, thread-level and queue-level accounting) data collection is to be enabled for the queue.

ALTDATE

The date on which the definition or information was last altered, in the form yyyy-mm-dd.

ALTTIME

The time at which the definition or information was last altered, in the form hh.mm.ss.

BOQNAME

Backout requeue name.

BOTHRESH

Backout threshold.

CLCHNAME

CLCHNAME is the generic name of the cluster-sender channels that use this queue as a transmission queue. The attribute specifies which cluster-sender channels send messages to a cluster-receiver channel from this cluster transmission queue.

CLUSDATE

The date on which the definition became available to the local queue manager, in the form yyyy-mm-dd.

CLUSNL

The namelist that defines the cluster that the queue is in.

CLUSQMGR

The name of the queue manager that hosts the queue.

CLUSQT

Cluster queue type. This can be:

QALIAS

The cluster queue represents an alias queue.

QLOCAL

The cluster queue represents a local queue.

QMGR

The cluster queue represents a queue manager alias.

QREMOTE

The cluster queue represents a remote queue.

CLUSTER

The name of the cluster that the queue is in.

CLUSTIME

The time at which the definition became available to the local queue manager, in the form hh.mm.ss.

CLWLPRTY

The priority of the queue for the purposes of cluster workload distribution.

CLWLRANK

The rank of the queue for the purposes of cluster workload distribution.

CLWLUSEQ

Whether puts are allowed to other queue definitions apart from local ones.

CRDATE

The date on which the queue was defined (in the form yyyy-mm-dd).

CRTIME

The time at which the queue was defined (in the form hh.mm.ss).

CURDEPTH

Current depth of queue.

On z/OS, CURDEPTH is returned as zero for queues defined with a disposition of GROUP. It is also returned as zero for queues defined with a disposition of SHARED if the CF structure that they use is unavailable or has failed.

Messages put on a queue count toward the current depth as they are put. Messages got from a queue do not count toward the current depth. This is true whether operations are done under syncpoint or not. Commit has no effect on current depth. Therefore:

• Messages put under syncpoint (but not yet committed) are included in the current depth.
• Messages got under syncpoint (but not yet committed) are not included in the current depth.

CUSTOM

This attribute is reserved for the configuration of new features before separate attributes have been introduced. It can contain the values of zero or more attributes as pairs of attribute name and value in the form NAME(VALUE).

DEFBIND

Default message binding.

DEFPRESP

Default put response; defines the behavior that should be used by applications when the put response type in the MQPMO options has been set to MQPMO_RESPONSE_AS_Q_DEF.

DEFPRTY

Default priority of the messages put on the queue.

DEFPSIST

Whether the default persistence of messages put on this queue is set to NO or YES. NO means that messages are lost across a restart of the queue manager.

DEFREADA

This specifies the default read ahead behavior for non-persistent messages delivered to the client.

DEFSOPT

Default share option on a queue opened for input.

DEFTYPE

Queue definition type. This can be:

• PREDEFINED (Predefined)

  The queue was created with a DEFINE command, either by an operator or by a suitably authorized application sending a command message to the service queue.

• PERMDYN (Permanent dynamic)

  Either the queue was created by an application issuing MQOPEN with the name of a model queue specified in the object descriptor (MQOD), or (if this is a model queue) this determines the type of dynamic queue that can be created from it.

  On z/OS the queue was created with QSGDISP(QMGR).

• TEMPDYN (Temporary dynamic)

  Either the queue was created by an application issuing MQOPEN with the name of a model queue specified in the object descriptor (MQOD), or (if this is a model queue) this determines the type of dynamic queue that can be created from it.

  On z/OS the queue was created with QSGDISP(QMGR).

• SHAREDYN

  A permanent dynamic queue was created when an application issued an MQOPEN API call with the name of this model queue specified in the object descriptor (MQOD).

  On z/OS, in a queue sharing group environment, the queue was created with QSGDISP(SHARED).

DESCR

Descriptive comment.

DISTL

Whether distribution lists are supported by the partner queue manager. Supported only on Multiplatforms.

GET

Whether the queue is enabled for gets.

HARDENBO

Whether the back out count is hardened to ensure that the count of the number of times that a message has been backed out is accurate. Note: This parameter affects only IBM MQ for z/OS. It can be set and displayed on other platforms but has no effect.

