Reset Queue Statistics

The Reset Queue Statistics (MQCMD_RESET_Q_STATS) command reports the performance data for a queue and then resets the performance data. Performance data is maintained for each local queue (including transmission queues).

Performance data is reset at the following times:

• When a Reset Queue Statistics command is issued
• When the queue manager is restarted
• When a performance event is generated for a queue

Required parameters

QName (MQCFST)

Queue name (parameter identifier: MQCA_Q_NAME).

The name of the local queue to be tested and reset.

Generic queue names are supported. A generic name is a character string followed by an asterisk (*), for example ABC*, and it selects all objects having names that start with the selected character string. An asterisk on its own matches all possible names.

The maximum length of the string is MQ_Q_NAME_LENGTH.

Optional parameters

CommandScope (MQCFST)

Command scope (parameter identifier: MQCACF_COMMAND_SCOPE). This parameter applies to z/OS® only. Specifies how the command is executed when the queue manager is a member of a queue-sharing group. We can specify one of the following:

• blank (or omit the parameter altogether). The command is processed on the queue manager on which it was entered.
• a queue manager name. The command is processed on the queue manager you specify, providing it is active within the queue sharing group. If you specify a queue manager name other than the queue manager on which it was entered, you must be using a queue sharing group environment, and the command server must be enabled.
• an asterisk (*). The command is processed on the local queue manager and is also passed to every active queue manager in the queue sharing group.

The maximum length is MQ_QSG_NAME_LENGTH.

Error codes

This command might return the following error codes in the response format header, in addition to the values shown in Error codes applicable to all commands.

Reason (MQLONG)

The value can be any of the following values:

MQRCCF_Q_WRONG_TYPE

Action not valid for the queue of specified type.

MQRCCF_EVENTS_DISABLED

The queue manager performance events are disabled (PERFMEV). On z/OS, it is necessary to enable queue manager performance events to use this command. For more details, see the PerformanceEvent property in the Change Queue Manager command.