diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest.java
index 7b63e9bee1..3a66936aeb 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest.java
@@ -32,7 +32,8 @@ public class OracleExceptionSorterTest extends TestCase {
         dataSource.setFilters("log4j");
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn.java
index 0dc952e2f5..eda5aa3b1c 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_closeConn extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_1.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_1.java
index 3b7df781d7..f3f8638e83 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_1.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_1.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_closeConn_1 extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_2.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_2.java
index 2ca1148c40..8e6ace6ad7 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_2.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_2.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_closeConn_2 extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_3.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_3.java
index 833d4373c4..8d1084f526 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_3.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeConn_3.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_closeConn_3 extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeStmt.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeStmt.java
index 6d5b30deca..7e707d3bc3 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeStmt.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_closeStmt.java
@@ -11,6 +11,7 @@ import com.alibaba.druid.mock.MockConnection;
 import com.alibaba.druid.pool.DruidDataSource;
 import com.alibaba.druid.pool.DruidPooledConnection;
 import com.alibaba.druid.pool.vendor.OracleExceptionSorter;
+import com.alibaba.druid.stat.DruidDataSourceStatManager;
 import com.alibaba.druid.stat.JdbcStatManager;
 import com.alibaba.druid.test.util.OracleMockDriver;
 import com.alibaba.druid.util.JdbcUtils;
@@ -32,8 +33,10 @@ public class OracleExceptionSorterTest_closeStmt extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
+        Assert.assertEquals(0, DruidDataSourceStatManager.getInstance().getDataSourceList().size());
     }
 
     public void test_connect() throws Exception {
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_commit.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_commit.java
index 45bea53653..56447bd9e2 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_commit.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_commit.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_commit extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_rollback.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_rollback.java
index 5295f3b733..9f8229254a 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_rollback.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_rollback.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_rollback extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setCatalog.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setCatalog.java
index 86626e8aec..a4a49d39b4 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setCatalog.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setCatalog.java
@@ -34,7 +34,8 @@ public class OracleExceptionSorterTest_setCatalog extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setIsolationLevel.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setIsolationLevel.java
index 83d43d5824..ef221a19b7 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setIsolationLevel.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setIsolationLevel.java
@@ -33,7 +33,8 @@ public class OracleExceptionSorterTest_setIsolationLevel extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setReadOnly.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setReadOnly.java
index e251e0fef1..d2a41ca017 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setReadOnly.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setReadOnly.java
@@ -34,7 +34,8 @@ public class OracleExceptionSorterTest_setReadOnly extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }
 
diff --git a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setSavepoint.java b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setSavepoint.java
index 89fb1ff83e..fd6f4e424d 100644
--- a/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setSavepoint.java
+++ b/src/test/java/com/alibaba/druid/bvt/pool/exception/OracleExceptionSorterTest_setSavepoint.java
@@ -34,7 +34,8 @@ public class OracleExceptionSorterTest_setSavepoint extends TestCase {
         dataSource.setMaxOpenPreparedStatements(100);
     }
 
-    protected void tearDowN() throws Exception {
+    @Override
+    protected void tearDown() throws Exception {
         JdbcUtils.close(dataSource);
     }