Today, I ran into an Oracle error that i hadn’t seen before

java.sql.SQLRecoverableException: IO Error: Size Data Unit (SDU) mismatch

Caused by: oracle.net.ns.NetException: Size Data Unit (SDU) mismatch

Environment

Tomcat 7

JDK 1.6

Spring 3.x

Hibernate 4.x

Oracle 11 G

ojdbc6.jar

The fix:

I  tried swapping the JDBC driver with the older ojdbc14.jar and voila ! The real error was exposed : Good old

ORA-00942 (table or view does not exist)

Once I put the table in- everything works fine- with ojdbc14.jar as well ojdbc6.jar

No idea- why the newer driver was not throwing the more descriptive error message ?
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So I finished my second book on Lean : Lean Software development An Agile Toolkit
(The first one was: Lean from the Trenches:Managing Large-Scale projects with Kanban  )

First the recommendation. Absolutely loved it.   4.5/5

The books gives with a decent history of Lean and throughout relates to the amazing success story of TPS ( Toyota Production System) and other  stories from various industries and organizations. The authors present 7 Lean principles as how they are relevant in Software development. Each principle is discussed in detail along with tools on how to apply those principles to Agile Practices. For me – the biggest takeaway was- that you cant  (or shouldn’t try to) bring in practices from Toyota or for that matter from any other organization and even another department in your company. It’s the principles that you should be looking for. The problem is- when you examine other organizations- what is obvious are the practices they follow. It takes a deliberate effort to lift the covers and understand and appreciate the principle behind those practices.

Google has the much coveted 20% time- where they allow developers to spend 20 % of their time on anything they wish to pursue. Any organization who blindly adopts the process- will not be successful – unless you appreciate and adopt the principle behind the process.
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