OracleCommandBuilder create InsertComman with wrong parameters

Question

I have a simple table:
CREATE TABLE test_b (a NUMBER);
Then I create command for inserting data to this:
DbProviderFactory factory = DbProviderFactories.GetFactory("Oracle.DataAccess.Client");
using (DbConnection connection = factory.CreateConnection())
connection.ConnectionString = "User Id=apolyakov;Password=oracle;Data Source=OPE";
connection.Open();
using (DbDataAdapter adapter = factory.CreateDataAdapter())
adapter.SelectCommand = connection.CreateCommand();
adapter.SelectCommand.CommandText = "select * from test_b";
using (DbCommandBuilder builder = factory.CreateCommandBuilder())
builder.DataAdapter = adapter;
using (var command = builder.GetInsertCommand())
command.Parameters[0].Value = 1;
command.ExecuteNonQuery();
ExecuteNonQuery throw OracleTruncateException "truncated result".
System: ODAC 11.1, .NET 2.0, WinXP, Database 10g2

Answer 1

I've encountered the exact same problem. The issue seems to be with inserting into a column of type "NUMBER". Despite the fact that System.Decimal is actually a smaller type, and there's no danger of truncation, the Update command of OracleDataAdapter seems to be unable to handle this conversion.
What's worse, even if you convert the column in the datatable and all the data to Oracle.DataAccess.Types.OracleDecimal, the result is the same. Right now OracleDataAdapter.Update seems hopelessly broken for inserting into NUMBER columns.
.NET 4.0 Oracle 11g
Edited by: 903858 on Dec 21, 2011 1:16 PM
Edited by: 903858 on Dec 21, 2011 1:18 PM