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Frequently Asked Questions

'External Exception C0000008' or 'Access Violation'


"External Exception C0000008" or "Access Violation" error with 2.3.3 SQL NET client: I get an Access Violation with Delphi 3 and an External Exception error with Delphi 2 when connecting to an Oracle server when in Delphi's IDE or Turbo Debugger with NT4. If I run the application alone, it executes correctly. How do I get around the problem?


Borland has determined that this is a problem with SQL NET
2.3.3. Oracle also recognizes this as a SQL NET problem. There
are a couple of workarounds:
  1. Rename or remove the registry entry HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\OTRACE73 NOTE: This is the solution that Oracle support recommends!
  2. Start Oracle's Installer and remove the "Oracle Trace collection Serveces 7.3.3.x.x"
  3. Turn off Integrated Debugging in Delphi's IDE
  4. Use an Oracle SQL NET that is older than 2.3.3

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