Anyone some info on how and when to use SafeMapping ?

Tried: "MYCOL", "String"
and "MYCOL", "System.String"
MYCOL is a VARCHAR2
{System.InvalidCastException}
[System.InvalidCastException]: {System.InvalidCastException}
Object: {System.InvalidCastException}
_COMPlusExceptionCode: -532459699
_className: Nothing
_exceptionMethod: Nothing
_exceptionMethodString: Nothing
_message: "Specified cast is not valid."
_innerException: Nothing
_helpURL: Nothing
_stackTrace: {System.Array}
_stackTraceString: Nothing
_remoteStackTraceString: Nothing
_remoteStackIndex: 0
_HResult: -2147467262
_source: Nothing
_xptrs: 0
_xcode: -532459699
Message: "Specified cast is not valid."
InnerException: Nothing
TargetSite: {System.Reflection.RuntimeMethodInfo}
StackTrace: " at Oracle.DataAccess.Client.OracleDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
at Oracle.DataAccess.Client.OracleDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable)
at GetTrailBlank.GetTrailingBlank.Button1_Click(Object sender, EventArgs e) in E:\DevProjs\VSNet\GetTrailBlank\GetTrailBlank.vb:line 103"
HelpLink: ""
Source: "Oracle.DataAccess"
HResult: -2147467262

For how to use Safe Type Mapping you can refer
Safe Type Mapping Sample at
http://otn.oracle.com/sample_code/tech/windows/odpnet/content.html
When to use :
Safe Type Mapping is a feature that allows OracleDataAdapter to populate a DataSet with .NET type representations of Oracle data without any data or precision loss. ODP.NET defines corruptible types (DATE, TIMESTAMP, INTERVAL DAY TO SECOND and NUMBER types) which can potentially loose precision when converted to their corresponding .NET types during database operations. By using the Safe Type Mapping feature of ODP.NET these types can be safely retrieved as String or a byte array as against their default .NET types in the DataSet to avoid precision loss.
HTH
Jagriti

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