diff --git a/src/main/java/com/alibaba/druid/util/JdbcConstants.java b/src/main/java/com/alibaba/druid/util/JdbcConstants.java
index 1a85c280aa..ff18aa9111 100644
--- a/src/main/java/com/alibaba/druid/util/JdbcConstants.java
+++ b/src/main/java/com/alibaba/druid/util/JdbcConstants.java
@@ -142,6 +142,9 @@ public interface JdbcConstants {
     DbType GREENPLUM                    = DbType.greenplum;
     String GREENPLUM_DRIVER             = "com.pivotal.jdbc.GreenplumDriver";
 
+    /**
+     * oscar
+     */
     DbType OSCAR                      = DbType.oscar;
     String OSCAR_DRIVER               = "com.oscar.Driver";
 }