diff --git a/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java b/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
index c9f77ce50c..c665fe0e2e 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
@@ -569,7 +569,8 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
         print("SELECT ");       
 
         if (x.getHints().size() > 0) {           
-            printAndAccept(x.getHints(), ", ");           
+            printAndAccept(x.getHints(), ", ");      
+            print(' ');
         }
         
         if (SQLSetQuantifier.ALL == x.getDistionOption()) {
diff --git a/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java b/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
index 6977ec3573..240be1f789 100644
--- a/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
@@ -1301,7 +1301,7 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter {
     public boolean visit(SQLCommentHint x) {
         print("/*");
         print(x.getText());
-        print("*/ ");
+        print("*/");
         return false;
     }