Sub-capacity license charges with IBM MQ for z/OS
Sub-capacity license charges is a particular way of charging you for an IBM® product that runs on a z/OS® system, which is based on how much use you make of the product.
To determine the product usage, the z/OS system records the amount of processor time that is used by the product when it executes. z/OS can measure how much processing time is spent in doing work on behalf of the IBM MQ queue manager that is handling MQI calls, executing MQSC commands, or performing some other action to support the messaging and queuing functions that are used by your application programs. The amount of processing time is recorded in a file at hourly intervals, and the hourly records are totaled at the end of a month. In this way, the total amount of time used by the IBM MQ for z/OS product on your behalf is computed, and used to determine how much you pay for your use of the IBM MQ for z/OS product that month.
- When IBM MQ for z/OS is installed, it identifies itself to z/OS and requests that the System Management Facilities (SMF) mechanism within z/OS is to automatically measure how much processor time is used by the IBM MQ for z/OS product.
- When enabled, the z/OS usage measurement facility collects usage figures for each hour of the day, and generates usage records that are added to a report file on disk.
- At the end of one full month, these usage records are collected by a program, which generates a report of product usage for the month. This report is used to determine the charge for the IBM MQ for z/OS product.
For more information about sub-capacity license charging and the Sub-Capacity Reporting Tool (SCRT), see Preparing to use the Sub-Capacity Reporting Tool. For information about the MULCCAPT parameter, see Using CSQ6SYSP.