TITLE: DB00819I - Business Value Metric Display - Datacom
Article ID: 449605
Updated On:
Products
Issue/Introduction
The DB00819I message is a Business Value Metric (BVM) display introduced as a default Multi-User Facility (MUF) startup option in recent maintenance. This message provides performance details such as requests per elapsed second, requests per CPU second, and I/O event counts. While providing useful diagnostic data, the message may appear frequently (e.g., every two minutes) in the job log.
Cause
Recent maintenance enabled the Business Value Metric (BVM) display by default in the Multi-User Facility (MUF) startup options.
Resolution
To manage or suppress the DB00819I message, use one of the following methods.
Route the Message to a Separate Spool File
To retain the performance data for diagnostic purposes without flooding the job log, route the message to the DD@MSG output file.
- Locate the Datacom MUF SYSIN file (it would be the AXDATIN1 member in the custom macro library--CUSMAC--for Datacom/AD).
- Add the following statement:
MESSAGE DD@MSG,DB00819 -- TWO MINUTE PERFORMANCE MSG - The change takes effect at the next Multi-User Facility (MUF) startup.
Disable the Message in the Current Execution
To immediately stop the message from appearing without restarting the Multi-User Facility (MUF), issue the following console command:
/F <mufname>,MESSAGE NO,DB00819
Permanently Disable the Message
To prevent the message from being produced in future Multi-User Facility (MUF) executions:
- Locate the Daatacom MUF SYSIN file.
- Add the following startup option:
BUSINESS_VALUE_METRIC_1 NO
Additional Information
Metric Field Descriptions
- RQ/E: Average requests per elapsed second.
- RQ/C: Average requests per CPU second.
- RQ/I: Average requests per I/O.
- E-SEC: Elapsed seconds during the interval.
- C-SEC: CPU seconds during the interval.
- IO: Number of I/O events.
- RQ: Total number of requests.
- TASKS: Number of allocated tasks at the time of the message.
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