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    <p>Ok, I think I've figured out what the issue is. In the example above I omitted some additional parameters from my stored proc for berevity. I have other parameters in the query, some of which are of datatype DATE. So, consider the following table...</p> <pre><code> CREATE TABLE TEST (DATE_FIELD DATE, TIMESTAMP_FIELD TIMESTAMP); </code></pre> <p>And the stored procedure...</p> <pre><code>CREATE OR REPLACE PROCEDURE TEST_INSERT ( P_DATE IN DATE, P_TIMESTAMP IN TIMESTAMP ) AS BEGIN INSERT INTO TEST(DATE_FIELD, TIMESTAMP_FIELD) VALUES(P_DATE, P_TIMESTAMP); END TEST_INSERT; </code></pre> <p>And the following c#...</p> <pre><code>using (var cmd = new OracleCommand("TEST_INSERT", conn)) { cmd.CommandType = System.Data.CommandType.StoredProcedure; cmd.Parameters.Add("P_TIMESTAMP", OracleDbType.TimeStamp , new DateTime(2011, 07, 07, 10, 0, 0), System.Data.ParameterDirection.Input); cmd.Parameters.Add("P_DATE", OracleDbType.Date , new DateTime(2011, 07, 08), System.Data.ParameterDirection.Input); cmd.ExecuteNonQuery(); } </code></pre> <p>The result will be... </p> <pre><code>DATE_FIELD: 11-07-07 TIMESTAMP_FIELD: 11-07-08 00:00:00.000000000 </code></pre> <p>So, even though the parameters are named, it seems as though the name of the parameter is irrelevant and that the order in which parameters are added to the Parameters collection in .net will determine the values of the parameters in the stored procedure.</p> <p>So, in the c# snippet if you reverse the order in which the parameters are added to the collection to...</p> <pre><code>cmd.Parameters.Add("P_DATE", OracleDbType.Date , new DateTime(2011, 07, 08), System.Data.ParameterDirection.Input); cmd.Parameters.Add("P_TIMESTAMP", OracleDbType.TimeStamp , new DateTime(2011, 07, 07, 10, 0, 0), System.Data.ParameterDirection.Input); </code></pre> <p>then the result will be...</p> <pre><code>DATE_FIELD: 11-07-08 TIMESTAMP_FIELD: 11-07-07 10:00:000000000 </code></pre>
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    1. POOracle timestamp datatype is missing time information
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    1. USvradenburg
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    1. POOracle timestamp datatype is missing time information
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    1. CODateField can hold time to SECOND as well, the timestamp can hold fractional seconds, so you may not need the timestamp unless you need the precision provided by that.
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      1. USHarrison
    2. COah, very good to know @Harrison. My assumption was that it was just the date, but this was because I had the parameters reversed and the field where I expected time information only had date info. Thanks for your help.
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