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Jim--
I think you received 2 copies of my message because I sent one copy
directly to you, the other came through the Midrange mailing list.
We wrote a program that can extract the data from any file.
You need to create a custom retrieval file for each data file's
records you plan to save. This file has all the 'journal' fields
that you get retrieving a journal transaction, plus all the fields
from the original file's DDS (or retrieved SQL).
You then retrieve the journal entries for a single database file to a
work file. This is a WIDE record-- it has the journal fields (date,
time, job, user that created the transaction), copies of the database
fields (the DDS), plus a lot of extraneous journal information that
we're not interested in.
Then you copy this work file to your custom file, FMTOPT(*NOCHK).
This will truncate at the end of the DDS fields, and will result in a
lot more compact data. This file can be analyzed with any database
tools.
We've encapsulated the 'journal entry retrieve' and the CPYF into a
program-- we just pass parms for a whole mess of files.
The problem with this technique is that you need to run this same
process for every database file. And retrieving journal entries this
way means that for every file you need to scan the same journal
receivers. Over. And over. And over and over again.
Carsten Flensburg (sp) showed a more efficient technique using the
RCVJRNE command. This command piggybacks on the IBM journal logic.
You tell the system, "While you're capturing transactions, if you see
any for this list (a, b, c, e) of files, give me a copy as well."
This means that for a large number (see command limitations), you
have one job waiting for transactions to happen, and another program
that will process them once found.
See
http://www2.systeminetwork.com/artarchive/index.cfm?fuseaction=viewarticle&CO_ContentID=17415
We mutiliated his procedure for our needs, but it's a lot more
efficient than retrieving journal entries!
--Paul E Musselman
PaulMmn@xxxxxxxxxxxxxxxxxxxx
midrange.com
