diff --git a/driver/src/conn.rs b/driver/src/conn.rs
index 641e9e75e..41df3e338 100644
--- a/driver/src/conn.rs
+++ b/driver/src/conn.rs
@@ -191,17 +191,17 @@ pub trait Connection: DynClone + Send + Sync {
     }
 
     async fn begin(&self) -> Result<()> {
-        let _ = self.exec("BEGIN").await;
+        self.exec("BEGIN").await?;
         Ok(())
     }
 
     async fn commit(&self) -> Result<()> {
-        let _ = self.exec("COMMIT").await;
+        self.exec("COMMIT").await?;
         Ok(())
     }
 
     async fn rollback(&self) -> Result<()> {
-        let _ = self.exec("ROLLBACK").await;
+        self.exec("ROLLBACK").await?;
         Ok(())
     }
 
diff --git a/driver/tests/driver/common/mod.rs b/driver/tests/driver/common/mod.rs
index 3e236be46..e7e066b06 100644
--- a/driver/tests/driver/common/mod.rs
+++ b/driver/tests/driver/common/mod.rs
@@ -12,4 +12,5 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-pub static DEFAULT_DSN: &str = "databend://root:@localhost:8000/default?sslmode=disable";
+pub static DEFAULT_DSN: &str =
+    "databend://databend:databend@localhost:8000/default?sslmode=disable";