diff --git a/jOOQ/src/main/java/org/jooq/exception/LoaderConfigurationException.java b/jOOQ/src/main/java/org/jooq/exception/LoaderConfigurationException.java
new file mode 100644
index 0000000000..de6192538c
--- /dev/null
+++ b/jOOQ/src/main/java/org/jooq/exception/LoaderConfigurationException.java
@@ -0,0 +1,66 @@
+/**
+ * Copyright (c) 2009-2015, Data Geekery GmbH (http://www.datageekery.com)
+ * All rights reserved.
+ *
+ * This work is dual-licensed
+ * - under the Apache Software License 2.0 (the "ASL")
+ * - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
+ * =============================================================================
+ * You may choose which license applies to you:
+ *
+ * - If you're using this work with Open Source databases, you may choose
+ *   either ASL or jOOQ License.
+ * - If you're using this work with at least one commercial database, you must
+ *   choose jOOQ License
+ *
+ * For more information, please visit http://www.jooq.org/licenses
+ *
+ * Apache Software License 2.0:
+ * -----------------------------------------------------------------------------
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * jOOQ License and Maintenance Agreement:
+ * -----------------------------------------------------------------------------
+ * Data Geekery grants the Customer the non-exclusive, timely limited and
+ * non-transferable license to install and use the Software under the terms of
+ * the jOOQ License and Maintenance Agreement.
+ *
+ * This library is distributed with a LIMITED WARRANTY. See the jOOQ License
+ * and Maintenance Agreement for more details: http://www.jooq.org/licensing
+ */
+package org.jooq.exception;
+
+import org.jooq.Loader;
+
+/**
+ * The <code>LoaderConfigurationException</code> indicates that a {@link Loader}
+ * was executed with an illegal execution configuration.
+ *
+ * @author Lukas Eder
+ */
+public class LoaderConfigurationException extends DataAccessException {
+
+    /**
+     * Generated UID
+     */
+    private static final long serialVersionUID = 1070990582126075536L;
+
+    /**
+     * Constructor for LoaderConfigurationException.
+     *
+     * @param message the detail message
+     */
+    public LoaderConfigurationException(String message) {
+        super(message);
+    }
+}
diff --git a/jOOQ/src/main/java/org/jooq/impl/LoaderImpl.java b/jOOQ/src/main/java/org/jooq/impl/LoaderImpl.java
index 51a598c92d..d7486c54d1 100644
--- a/jOOQ/src/main/java/org/jooq/impl/LoaderImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/LoaderImpl.java
@@ -73,6 +73,7 @@ import org.jooq.SelectQuery;
 import org.jooq.Table;
 import org.jooq.TableRecord;
 import org.jooq.exception.DataAccessException;
+import org.jooq.exception.LoaderConfigurationException;
 import org.jooq.tools.StringUtils;
 import org.jooq.tools.csv.CSVParser;
 import org.jooq.tools.csv.CSVReader;
@@ -390,6 +391,8 @@ class LoaderImpl<R extends TableRecord<R>> implements
 
     @Override
     public final LoaderImpl<R> execute() throws IOException {
+        checkFlags();
+
         if (content == CONTENT_CSV) {
             executeCSV();
         }
@@ -406,6 +409,11 @@ class LoaderImpl<R extends TableRecord<R>> implements
         return this;
     }
 
+    private void checkFlags() {
+        if (batch != BATCH_NONE && onDuplicate == ON_DUPLICATE_KEY_IGNORE)
+            throw new LoaderConfigurationException("Cannot apply batch loading with onDuplicateKeyIgnore flag. Turn off either flag.");
+    }
+
     private void executeJSON() throws IOException {
         JSONReader reader = new JSONReader(data);