diff --git a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/SubscribeDemo.java b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/SubscribeDemo.java
index 6d036201b32d57b4f9ffac65bd53ba66ff9509f4..a5b8bc819476154e1aa5aece266a4c687e63145f 100644
--- a/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/SubscribeDemo.java
+++ b/tests/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/SubscribeDemo.java
@@ -62,6 +62,7 @@ public class SubscribeDemo {
             sub.close(false);
             connection.close();
         } catch (Exception e) {
+            System.out.println("host: " + host + ", database: " + database + ", topic: " + topic + ", sql: " + sql);
             e.printStackTrace();
         }
     }