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01.17.2006 at 10:22AM PST, ID: 21699807
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8.8

Alternatives to an Oracle job?

Asked by timboc in Oracle Database

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I’m looking for alternative approaches to the following issue.

We currently have an inventory application that tracks the receipt (number of items in inventory goes up) and issue (number of items in inventory goes down) of products.

I’ve currently implemented the task of knowing how many of a particular product is “In Stock” by placing a trigger on the transactional tables and inserting a row to represent the increment, or decrement, of a product into a special table.  There is a job running every 60 seconds to look for rows in this special table and maintain the master “In Stock” table.  Since there is only 1 instance of this job there is never any issue with two processes modifying the “In Stock” values incorrectly.  Also, the transactional processes that create the increment/decrement rows only make these rows accessible to the job by committing their data.

A few downsides to this technique:
1. It can take up to 60 seconds for the correct “In Stock” quantity of an item to appear.
2. If the job breaks (or if the DBA sets job_queue_processes to 0) then “In Stock” quantities never update as the increment/decrement rows are stuck in the special table.

Does anyone have alternative ideas as to how I can attack this problem?

Any help would be greatly appreciated.

-Tim
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[+][-]01.17.2006 at 11:01AM PST, ID: 15722299

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[+][-]01.17.2006 at 11:16AM PST, ID: 15722422

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[+][-]01.18.2006 at 12:17AM PST, ID: 15726750

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[+][-]01.18.2006 at 05:17AM PST, ID: 15728350

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[+][-]01.19.2006 at 12:30AM PST, ID: 15737080

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[+][-]01.24.2006 at 11:37AM PST, ID: 15779045

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[+][-]02.06.2006 at 09:17PM PST, ID: 15889781

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Zone: Oracle Database
Tags: oracle
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Solution Provided By: RCorfman
Participating Experts: 4
Solution Grade: A
 
 
 
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