3. IMPLEMENTATION › 3.3 Strategies for UNIX Accounting › 3.3.2 Avoiding UNIX/PCS Duplicate Charging

3.3.2 Avoiding UNIX/PCS Duplicate Charging

Duplicate charging can occur if both the UNIX/PCS Application
Data Journal File (ACTJXA) and the UNIX/PCS Process Data
Journal File (ACTJXP) are active because you can charge for
the same activity from both files.  This is because data on
CPU and disk I/O activity is passed to both journal files
from their database component files but measured in
different ways.

The UNIX Application Performance File (AUCAPL), the source of
the data in ACTJXA, is interval driven; it reports on
application activity in regular intervals.  The UNIX Process
Activity File (AUCKPR), the source of the data in ACTJXP, is
event driven; it reports on application processes as they
complete.  So, although the data is different, if you charge
for the same applications using both journal files, you will
have duplicate charging.


HOW TO AVOID DUPLICATE CHARGING

To avoid duplicate charging, either use only one of the two
available journal files, or use one journal file to charge
for some of the applications and the other journal file to
charge for the others.

One approach is to use ACTJXA to charge for applications 2
through 32; and to use ACTJXP to charge for application 1,
Other.  To use this approach, you should define a Subsysid
group that includes applications 2 through 32.  Then use this
Subsysid group for the ACTJXA charging algorithms.  To define
a Subsysid group, select Qualification Groups, Option 9 on
the Parameter Specification and Generation Menu
(MWF;4;2;3;9).