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Status Not under consideration
Workspace Db2
Created by Guest
Created on May 16, 2018

Improve performance of retrieving large result sets

Performance of Db2 client/server communications in a network environment needs to be significantly increased in cases where large amount of data (100s of MB or more) are being moved between Db2 server and remote client.

This needs to be provided not just for utilities (e.g. Db2 export/load), but just as importantly for regular CLI/ODBC/JCC connections used in BI/warehousing environments.

Currently a single "conversation" between Db2 server and networked client takes a fraction of the available network capacity and is much slower then, for example, using FTP or Windows Explorer "copy" utility.

I believe some sort of concurrent/multi-threaded conversation over the network will improve performance, for the same reason that IBM's DownloadDirector that establishes multiple concurrent connections to the download server achieves excellent performance. Or perhaps there is another, better solution to this problem.

I realize this may not be appropriate in all cases (e.g. OLTP environment), so "large answer set" settings may need to be optionally set via CLI configuration parameter or at utility level (e.g. Db2 export or load command) or as part of connection property (e.g. Java or ODBC connection from Cognos).