DEV-13: You've Got a Problem, Here

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DEV-13 You've Got a Problem, Heres How to Find
It

• Problem diagnosis debugging

Peter Judge
Principal Software Engineer OpenEdge
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Agenda

• Introduction
• Debugging tools
• Debugging situations

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What are we trying to find and fix?

• Bugs
• Incomplete features
• Resource issues
• Memory leaks
• Performance issues
• Queries, especially dynamic

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Agenda

• Introduction
• Debugging tools
• Debugging scenarios

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Debugging tools

• OpenEdge Debugger
• MESSAGE statement
• Logging framework
• LogRead utility
• ProSpy Plus
• Profiler

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OpenEdge Debuggers

• Java based
• Runs on Linux, Unix Windows too
• Variants
• GUI Debugger (runs on all platforms)
• OpenEdge Debugger Perspective (Windows only)
• Local remote debugging
• Attach to OpenEdge runtime

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Whats available in the debugger?

• See and change variables, parameters
• Runtime object inspection
• Pseudo-objects too
• Stack trace
• Break points
• Line
• Error
• Watchpoint
• Expression watches

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The OpenEdge Debugger Perspective

• Leverages Eclipse Debug Framework
• Allows non-modal debugging
• Multiple concurrent debug sessions
• Persists breakpoints and settings
• Invoke using launch configs
• Needs r-code, but
• Compiler debug listings not required
• Can add missing source code
• Simplified inspection of complex objects

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The GUI Debugger

• Launch it
• AppBuilder, Procedure Editor, TTY editor
• Compile ? Debug
• Attach AppServer code from client
• Invoke it
• DEBUGGER system handle
• Initiate debugging in AppServer or WebSpeed code
• -debugalert MESSAGE statement
• Step into AppServer code

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The Attachable Debugger

• No need to modify code to launch debugger
• Great when source code unavailable
• Also useful when
• The servers in another office
• Theres no monitor attached
• Its just easier to debug from where you are

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Agenda

• Introduction
• Debugging tools
• Debugging situations

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Under Development

• This talk includes information about potential
  future products and/or product enhancements.
• What I am going to say reflects our current
  thinking, but the information contained herein is
  preliminary and subject to change. Any future
  products we ultimately deliver may be materially
  different from what is described here.

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DEMO Memory leaks

• Debugger overview
• Persistent procedures
• Buffers, temp-tables, ProDataSets
• UI Widgets
• Queries
• MEMPTRs

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DEMO Debugging across an AppServer

• Attachable debugger
• Enabling debugger for attachment
• Different machine/same machine
• Can step into AppServer code from GUI
• Logging
• Log-manager
• Logging in launch configurations

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DEMO Debugging on different platforms

• Enabling debugging
• GUI debugger
• Linux, Windows
• Architect debugger perspective
• Windows

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DEMO Debugging WebSpeed

• Log inspection
• Multiple logs to inspect
• WebSpeed broker server, web server logs
• LogRead
• Messages
• Environment vars?

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DEMO Debugging performance issues

• Indexes/queries
• Compile xref
• Index-information
• Call / execution stack

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In Summary

• Debuggers
• GUI Debugger
• OpenEdge Debugger Perspective
• Other tools
• Log manager

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For More Information, go to

• PSDN
• LogRead 1.0 Tool Overview (English Spanish)  
• http//www.psdn.com/library/entry.jspa?categoryID
  62externalID1841
• Log Read Utility
• http//www.psdn.com/library/entry.jspa?categoryID
  41externalID349
• Documentation
• OpenEdge Development Debugging and
  Troubleshooting
• OpenEdge Deployment Startup Command and
  Parameter Reference

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Relevant Exchange Sessions
Presented at psdnlive08

• OPS-6 Caring for an Ailing AppServer
• OPS-15 What was Happening with My Database,
  AppServer, Operating System. . . Yesterday, Last
  Month, Last Year?
• OPS-17 Utilizing Firewalls - In the Reign of
  Fire

Presented at Exchange, available on PSDN
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?
Questions
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Thank You
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