IMGRCOVQ

Whether a local or permanent dynamic queue object is recoverable from a media image if linear logging is being used. Note: This parameter is not valid on IBM MQ for z/OS.

INDXTYPE

Index type (supported only on z/OS).

INITQ

Initiation queue name.

IPPROCS

Number of handles indicating that the queue is open for input.

On z/OS, IPPROCS is returned as zero for queues defined with a disposition of GROUP. With a disposition of SHARED, only the handles for the queue manager sending back the information are returned, not the information for the whole group.

MAXDEPTH

Maximum depth of queue.

MAXFSIZE

The size, in megabytes, of the queue file displayed.

The default value for this attribute is DEFQFS, which stands for default queue file size and equates to a hard-coded value of 2,088,960 MB.

MAXMSGL

Maximum message length.

MONQ

Online monitoring data collection.

MSGDLVSQ

Message delivery sequence.

NPMCLASS

Level of reliability assigned to non-persistent messages that are put to the queue.

OPPROCS

Number of handles indicating that the queue is open for output.

On z/OS, OPPROCS is returned as zero for queues defined with a disposition of GROUP. With a disposition of SHARED, only the handles for the queue manager sending back the information are returned, not the information for the whole group.

PROCESS

Process name.

PROPCTL

Property control attribute.

This parameter is applicable to Local, Alias and Model queues.

This parameter is optional.

Specifies how message properties are handled when messages are retrieved from queues using the MQGET call with the MQGMO_PROPERTIES_AS_Q_DEF option.

Permissible values are:

ALL

To contain all the properties of the message, except those contained in the message descriptor (or extension), select All. The All value enables applications that cannot be changed to access all the message properties from MQRFH2 headers.

COMPAT

If the message contains a property with a prefix of mcd., jms., usr., or mqext., all message properties are delivered to the application in an MQRFH2 header. Otherwise all properties of the message, except those contained in the message descriptor (or extension), are discarded and are no longer accessible to the application.

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.

FORCE

Properties are always returned in the message data in an MQRFH2 header regardless of whether the application specifies a message handle.

A valid message handle supplied in the MsgHandle field of the MQGMO structure on the MQGET call is ignored. Properties of the message are not accessible via the message handle.

NONE

All properties of the message, except those in the message descriptor (or extension), are removed from the message before the message is delivered to the application.

PUT

Whether the queue is enabled for puts.

QDEPTHHI

Queue Depth High event generation threshold.

QDEPTHLO

Queue Depth Low event generation threshold.

QDPHIEV

Whether Queue Depth High events are generated.

We cannot use QDPHIEV as a filter keyword.

QDPLOEV

Whether Queue Depth Low events are generated.

We cannot use QDPLOEV as a filter keyword.

QDPMAXEV

Whether Queue Full events are generated.

We cannot use QDPMAXEV as a filter keyword.

QMID

The internally generated unique name of the queue manager that hosts the queue.

QSVCIEV

Whether service interval events are generated.

We cannot use QSVCIEV as a filter keyword.

QSVCINT

Service interval event generation threshold.

QTYPE

Queue type.

The queue type is always displayed.

On Multiplatforms, TYPE(type) can be used as a synonym for this parameter.

RETINTVL

Retention interval.

RNAME

Name of the local queue, as known by the remote queue manager.

RQMNAME

Remote queue manager name.

SCOPE

Scope of queue definition (not supported on z/OS).

SHARE

Whether the queue can be shared.

STATQ

Whether statistics data information is to be collected.

STGCLASS

Storage class.

TARGET

This parameter requests that the base object name of an aliased queue is displayed.

TARGTYPE

This parameter requests that the target (base) type of an aliased queue is displayed.

TPIPE

The TPIPE names used for communication with OTMA using the IBM MQ - IMS bridge if the bridge is active. This parameter is supported only on z/OS.

For more information about TPIPEs, see Control the IMS bridge.

TRIGDATA

Trigger data.

TRIGDPTH

Trigger depth.

TRIGGER

Whether triggers are active.

TRIGMPRI

Threshold message priority for triggers.

TRIGTYPE

Trigger type.

USAGE

Whether the queue is a transmission queue.

XMITQ

Transmission queue name.

For more details of these parameters, see DEFINE queues. Parent topic: MQSC commands

Related information

• Display default object attributes
• Work with model queues