Comments on: Delete OLD files from Table not having date or timestamp

By: meandyou

meandyou — Thu, 30 Jul 2009 13:47:36 +0000

Every table (or virtually every) should have date and time of row added, who added it, date and time or row modification, and who modified it. DB2′s TIMESTAMP is wonderful. Next comes the discussion of historical information after a row has been modified more than once…

By: rjes

rjes — Mon, 06 Jul 2009 05:48:26 +0000

Hi,

Yes It’s a creation date and time for a transaction file is a fundamental requirment,
The file that I was referring is a transaction file for Java where, it’s SQL file having 34 fields of 30 char type.
Java program that runs in AS400 dynamically writes all the transaction details with a code type. But some records like error info the record has no date associated with it.

The file is attached to a journal and we have added creation date and timestamp for the past 5 months but the records created before that have no values for that field’s.

I’ll try to accomplish with journal, thanks for the comments.

By: philpl1jb

philpl1jb — Sun, 05 Jul 2009 16:51:21 +0000

Perhaps you can add the create date field, for future use.

By: yorkshireman

yorkshireman — Fri, 03 Jul 2009 14:41:26 +0000

This is a pretty fundamental design requirement, and if it wasn’t thought about when the file was created, then you need to find another way of approaching the problem.

A journal would be the most obvious way of managing it. As journals tend to fill and be removed rapidly, you may need a journal for this file only. Build a journal reader to log usage of specific records into another file by having key and last use date and in a years time, you have the answer.

Is it high traffic? is it merely a reference table, is it huge? millions of records? coupla hundred ?