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ALTER TRACE on z/OS

Use the MQSC command ALTER TRACE to change the trace events being traced for a particular active queue manager trace. ALTER TRACE stops the specified trace, and restarts it with the altered parameters.


Use MQSC commands

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

Parameters not specified in the ALTER TRACE command result in the existing values for those parameters being left unchanged.

We can issue this command from sources 12CR. For an explanation of the source symbols, see Use commands on z/OS®.

Synonym: ALT TRACE

ALTER TRACE

ALTER TRACE ( GLOBALSTATACCTG
  • ) TNO ( integer ) CMDSCOPE(' ')CMDSCOPE(qmgr-name)
  • 1
  • trace attrs
  • Trace attrsCLASS(*,integer
  • integer:integer
  • )
  • COMMENT(string)
  • IFCID(*,ifcid
  • )
  • Notes:

    • 1 Valid only on z/OS when the queue manager is a member of a queue-sharing group.


    Usage notes

    Channel initiator traces cannot be altered.


    Parameter descriptions for ALTER TRACE

    Specify one of the following trace types:

      GLOBAL
      Service data from the entire queue manager (the synonym is G)

      STAT
      Statistical data (the synonym is S)

      ACCTG
      Accounting data (the synonym is A)

    And:

      TNO( integer )
      The number of the trace to be altered (1 through 32). We can specify only one trace number.

      CMDSCOPE
      This parameter specifies how the command runs when the queue manager is a member of a queue sharing group. CMDSCOPE cannot be used for commands issued from the first initialization input data set CSQINP1.

        ' '
        The command runs on the queue manager on which it was entered.

        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 you are using a queue sharing group environment and if the command server is enabled.


    Trace parameters

      CLASS( integer )
      The new trace class. See START TRACE on z/OS for a list of allowed classes. A range of classes can be specified as m:n (for example, CLASS(01:03)). CLASS(*) activates all classes.

      COMMENT( string )
      A comment that is reproduced in the trace output record (except in the resident trace tables).

      string is any character string. If it includes blanks, commas, or special characters, it must be enclosed between single quotation marks (').

      IFCID( ifcid )
      Reserved for IBM® Service.