DISPLAY LISTENER on Multiplatforms

Use the MQSC command DISPLAY LISTENER to display information about a listener.


Use MQSC commands

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

Synonym: DIS LSTR


DISPLAY LISTENER

DISPLAY LISTENER ( generic-listener-name ) TRPTYPE(ALL)TRPTYPE(LU62)TRPTYPE(NETBIOS)TRPTYPE(SPX)TRPTYPE(TCP)WHERE(FilterCondition) ALL requested attrsRequested attrs,ADAPTER1ALTDATEALTTIMEBACKLOGCOMMANDS1CONTROLDESCRIPADDRLOCLNAME1NTBNAMES1PORTSESSIONS1SOCKET1TPNAME1Notes:

  • 1 Valid only on Windows.


Usage notes

The values displayed describe the current definition of the listener. If the listener has been altered since it was started, the currently running instance of the listener object may not have the same values as the current definition.


Keyword and parameter descriptions for DISPLAY LISTENER

We must specify a listener for which we want to display information. We can specify a listener by using either a specific listener name or a generic listener name. By using a generic listener name, we can display either:

  • Information about all listener definitions, by using a single asterisk (*), or
  • Information about one or more listeners that match the specified name.

    ( generic-listener-name )
    The name of the listener definition for which information is to be displayed. A single asterisk (*) specifies that information for all listener identifiers is to be displayed. A character string with an asterisk at the end matches all listeners with the string followed by zero or more characters.

    TRPTYPE
    Transmission protocol. If you specify this parameter, it must follow directly after the generic-listener-name parameter. If we do not specify this parameter, a default of ALL is assumed. Values are:

      ALL
      This is the default value and displays information for all listeners.

      LU62
      Displays information for all listeners defined with a value of LU62 in their TRPTYPE parameter.

      NETBIOS
      Displays information for all listeners defined with a value of NETBIOS in their TRPTYPE parameter.

      SPX
      Displays information for all listeners defined with a value of SPX in their TRPTYPE parameter.

      TCP
      Displays information for all listeners defined with a value of TCP in their TRPTYPE parameter.

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

      filter-keyword
      Any parameter that can be used to display attributes for this DISPLAY command.

      operator
      This is used to determine whether a listener 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.
      • A generic value. This is a character string. 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.

        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 listener information for each specified listener. If this parameter is specified, any parameters that are requested specifically have no effect; all parameters are still displayed.

    This is the default if we do not specify a generic identifier, and do not request any specific parameters.


Requested parameters

Specify one or more attributes that define the data to be displayed. The attributes can be specified in any order. Do not specify the same attribute more than once.

    ADAPTER
    The adapter number on which NetBIOS listens.

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

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

    BACKLOG
    The number of concurrent connection requests that the listener supports.

    COMMANDS
    The number of commands that the listener can use.

    CONTROL
    How the listener is to be started and stopped:

      MANUAL
      The listener is not to be started automatically or stopped automatically. It is to be controlled by use of the START LISTENER and STOP LISTENER commands.

      QMGR
      The listener being defined is to be started and stopped at the same time as the queue manager is started and stopped.

      STARTONLY
      The listener is to be started at the same time as the queue manager is started, but is not requested to stop when the queue manager is stopped.

    DESCR
    Descriptive comment.

    IPADDR
    The listener's IP address.

    LOCLNAME
    The NetBIOS local name that the listener uses.

    NTBNAMES
    The number of names that the listener can use.

    PORT
    The port number for TCP/IP.

    SESSIONS
    The number of sessions that the listener can use.

    SOCKET
    SPX socket.

    TPNAME
    The LU6.2 transaction program name.

For more information on these parameters, see DEFINE LISTENER on Multiplatforms. Parent topic: MQSC commands