Transaction Oriented BMP (T-BMP)

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Is transaction oriented BMP programming used a lot in IMS shops? It seems to me that it has a lot of advantages/potential and I'm trying to find the real advantages/disadvantages. Thanks

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BMP is used heavily in most IMS shops that I know.
The main advantage is that it allows batch processing while using IMS/TM to co-ordinate data base access. If you jut ran a batch IMS job you could cause your online system to suffer performance degredation and even worse, your data integrity might br comprimised.

Mike

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  • Ndenni01
    We use quite a few transaction driven BMPs. These are very useful for 'offloading' long running processes out of a transaction and into a BMP job. It is also useful when a customer wants to request an ad-hoc process from our scheduling software and we have some persistent BMPs that just sit and wait for transactions to be fed to them. I can extol their virtues for a while. Drawbacks? Hmmmm. Because they don't run through our scheduling software, and we are very low on the automation scale, we do not know when these abend. A user normally will complain about not getting an output and that's how we find out.
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  • Mensingdonn
    I am not real sure what you mean by tranaction oreintated BMP. The main reason you run a BMP is so you do not have to deallocate your Data Base from the online environment. If you have a batch window already it is easier to tune a batch job than it is to tune a BMP. Without data sharing and DBRC turned on you typically have one updater and mulitple readers. If you need 24x7 you have to run your batch work as BMP's. There are message driven BMP's that shops run that the online transactions put messages on the message queue that are then read by BMP's. A BMP allows you to access both IMS and other batch data at the same time.
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