Topic status attributes for publishers

For a given topic, the set of attributes that hold publication status information.

For each attribute, there is a brief description of what information the attribute shows. The table also gives the equivalent MQSC parameter for the DISPLAY TPSTATUS command. For more information about MQSC commands, see Administration using MQSC commands.

Attribute Meaning MQSC parameter
Topic String The Topic String identifies the topic node. It matches information from a publisher to a subscriber interested in that information. TOPICSTR
Date of last publication The date on which a message was last sent to the destination specified by the subscription. LSMGDATE
Time of last publication The time on which a message was last sent to the destination specified by the subscription. LSMGTIME
Publish count The number of applications currently publishing to the topic. PUBCOUNT
Connection ID The currently active CONNID that has opened a subscription. It is used to detect local publications. ACTCONN
Multicast reliability indicator (%) Indicator of the reliability of the multicast messages. The values are expressed as a percentage. A value of 100 indicates that all messages are being delivered without problems. A value less than 100 indicates that some of the messages are experiencing network issues. To determine the nature of these issues, you can enable event message generation, using the COMMEV parameter of the COMMINFO objects, and examine the generated event messages. Two values are returned:

  • The first value is based on recent activity over a short period of time.
  • The second value is based on activity over a longer period of time. If no measurement is available the values are shown as blanks.

MCASTREL
Parent topic: Status attributes


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