Learn how to debug

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Fabrício Catae

Apresentação interna sobre Debugging usando o Windbg

Tecnologia

Fabricio Catae
Premier Field Engineer
Learn Debugging
in 60 minutes
For SQL Server professionals

Who I am
Me Microsoft Travel
Weekends Baseball Friends

Software Bugs
Impossível evitá-los...
Erros Genéricos
Sempre podem ocorrer...
Afetam qualquer pessoa
Qual ação tomar?

Solução: Debugging
Dump Files
• Cópia da memória da aplicação
• Guarda informação das threads
Usado somente como último recurso

Agenda: Learn Debugging
Basic Advanced Real World Scenarios
in 60
minutes

SQL Requests
Easy to find the problem – see the wait type

Where to Find Symbols?
http://msdl.microsoft.com/download/symbols
http://symweb

Stack Analysis
Slow Performance
Start looking the DLL’s involved
Identify the transitions
Find the wait type

Thread Analysis
SyncDriverEnter RequestOCIWork ?

Problem Analysis
PAGEIOLATCH_SH PAGEIOLATCH_EX

Debugging Skill
Product internals
Problem Solving with WinDBG
Assembly language
Windows programming
Ramp-up: 1-2 years

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