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SDU

My SDU goes to 11 ^h^h I meant 2097152

One of the cool new things in 12.1 is that you can set the Session Data Unit to 2MB. This might not sound like a Big Deal, but getting this to work required me to dig deeper into the TNS layer than I intended…Then I somehow got stuck on the wrong track, thankfully the team at Enkitec helped out here with pointers.

This post is rather boring if you just look at it but it’s probably one of the best examples where a few sentences in writing are vastly different from the time it took to get to the bottom of it. The solution explained here works on our 12.1.0.1.3 Exadata lab system, which is an X2-2 but should likewise be applicable for other configurations.

The Server Setup

My SDU goes to 11 ^h^h I meant 2097152

One of the cool new things in 12.1 is that you can set the Session Data Unit to 2MB. This might not sound like a Big Deal, but getting this to work required me to dig deeper into the TNS layer than I intended…Then I somehow got stuck on the wrong track, thankfully the team at Enkitec helped out here with pointers.

This post is rather boring if you just look at it but it’s probably one of the best examples where a few sentences in writing are vastly different from the time it took to get to the bottom of it. The solution explained here works on our 12.1.0.1.3 Exadata lab system, which is an X2-2 but should likewise be applicable for other configurations.

The Server Setup

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

Introduction

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.