在开发框架中扩展微软企业库，支持使用ODP.NET（Oracle.ManagedDataAccess.dll）访问Oracle数据库

using System;
using System.Data;
using System.Data.Common;

using Microsoft.Practices.EnterpriseLibrary.Common;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Microsoft.Practices.EnterpriseLibrary.Data.Configuration;
using Oracle.ManagedDataAccess.Client;

namespace EntLibContrib.Data.OracleManaged
{
    /// <summary>
    /// <para>Oracle数据库对象(使用ODP驱动)</para>
    /// </summary>
    /// <remarks>
    /// <para>
    /// Internally uses OracleProvider from Oracle to connect to the database.
    /// </para>
    /// </remarks>
    [DatabaseAssembler(typeof(OracleDatabaseAssembler))]
    public class OracleDatabase : Database
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="OracleDatabase"/> class
        /// with a connection string.
        /// </summary>
        /// <param name="connectionString">The connection string.</param>
        public OracleDatabase(string connectionString) : base(connectionString, OracleClientFactory.Instance)
        {
        }
        
        /// <summary>
        /// <para>
        /// Gets the parameter token used to delimit parameters for the
        /// Oracle database.</para>
        /// </summary>
        /// <value>
        /// <para>The '?' symbol.</para>
        /// </value>
        protected char ParameterToken
        {
            get
            {
                return ':';
            }
        }

        .........

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data"/>
    <section name="oracleConnectionSettings" type="EntLibContrib.Data.OdpNet.Configuration.OracleConnectionSettings, EntLibContrib.Data.OdpNet" />
  </configSections>
  <connectionStrings>
    <!--SQLServer数据库的连接字符串-->
    <add name="sqlserver" providerName="System.Data.SqlClient" connectionString="Persist Security Info=False;Data Source=(local);Initial Catalog=WinFramework;Integrated Security=SSPI"/>
    
    <!--Oracle数据库的连接字符串-->
    <add name="oracle" providerName="System.Data.OracleClient" connectionString="Data Source=orcl;User ID=whc;Password=whc"/>
    
    <!--MySQL数据库的连接字符串-->
    <add name="mysql" providerName="MySql.Data.MySqlClient" connectionString="Server=localhost;Database=WinFramework;Uid=root;Pwd=123456;"/>
    
    <!--PostgreSQL数据库的连接字符串-->
    <add name="npgsql" providerName="Npgsql" connectionString="Server=localhost;Port=5432;Database=postgres;User Id=postgres;Password=123456"/>
    
    <!--路径符号|DataDirectory|代表当前运行目录-->    
    <!--SQLite数据库的连接字符串-->
    <add name="sqlite"  providerName="System.Data.SQLite" connectionString="Data Source=|DataDirectory|\WinFramework.db;Version=3;" />
    <!--Microsoft Access数据库的连接字符串-->
    <add name="access" providerName="System.Data.OleDb" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\WinFramework.mdb;User ID=Admin;Jet OLEDB:Database Password=;" />   
    
    <!--IBM DB2数据库的连接字符串-->
    <add    name="db2" providerName="IBM.Data.DB2"    connectionString="database=whc;uid=whc;pwd=123456"/>
    
    <!--采用OdpNet方式的Oracle数据库的连接字符串-->
    <add    name="oracle2"    providerName="Oracle.DataAccess.Client"    connectionString="Data Source=orcl;User id=win;Password=win;" />
    <add    name="oracle3"    providerName="OracleManaged"    connectionString="Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl.mshome.net)));User ID=win;Password=win" />
  </connectionStrings>
  <dataConfiguration defaultDatabase="oracle3">
    <providerMappings>
      <add databaseType="EntLibContrib.Data.MySql.MySqlDatabase, EntLibContrib.Data.MySql" name="MySql.Data.MySqlClient" />
      <add databaseType="EntLibContrib.Data.SQLite.SQLiteDatabase, EntLibContrib.Data.SqLite" name="System.Data.SQLite" />
      <add databaseType="EntLibContrib.Data.PostgreSql.NpgsqlDatabase, EntLibContrib.Data.PostgreSql" name="Npgsql" />      
      <add databaseType="EntLibContrib.Data.DB2.DB2Database, EntLibContrib.Data.DB2" name="IBM.Data.DB2" />
      <add databaseType="EntLibContrib.Data.OdpNet.OracleDatabase, EntLibContrib.Data.OdpNet" name="Oracle.DataAccess.Client" />
      <add databaseType="EntLibContrib.Data.Dm.DmDatabase, EntLibContrib.Data.Dm" name="Dm" />
      <!--增加ODP.NET（Oracle.ManagedDataAccess.dll）方式的扩展支持-->
      <add databaseType="EntLibContrib.Data.OracleManaged.OracleDatabase, EntLibContrib.Data.OracleManaged" name="OracleManaged" />
    </providerMappings>
  <https://img.qb5200.com/download-x/dataConfiguration>
  
  <appSettings>

  </appSettings>
  <startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
    <supportedRuntime version="v2.0.50727"/>
  </startup>
</configuration>

private void btnGetData_Click(object sender, EventArgs e)
{
    string sql = "select * from T_Customer";// + " Where Name = :name";
    Database db = DatabaseFactory.CreateDatabase();
    DbCommand command = db.GetSqlStringCommand(sql);
    //command.Parameters.Add(new OracleParameter("name", "张三"));

    using (var ds = db.ExecuteDataSet(command))
    {
        this.dataGridView1.DataSource = ds.Tables[0];   
    }
}