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[Oracle] SQL*Net researching - Setting Session Data Unit (SDU) size and how it can go wrong


I come across this SDU issue from time to time by doing oracle database consulting work and so i think it is worth to write a blog about it. Basically this blog is about how to verify that the SDU setting is considered (or not) at all. It also covers some basics and SAP suggestions.


Lets' start with an explanation and some SAP information about the SDU, before we go on with researching and testing several settings.