Message: Attempted to read or write protected memory. This is often an indication that other memory

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//z 2012-08-10 17:33:09 IS2120@csdn.T3850797830[T70,L664,R22,V685]

总是遇到这个异常，暂无解决方案

//z 2012-08-13 17:07:41 IS2120@csdn.T2028960486[T86,L1205,R32,V819]

改用新的jet engine，可以避开该问题。

//z 2012-08-10 17:33:09 IS2120@csdn.T3850797830[T70,L664,R22,V685]

[1240] ____#0 Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

[1240] !StackTrace # at System.Data.Common.UnsafeNativeMethods.ICommandText.Execute(IntPtr pUnkOuter, Guid& riid, tagDBPARAMS pDBParams, IntPtr& pcRowsAffected, Object& ppRowset)

[1240] at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult)

[1240] at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult)

[1240] at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult)

[1240] at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method)

[1240] at System.Data.OleDb.OleDbCommand.ExecuteNonQuery()

用windbg看了下，具体而表面的原因是msjet40.dll内部出错了，传给 wcscpy 的两个参数都存在问题

FAULTING_IP:

msjet40!wcscpy+12

1b00b5d7 668908 mov word ptr [eax],cx

EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)

ExceptionAddress: 1b00b5d7 (msjet40!wcscpy+0x00000012)

ExceptionCode: c0000005 (Access violation)

ExceptionFlags: 00000000

NumberParameters: 2

Parameter[0]: 00000001

Parameter[1]: 00000000

Attempt to write to address 00000000

//z 2012-08-13 17:07:41 IS2120@csdn.T2028960486[T86,L1205,R32,V819]

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

EXCEPTION_CODE_STR: c0000005

EXCEPTION_PARAMETER1: 00000001

EXCEPTION_PARAMETER2: 00000000

WRITE_ADDRESS: 00000000

FOLLOWUP_IP:

msjet40!wcscpy+12

1b00b5d7 668908 mov word ptr [eax],cx

WATSON_BKT_MODULE: msjet40.dll

WATSON_BKT_MODVER: 4.0.9511.0

MODULE_VER_PRODUCT: Microsoft (R) Jet

BUILD_VERSION_STRING: 5.1.2600.5781 (xpsp_sp3_gdr.090321-1317)

MANAGED_STACK:

(TransitionMU)

0022E0CC 146B7E37 System_Data_ni!System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(System.Data.OleDb.tagDBPARAMS, System.Object ByRef)+0xe3

0022E0EC 146B7FFD System_Data_ni!System.Data.OleDb.OleDbCommand.ExecuteCommandText(System.Object ByRef)+0xbd

0022E124 146B7347 System_Data_ni!System.Data.OleDb.OleDbCommand.ExecuteCommand(System.Data.CommandBehavior, System.Object ByRef)+0x3b

0022E138 146B70A2 System_Data_ni!System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(System.Data.CommandBehavior, System.String)+0xa2

0022E17C 146B7B42 System_Data_ni!System.Data.OleDb.OleDbCommand.ExecuteNonQuery()+0x72

//z 2012-08-13 17:07:41 IS2120@csdn.T2028960486[T86,L1205,R32,V819]