Try deleting Conf/.cache
You can add --no-cache to the build command.

I don't know what the root cause is, probably some threading issue. It would be 
nice if the tools would just fix this error (delete cache and rebuild it)

Sent from my iPhone

> On Jun 5, 2015, at 8:48 AM, Roberts, Bruce (CoSpgs) <bruce.robe...@hp.com> 
> wrote:
> 
> Good morning.
>  
> We have been seeing this sort of problem for some time and a build retry 
> seemed to work but now this is getting worse and it can take 10 retries or 
> more to get a build to work.  I am not sure how to begin debugging the 
> toolset so I wanted to ask for some suggestions or help.  I have found some 
> information about rebuilding the Python tool set with the freeze tool but so 
> far that tool has proven elusive.  Notes I have refer to running exe files to 
> accomplish that but the version I installed has nothing by Python scripts and 
> did not install where it indicated it would so I am still trying to figure 
> that out.
>  
> But the root problems I am trying to solve is the operational error shown 
> here.  As requested the Python error stack is included.
>  
> *********************
> * 64-bit UEFI build *
> *********************
> G:\uefi_Hurricane
> Get UEFI Build Data, Version 1.7, Built Dec 16 2014
> - Recognized build type argument: Release (2)
> - Generating Rev & Build data in: 
> G:\uefi_Hurricane\Build\RomleyPkg\DEBUG_VS2008x86\FV\HPUefiVersion.bin
> - Parsing the UEFI code from: G:\uefi_Hurricane\...
> Build environment: Windows-Vista-6.1.7601
> Build start time: 07:43:23, Jun.05 2015
>  
> WORKSPACE                = g:\uefi_hurricane
> ECP_SOURCE               = g:\uefi_hurricane\edkcompatibilitypkg
> EDK_SOURCE               = g:\uefi_hurricane\edkcompatibilitypkg
> EFI_SOURCE               = g:\uefi_hurricane\r8romleypkg
> EDK_TOOLS_PATH           = g:\uefi_hurricane\basetools
>  
> TARGET_ARCH              = IA32 X64
> TARGET                   = DEBUG
> TOOL_CHAIN_TAG           = VS2008x86
>  
> Active Platform          = g:\uefi_hurricane\RomleyPkg\RomleyPkg.dsc
> Flash Image Definition   = g:\uefi_hurricane\RomleyPkg\RomleyPkg.fdf
>  
> Processing meta-data ......
>  
>  
> build...
> : error C0DE: Unknown fatal error when processing 
> [g:\uefi_hurricane\RomleyPkg\RomleyPkg.dsc]
>        
> (Please send email to edk2-buildtools-de...@lists.sourceforge.net for help, 
> attaching following call stack trace!)
>  
> (Python 2.5.2 on win32) Traceback (most recent call last):
>   File "build.py", line 1863, in Main
>   File "build.py", line 1628, in Launch
>   File "build.py", line 1463, in _MultiThreadBuildPlatform
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\AutoGen\AutoGen.py", line 
> 83, in __new__
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\AutoGen\AutoGen.py", line 
> 190, in _Init
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\AutoGen\AutoGen.py", line 
> 533, in CollectPlatformDynamicPcds
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\AutoGen\AutoGen.py", line 
> 2142, in _GetLibraryPcdList
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\AutoGen\AutoGen.py", line 
> 2120, in _GetLibraryList
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\AutoGen\AutoGen.py", line 
> 1073, in lyLibraryInstance
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\Workspace\WorkspaceDatabase.py",
>  line 2221, in __getitem__
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\Workspace\WorkspaceDatabase.py",
>  line 2470, in __getitem__
>   File 
> "C:\NightlyTest\FreezeTool\BaseTools\Source\Python\Workspace\MetaDataTable.py",
>  line 65, in Create
> OperationalError: unable to open database file
>  
>  
> - Failed -
> Build end time: 07:43:31, Jun.05 2015
> Build total time: 00:08
> R. Bruce Roberts 
> Systems/Software Engineer
> Utility Development Unit / HP Storage
> Hewlett-Packard Company
> 719-548-2736 or 719-551-3303 
> bruce.robe...@hp.com 
> 
>  
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