diff --git a/hibernate-core/src/main/java/org/hibernate/dialect/identity/Oracle12cIdentityColumnSupport.java b/hibernate-core/src/main/java/org/hibernate/dialect/identity/Oracle12cIdentityColumnSupport.java
index 8f5d3e1b25..c0990d68b7 100644
--- a/hibernate-core/src/main/java/org/hibernate/dialect/identity/Oracle12cIdentityColumnSupport.java
+++ b/hibernate-core/src/main/java/org/hibernate/dialect/identity/Oracle12cIdentityColumnSupport.java
@@ -33,4 +33,9 @@ public class Oracle12cIdentityColumnSupport extends IdentityColumnSupportImpl {
 			PostInsertIdentityPersister persister, Dialect dialect) {
 		return new Oracle12cGetGeneratedKeysDelegate( persister, dialect );
 	}
+
+	@Override
+	public String getIdentityInsertString() {
+		return "default";
+	}
 }