fixed compile error & add clobStat

src/main/java/com/alibaba/druid/mock/handler/MySqlMockExecuteHandlerImpl.java

@@ -6,8 +6,6 @@ import java.sql.Timestamp;
 import java.sql.Types;
 import java.util.List;
 
-import org.apache.derby.iapi.types.SQLVarchar;
-
 import com.alibaba.druid.mock.MockPreparedStatement;
 import com.alibaba.druid.mock.MockResultSet;
 import com.alibaba.druid.mock.MockResultSetMetaData;

src/main/java/com/alibaba/druid/pool/DruidDataSource.java

@@ -1776,6 +1776,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
 
         dataMap.put("ConnectionHoldTimeHistogram", this.getDataSourceStat().getConnectionHoldHistogram().toArray());
         dataMap.put("RemoveAbandoned", this.isRemoveAbandoned());
+        dataMap.put("ClobOpenCount", this.getDataSourceStat().getClobOpenCount());
 
         return dataMap;
     }