Unable to load required component 'Unicows.dll'
英語版 Windows/Adobe Acrobat Reader を使用している外国人社員と PDF 文書を交換したく、日本語版 Windows XP Professional SP1a/Microsoft Word 2003/Adobe Acrobat 7.0 for Windows を用いて PDFMaker 経由で作成した PDF ファイルを上述英語環境(Acrobat Reader 6.0/7.0)で開くと "Unable to load required component 'Unicows.dll'" というエラーが表示され、開く事が出来ません。この障害はエクスプローラーから PDF ファイルをダブルクリックで開くと生じますが、Acrobat Reader 起動後に File -> Open によって PDF ファイルを開くと生じません。
解決しました。
問題は Acrobat では無く、当方の環境に有りました。
日本語版 Windows XP を host OS とし、英語版 Windows XP を guest OS として、host OS 上の C:¥TEMP フォルダーを VMware の host share holder 機能を利用して guest OS に見せていたのですが、この folder を Exploler で参照すると、当該メッセージを出力する事が判明しました。
推測するに、Exploler にはアクセス対象のファイルシステム属性を判断する機能があり、日本語 Windows XP 上では Unicows.dll を必要としないが、(本来 SBCS 環境である)英語 Windows XP では勘違いして Unicows.dll を読み込もうとする模様です(御承知の通り、Windows 2000 以降には Unicows.dll は存在しません)。
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Timestamp: 3/4/2010 12:11:23 PM
Message: HandlingInstanceID: 3d9a795c-1256-44c1-b018-f553d4023b12
An exception of type 'System.TypeInitializationException' occurred and was caught.
03/04/2010 07:11:23
Type : System.TypeInitializationException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : The type initializer for 'Oracle.DataAccess.Types.OracleDecimal' threw an exception.
Source : Oracle.DataAccess
Help link :
TypeName : Oracle.DataAccess.Types.OracleDecimal
Data : System.Collections.ListDictionaryInternal
TargetSite : Void PostBind_Int32()
Stack Trace : at Oracle.DataAccess.Client.OracleParameter.PostBind_Int32()
at Oracle.DataAccess.Client.OracleParameter.PostBind(OracleConnection conn, OpoSqlValCtx* pOpoSqlValCtx, Int32 arraySize)
at Oracle.DataAccess.Client.OracleCommand.ExecuteNonQuery()
at Oracle.DataAccess.Client.OracleCommandBuilder.DeriveParameters(OracleCommand command)
at Microsoft.Practices.EnterpriseLibrary.Data.Odp.OdpDatabase.DeriveParameters(DbCommand discoveryCommand)
at Microsoft.Practices.EnterpriseLibrary.Data.Database.DiscoverParameters(DbCommand command)
Additional Info:
MachineName : MISTERC
TimeStamp : 3/4/2010 12:11:23 PM
FullName : Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=2.0.0.0, Culture=neutral, PublicKeyToken=3f0a163eed2abd49
ThreadIdentity :
WindowsIdentity : NT AUTHORITY\NETWORK SERVICE
Inner Exception
Type : System.DllNotFoundException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : Unable to load DLL 'OraOps10w.dll': Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Source : Oracle.DataAccess
Help link :
TypeName :
Data : System.Collections.ListDictionaryInternal
TargetSite : Int32 AllocValCtxFromNoFmtStr(System.String, IntPtr ByRef)
Stack Trace : at Oracle.DataAccess.Types.OpsDec.AllocValCtxFromNoFmtStr(String numStr, IntPtr& numCtx)
at Oracle.DataAccess.Types.OracleDecimal.GetMaxValue()
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