diff --git a/Dapper.SimpleCRUD/SimpleCRUD.cs b/Dapper.SimpleCRUD/SimpleCRUD.cs
index 691075c..717a684 100644
--- a/Dapper.SimpleCRUD/SimpleCRUD.cs
+++ b/Dapper.SimpleCRUD/SimpleCRUD.cs
@@ -706,8 +706,13 @@ private static void BuildUpdateSet<T>(T entityToUpdate, StringBuilder masterSb)
                 for (var i = 0; i < nonIdProps.Length; i++)
                 {
                     var property = nonIdProps[i];
+                    var apParamPrefix = "@";
+                    if (_dialect == Dialect.Oracle)
+                    {
+                        apParamPrefix = ":";
+                    }
 
-                    sb.AppendFormat("{0} = @{1}", GetColumnName(property), property.Name);
+                    sb.AppendFormat("{0} = " + apParamPrefix + "{1}", GetColumnName(property), property.Name);
                     if (i < nonIdProps.Length - 1)
                         sb.AppendFormat(", ");
                 }
@@ -744,6 +749,7 @@ private static void BuildWhere<TEntity>(StringBuilder sb, IEnumerable<PropertyIn
             for (var i = 0; i < propertyInfos.Count(); i++)
             {
                 var useIsNull = false;
+                var defaultWhereAttributeStatement = "{0} = @{1}";
 
                 //match up generic properties to source entity properties to allow fetching of the column attribute
                 //the anonymous object used for search doesn't have the custom attributes attached to them so this allows us to build the correct where clause
@@ -762,8 +768,14 @@ private static void BuildWhere<TEntity>(StringBuilder sb, IEnumerable<PropertyIn
                         break;
                     }
                 }
+
+                if (_dialect == Dialect.Oracle)
+                {
+                    defaultWhereAttributeStatement = defaultWhereAttributeStatement.Replace("@", ":");
+                }
+
                 sb.AppendFormat(
-                    useIsNull ? "{0} is null" : "{0} = @{1}",
+                    useIsNull ? "{0} is null" : defaultWhereAttributeStatement,
                     GetColumnName(propertyToUse),
                     propertyToUse.Name);
 
@@ -799,7 +811,13 @@ private static void BuildInsertValues<T>(StringBuilder masterSb)
 
                     if (property.Name.Equals("Id", StringComparison.OrdinalIgnoreCase) && property.GetCustomAttributes(true).All(attr => attr.GetType().Name != typeof(RequiredAttribute).Name) && property.PropertyType != typeof(Guid)) continue;
 
-                    sb.AppendFormat("@{0}", property.Name);
+                    var apParamPrefix = "@";
+                    if (_dialect == Dialect.Oracle)
+                    {
+                        apParamPrefix = ":";
+                    }
+
+                    sb.AppendFormat(apParamPrefix + "{0}", property.Name);
                     if (i < props.Count() - 1)
                         sb.Append(", ");
                 }
@@ -1078,9 +1096,16 @@ public virtual string ResolveColumnName(PropertyInfo propertyInfo)
                 if (columnattr != null)
                 {
                     columnName = Encapsulate(columnattr.Name);
+                    
                     if (Debugger.IsAttached)
                         Trace.WriteLine(String.Format("Column name for type overridden from {0} to {1}", propertyInfo.Name, columnName));
                 }
+
+                if (_dialect == Dialect.Oracle)
+                {
+                    columnName = columnName.ToUpper();
+                }
+
                 return columnName;
             }
         }
diff --git a/Dapper.SimpleCRUD/SimpleCRUDAsync.cs b/Dapper.SimpleCRUD/SimpleCRUDAsync.cs
index ff70770..a112dc0 100644
--- a/Dapper.SimpleCRUD/SimpleCRUDAsync.cs
+++ b/Dapper.SimpleCRUD/SimpleCRUDAsync.cs
@@ -41,27 +41,27 @@ public static async Task<T> GetAsync<T>(this IDbConnection connection, object id
             //create a new empty instance of the type to get the base properties
             BuildSelect(sb, GetScaffoldableProperties<T>().ToArray());
             sb.AppendFormat(" from {0} where ", name);
+            BuildWhere<T>(sb, idProps);
 
-            for (var i = 0; i < idProps.Count; i++)
+            var dynamicParameters = new DynamicParameters();
+            foreach (var property in idProps)
             {
-                if (i > 0)
-                    sb.Append(" and ");
-                sb.AppendFormat("{0} = @{1}", GetColumnName(idProps[i]), idProps[i].Name);
-            }
+                var value = id;
+                if (_dialect == Dialect.Oracle)
+                {
+                    if (Guid.TryParse(value.ToString(), out var result))
+                    {
+                        value = value.ToString();
+                    }
+                }
 
-            var dynParms = new DynamicParameters();
-            if (idProps.Count == 1)
-                dynParms.Add("@" + idProps.First().Name, id);
-            else
-            {
-                foreach (var prop in idProps)
-                    dynParms.Add("@" + prop.Name, id.GetType().GetProperty(prop.Name).GetValue(id, null));
+                dynamicParameters.Add(property.Name, value);
             }
 
             if (Debugger.IsAttached)
                 Trace.WriteLine(String.Format("Get<{0}>: {1} with Id: {2}", currenttype, sb, id));
 
-            var query = await connection.QueryAsync<T>(sb.ToString(), dynParms, transaction, commandTimeout);
+            var query = await connection.QueryAsync<T>(sb.ToString(), dynamicParameters, transaction, commandTimeout);
             return query.FirstOrDefault();
         }