10. MODIFICATION

This chapter explains the user exit points that are provided
with the CA MICS Web Analyzer.  You must carefully explore
whether it is necessary to develop any user exit routines.
To this end, first ensure that the requirement cannot be
satisfied through one of the standard options or definitions.
This process can be greatly facilitated by discussing the
requirement with CA Technical Support.

At times, additional system customizing is needed to tailor
CA MICS to meet your site's needs. There are many user exit
points provided within CA MICS.  Each of these points
corresponds to a position in the CA MICS logic where user
modification:

o  Is likely to occur, based on our experience
o  Presents only a slight possibility of compromising CA MICS
   database or operational integrity
o  Is relatively easy to document and understand

Using the CA MICS exit facilities to augment CA MICS
processing logic is the safest method of system modification.
Generally, we consider that the CA MICS system administrator
has four levels or methods by which CA MICS can be augmented,
changed, and enhanced:

o  CA MICS Standard Option and Parameter Definitions

   The diverse installation and definition options provide
   most users with adequate provisions for customizing
   CA MICS.

o  Modification through User Exit Points

   There may be site-dependent requirements that are not
   adequately addressed through the standard options and
   parameters of CA MICS. In these cases, one or more of the
   user exit points available to you may be used to code user
   written routines that would satisfy these extended
   requirements.

o  Extension through Field Developed Applications

   Although most users do not initially consider this a way
   of modifying CA MICS, the development of field-developed
   applications may be the most advantageous method of
   addressing the need to modify a CA MICS product. For
   example, it may be better to write an application to
   handle additional SMF data than to attempt to modify the
   logic of the CA MICS Web Analyzer.

o  System Code Modification

   As a last resort, you may be able to satisfy your
   requirements by implementing a source code change.

Before attempting to activate an exit, you should read and
fully understand the information contained in Section 4.3 of
the CA MICS System Modification Guide, User Exit Facilities.
The following material is intended to supplement, not
replace, that discussion.

The design, coding, testing, and implementation of CA MICS
user exit routines should be approached with caution as
errors may result, causing the corruption of data.  You
should be meticulous in the definition and validation of the
exit routines to ensure that system integrity and performance
have not been adversely affected.

The following sections identify the user exit points that are
available for CA MICS Web Analyzer processing and describe in
detail each of the user exit points:

This section contains the following topics:

10.1 Available User Exits

10.2 Exit Routine Considerations

10.3 Input Exits

10.4 Output Exits