diff --git a/src/observer/mysql/obmp_default.h b/src/observer/mysql/obmp_default.h
index ecfafb7b879bcf0a4855516606f8d8c0f776471e..88d5cb27cd6fc38f993bf40654f9c6b5479b97fa 100644
--- a/src/observer/mysql/obmp_default.h
+++ b/src/observer/mysql/obmp_default.h
@@ -14,6 +14,7 @@
 #define _OBMP_DEFAULT_H
 
 #include "observer/mysql/obmp_base.h"
+
 namespace oceanbase {
 namespace observer {
 // this processor always returns NOT_SUPPORTED error to client
@@ -37,7 +38,9 @@ public:
       } else {
         SERVER_LOG(WARN, "MySQL command not supported", "cmd", pkt.get_cmd());
       }
-      disconnect();
+      if (obmysql::OB_MYSQL_COM_STMT_SEND_LONG_DATA == pkt.get_cmd()) {
+        disconnect();
+      }
     }
     return ret;
   }