diff --git a/Post/Post/ProcessDatabase.cs b/Post/Post/ProcessDatabase.cs
new file mode 100644
index 0000000000000000000000000000000000000000..1de32bc87e7f646b6bbc7c8284894ad11b0e5656
--- /dev/null
+++ b/Post/Post/ProcessDatabase.cs
@@ -0,0 +1,169 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using System.Data.SqlClient;    // SqlConnection
+using Oracle.ManagedDataAccess.Client;
+using System.Data;              // ConnectionState, DataTable
+
+namespace Post
+{
+    public class ProcessDatabase
+    {
+        public ExecuteOracleDatabase executeOracle;
+        public ExecuteSqlserverDatabase executeSqlserver;
+
+        public string DB_TYPE { get; set; }
+
+        public ProcessDatabase(string type)
+        {
+            DB_TYPE = type;
+        }
+
+        #region ConnectionDB() : db connection
+        //public bool ConnectionDB(string ip, int port, string dbname, string username, string password)
+        public Object ConnectionDB(string ip, int port, string dbname, string username, string password)
+        {
+            ConstValues constValues = new ConstValues();
+            ConstValuesConfig constValuesConfig = new ConstValuesConfig();
+            Object conn = new Object();
+            //bool result = true;
+
+            Console.WriteLine("DB_TYPE : " + DB_TYPE);
+
+            try
+            {
+
+                // conn validation check
+                if (ip.Length == 0)
+                {
+                    ip = Environment.GetEnvironmentVariable("localhost");
+                    Console.WriteLine("localhost : " + ip);
+                } else if (port == 0)
+                {
+                    if (DB_TYPE.Equals(constValues.CONST_DBTYPE_ORACLE, StringComparison.OrdinalIgnoreCase))
+                    {
+                        port = constValuesConfig.CONST_DEFAULT_CONN_PORT_ORACLE;
+                    } else if (DB_TYPE.Equals(constValues.CONST_DBTYPE_MSSQL, StringComparison.OrdinalIgnoreCase))
+                    {
+                        port = constValuesConfig.CONST_DEFAULT_CONN_PORT_SQLSERVER;
+                    }
+                }
+
+                if (DB_TYPE.Equals(constValues.CONST_DBTYPE_ORACLE, StringComparison.OrdinalIgnoreCase))
+                {
+                    conn = ConnectOracle(ip, port, dbname, username, password);
+                }
+                else if (DB_TYPE.Equals(constValues.CONST_DBTYPE_MSSQL, StringComparison.OrdinalIgnoreCase))
+                {
+                    conn = ConnectSqlserver(ip, port, dbname, username, password);
+                }
+
+
+            } catch(Exception e)
+            {
+                Console.WriteLine("connectiondb : " + e.ToString());
+                return null;
+            }
+
+            return conn;
+        }
+        #endregion
+
+        #region ConnectSqlserver() : check sqlserver connection
+        public SqlConnection ConnectSqlserver(string ip, int port, string dbname, string username, string password)
+        {
+            Console.WriteLine("ConnectSqlserver");
+            SqlConnection connection = new SqlConnection();
+
+            string dataSource = String.Format(@"{0},{1}", ip, port);
+            connection.ConnectionString = String.Format("DATA SOURCE={0};Initial Catalog={1};User id={2};Password={3};Pooling={4};Connection TImeout={5};Min Pool Size={6};Max pool Size={7}", dataSource, dbname, username, password, "true", 120, 1, 10);
+            connection.Open();
+            Console.WriteLine("sqlserver state : " + connection.State);
+
+            if (connection.State == ConnectionState.Broken || connection.State == ConnectionState.Closed)
+            {
+                return null;
+            }
+
+            executeSqlserver = new ExecuteSqlserverDatabase(connection);
+            return connection;
+        }
+        #endregion
+
+        #region ConnectOracle() : check oracle connection
+        public OracleConnection ConnectOracle(string ip, int port, string dbname, string username, string password)
+        {
+            Console.WriteLine("ConnectOracle");
+            OracleConnection connection = new OracleConnection();
+            string dataSource = String.Format("{0}:{1}/{2}", ip, port, dbname);
+            connection.ConnectionString = String.Format("DATA SOURCE={0};USER ID={1};Password={2};Pooling={3};Connection Timeout={4};Min Pool Size={5};Max pool Size={6}", dataSource, username, password, "true", 120, 1, 10);
+            connection.Open();
+
+            Console.WriteLine("oracle state : " + connection.State);
+
+            executeOracle = new ExecuteOracleDatabase(connection);
+            return connection;
+        }
+        #endregion
+
+        #region CheckConnState() : check db connection
+        public  bool CheckConnState()
+        {
+            bool result = true;
+            ConstValues constValues = new ConstValues();
+
+            try
+            {
+                ConnectionState state = new ConnectionState();
+                if (DB_TYPE.Equals(constValues.CONST_DBTYPE_ORACLE, StringComparison.OrdinalIgnoreCase))
+                {
+                    state = executeOracle.orclConn.State;
+                } else if (DB_TYPE.Equals(constValues.CONST_DBTYPE_MSSQL, StringComparison.OrdinalIgnoreCase))
+                {
+                    Console.WriteLine("== : " + executeSqlserver.sqlConn.State);
+                    state = executeSqlserver.sqlConn.State;
+                }
+
+                if (state == ConnectionState.Broken || state == ConnectionState.Closed)
+                {
+                    result = false;
+                }
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine("checkConn : " + e.ToString());
+                result = false;
+            }
+
+            return result;
+        }
+        #endregion
+
+        #region DisconnectDB() : db disconnection
+        public void DisconnectDB(String type, Object conn)
+        {
+            Console.WriteLine("database 종료");
+            ConstValues constValues = new ConstValues();
+            try
+            {
+                if (type.Equals(constValues.CONST_DBTYPE_ORACLE, StringComparison.OrdinalIgnoreCase))
+                {
+                    OracleConnection oracleconn = (OracleConnection)conn;
+                    oracleconn.Close();
+                }
+                else if (type.Equals(constValues.CONST_DBTYPE_MSSQL, StringComparison.OrdinalIgnoreCase))
+                {
+                    SqlConnection sqlconn = (SqlConnection)conn;
+                    sqlconn.Close();
+                }
+            } catch(Exception e)
+            {
+                Console.WriteLine("disconn : " + e.ToString());
+            }
+        }
+        #endregion
+    }
+}