Threshold upper limit for dialog+rfc in BW server

The EarlyWatch report for my Business Warehouse server displays the average response time for various tasks. One of those tasks is DIALOG+RFC. The system has an average response time of 15599ms for this task. This is considered an acceptable time frame for a BW system. What is the threshold when this becomes an unacceptable time frame? When will I start getting warnings about the amount of time it is taking for this task to complete?
For example: I know that 1000ms is unacceptable for the response of a dialog session on an ERP system.

No one knows - I give up

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Hello Surya
here screenshots from my test:
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also dwload this How to Generic Delta doc https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/84bf4d68-0601-0010-13b5-b062adbb3e33
2.
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sequence number. This may result in some records being processed more than once;
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Thanks & Regards
Kiran

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http://download.oracle.com/docs/cd/E12524_01/relnotes.1013/e12523/adapters.htm#CHDGFAAB
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I have tried with 20 mb file, it works. But I want to know the upper limit.
Thanks,
Amit

Tried with 31 mb file.
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ORABPEL-02182
JTA transaction is not present or the transaction is not in active state.
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at com.collaxa.cube.engine.CubeEngine.store(CubeEngine.java:5514)
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Not easy to give a perfect answer
1. Create unique RFC destinations for every port defined in SAP for external applications as Biztalk for as many connections. ( This would mean one for inbound, one for outbound)
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3. Create RFC destinations based on the modules it links with such as materials management, sales and distribution, warehouse management. This would ensure we can limit the number of RFC to be created and make it simple to understand the flow of data.
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Threshold upper limit for dialog+rfc in BW server

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