Re: JBA ML - Application manager question

[geoff.boreland@xxxxxxxxxxxx]

The use of triggers is an excellent way of creating audit files without
changing any core programs.  One thing that you must ensure though is the
output file used in the trigger must be in the library list.  As the
library lists are limited to 25 libraries, QGPL is often ommitted to make
way for another application library.  The IBM recommended approach is to
put all the trigger programs and output files into the same library as the
file the trigger is added to.  This way you know the output file and
trigger will be in the library list (Unless someone us using SQL or DFU).






                    dlane@unipres.com
                    Sent by:                   To:     jbausers-l@midrange.com
                    jbausers-l-admin@mi        cc:
                    drange.com                 Subject:     Re: JBA ML - 
Application manager
                                               question

                    09/01/02 06:31
                    Please respond to
                    jbausers-l









This will work an any physical file you want to track changes.
We have done this on a few files that we have an interest in knowing what
and
when changes were made and who made them.

Create a physical file to hold the data you want to capture, ie task
information, user, date and time.

Write a program to write to the file data that a database trigger will pass
to
the program.

Create database triggers (after insert, after update and after delete) that
will
call the program and pass the before and after record data from the
physical
file  (APG35PHY).
The program will be called when a record in the physical file (APG35PHY) is
inserted, updated or deleted by any method, ie, JBA application program,
DBU or
SQL.
Place the program and the hold file in library QGPL.

For complete information on how to write trigger programs and create
triggers,
see the IBM publication "DB2 UDB for AS/400 Database Programming."

David Lane
Sr. Programmer/Analyst
Unipres USA, Inc






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