diff --git a/src/main/java/com/alibaba/druid/wall/spi/WallVisitorUtils.java b/src/main/java/com/alibaba/druid/wall/spi/WallVisitorUtils.java
index 15d77f9f3e..f2916b1d13 100644
--- a/src/main/java/com/alibaba/druid/wall/spi/WallVisitorUtils.java
+++ b/src/main/java/com/alibaba/druid/wall/spi/WallVisitorUtils.java
@@ -2724,6 +2724,12 @@ public class WallVisitorUtils {
             }
         }
 
+        if ((!isWhite) && visitor.getDbType() == DbType.oracle) {
+            if (text.startsWith("+")) {
+                isWhite = true;
+            }
+        }
+
         if (!isWhite) {
             addViolation(visitor, ErrorCode.EVIL_HINTS, "hint not allow", x);
         }
diff --git a/src/test/java/com/alibaba/druid/bvt/filter/wall/oracle/OracleWallTest.java b/src/test/java/com/alibaba/druid/bvt/filter/wall/oracle/OracleWallTest.java
index 64789100ad..ce176bdf5a 100644
--- a/src/test/java/com/alibaba/druid/bvt/filter/wall/oracle/OracleWallTest.java
+++ b/src/test/java/com/alibaba/druid/bvt/filter/wall/oracle/OracleWallTest.java
@@ -27,10 +27,17 @@ public class OracleWallTest extends TestCase {
     public void testWall() throws Exception {
         WallConfig config = new WallConfig();
         config.setSelectUnionCheck(true);
-        Assert.assertTrue(WallUtils.isValidateOracle("select f1, f2 from t where c=1 union select 1, 2",config));
-        Assert.assertFalse(WallUtils.isValidateOracle("select f1, f2 from t where c=1 union select 1, 2 --",config));
+        assertTrue(WallUtils.isValidateOracle("select f1, f2 from t where c=1 union select 1, 2",config));
+        assertFalse(WallUtils.isValidateOracle("select f1, f2 from t where c=1 union select 1, 2 --",config));
         
-        Assert.assertFalse(WallUtils.isValidateOracle("SELECT * FROM T UNION select * from TAB"));
-        Assert.assertFalse(WallUtils.isValidateOracle("SELECT * FROM T UNION select * from ALL_TABLES where (1=1 or (1+1)=2) and (4=8 or 1=1)"));
+        assertFalse(WallUtils.isValidateOracle("SELECT * FROM T UNION select * from TAB"));
+        assertFalse(WallUtils.isValidateOracle("SELECT * FROM T UNION select * from ALL_TABLES where (1=1 or (1+1)=2) and (4=8 or 1=1)"));
+    }
+
+    public void testWall_1() throws Exception {
+        WallConfig config = new WallConfig();
+        
+        assertTrue(
+                WallUtils.isValidateOracle("select/*+QUERY_TIMEOUT(600000000)*/ * from test_number",config));
     }
 }