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Parameters to tune Networked Communication.

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TitleParameters to tune Networked Communication.
URL Name000031154
Article Number000172282
EnvironmentProduct: OpenEdge
Version: 10.2B06, 11.1.x
OS: All Supported Operating Systems
Other: Network Communication
Question/Problem Description
Parameters to tune Networked Communication.
Are there any parameters that can be used to tune Network Communication?
Apart from -Mm, are there any other parameters to tune Network Communication performance?
What parameters can be used to tune Network Communication between ABL client and server processes?
What is the -prefetchDelay parameter?

What is the -prefetchFactor parameter?
What is the -prefetchNumRecs parameter?
What is the -prefetchPriority parameter?
What is the -Nmsgwait parameter?
Steps to Reproduce
Clarifying Information
Error Message
Defect NumberEnhancement PSC00240005 / OE00215538
Enhancement Number
Database startup parameters were introduced in OpenEdge Service Pack 10.2B06 and 11.1.0, ease the cost of networked communication in large scale deployments.  These parameters enable fine tuning the behavior of message packing for prefetch queries as well as how often the poll() system call is triggered.
The following database startup parameters are available for Enterprise licenses only:
  • -prefetchDelay
  • -prefetchFactor <n> 
  • -prefetchNumRecs <n> 
  • -prefetchPriority <n>  
  • -Nmsgwait <n> 
Details on setting and monitoring these parameters and their interactions are provided in Web paper titled, "Database startup parameters to tune networked communication" available from ESD (Electronic Software Distribution) site.

This document has also been attached to this Article for your convenience.
References to Other Documentation:

OpenEdge Data Management: Database Administration, Maintaining and Monitoring Your Database, Network Communication

Progress User Assistance. OpenEdge: Tuning Network Communication for Performance. YouTube, YouTube, 30 May 2016,
Last Modified Date10/12/2018 9:15 AM
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