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BUG: Parameters That Are Larger Than 4095 Cause System.InvalidOperationException


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Symptoms

When you use the OLE DB Provider for DB2 (DB2OLEDB) from a .NET Framework application with the Managed Provider for OLEDB, if you pass a parameter larger than 4095 (that is, 4096 or higher), you receive a System.InvalidOperationException error.

This exception contains:
  • An inner exception of type System.Data.OleDb.OleDbException
    with an HRESULT of 0x80040E21 (-2147217887)
  • The following error message:
Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.

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Cause

In the .NET Framework, if the parameter is larger than 4095, when the Managed Provider for OLEDB passes the DBPARAMS structure to DB2OLEDB, the parameter is passed as DBTYPE_BYREF.

For example, if the parameter is type OleDbType.Char, the Managed Provider for OLEDB passes this as type 0x4082 (DBTYPE_WSTR && DBTYPE_BYREF), instead of as 0x82 (DBTYPE_WSTR). The OLE DB Provider for DB2 does not support DBTYPE_BYREF. Therefore, data conversion does not succeed and you receive the error

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Keywords: KB819759, kbbug, kbnofix

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Article Info
Article ID : 819759
Revision : 3
Created on : 2/22/2007
Published on : 2/22/2007
Exists online : False
Views : 364