diff --git a/db/DbManager.py b/db/DbManager.py
index 711eb19..7cf4310 100644
--- a/db/DbManager.py
+++ b/db/DbManager.py
@@ -5,6 +5,7 @@ import firebase_admin
 from firebase_admin import credentials, firestore
 
 import definitions
+import params
 from pojo import ResultEnum
 from pojo.MailPojo import MailPojo
 from pojo.ReserveResultPojo import ReserveResultPojo
@@ -27,25 +28,30 @@ class DataManager:
         self._db = firestore.client()
 
     def get_all_sim_infos(self):
+        params.oracle_log_sender.send_read_db_event("get_all_sim_infos")
         sim_info_collection = self._db.collection(SIM_INFOS)
         return sim_info_collection
 
     def get_all_successful_items(self):
+        params.oracle_log_sender.send_read_db_event("get_all_successful_items")
         return self.get_all_successful_items_for_day(str(datetime.date.today()), None)
 
     def get_all_successful_items_for_day(self, day, source_from: Union[str, None]):
+        params.oracle_log_sender.send_read_db_event("get_all_successful_items_for_day for {}".format(day))
         doc_ref = self._db.collection(day)
         if source_from is not None:
             doc_ref.where(u'source_from', u'==', source_from)
         return doc_ref
 
     def get_successful_item_for_day_by_status(self, day, status: ResultEnum):
+        params.oracle_log_sender.send_read_db_event("get_successful_item_for_day_by_status for {}".format(day))
         doc_ref = self._db.collection(day)
         if status is not None:
             doc_ref.where(u'accepted', u'==', status.value)
         return doc_ref
 
     def save_sim_info(self, sim_info: SimInfoPojo):
+        params.oracle_log_sender.send_read_db_event("save_sim_info")
         doc_ref = self._db.collection(SIM_INFOS).document(sim_info.phone)
         doc_ref.set(sim_info.to_firestore_dict())
 
@@ -57,6 +63,7 @@ class DataManager:
         doc_ref.set(result.to_firestore_dict())
 
     def find_appointment_detail_via_phone(self, day, phone) -> ReserveResultPojo:
+        params.oracle_log_sender.send_read_db_event("find_appointment_detail_via_phone")
         doc_ref = self._db.collection(day)
         results = doc_ref.where(u'phone', u'==', phone).stream()
         result_list = []
@@ -70,6 +77,7 @@ class DataManager:
         doc_ref.set(contact.to_firestore_dict())
 
     def _delete_collection(self, coll_ref, batch_size):
+        params.oracle_log_sender.send_read_db_event("_delete_collection")
         docs = coll_ref.limit(batch_size).stream()
         deleted = 0
 
@@ -83,14 +91,17 @@ class DataManager:
 
     # 删除数据库中所有的sim卡信息
     def clear_all_sim_info(self):
+        params.oracle_log_sender.send_read_db_event("clear_all_sim_info")
         coll_ref = self._db.collection(SIM_INFOS)
         self._delete_collection(coll_ref, self.batch_size)
 
     def read_contacts_from_db(self) -> list:
+        params.oracle_log_sender.send_read_db_event("read_contacts_from_db")
         contact_collection = self._db.collection(CONTACT_COLLECTION_NAME)
         return contact_collection
 
     def get_mail_list(self) -> list:
+        params.oracle_log_sender.send_read_db_event("get_mail_list")
         mail_collection = self._db.collection(MAIL_COLLECTION_NAME)
         mail_list = []
         for mail in mail_collection.stream():
diff --git a/logs/LogSender.py b/logs/LogSender.py
index 6e4f614..b76eef2 100644
--- a/logs/LogSender.py
+++ b/logs/LogSender.py
@@ -18,6 +18,7 @@ LOG_SUBJECT_SMS = "SMS"
 SUBJECT_SIM_INFO = "sim_card"
 # Log type
 TYPE_EVENT_CHECK_RESULTS = "EVENT_CHECK_RESULTS"
+TYPE_EVENT_READ_DB = "EVENT_READ_DB"
 TYPE_EVENT_RESET_ALL_SIM_CARDS = "EVENT_RESET_ALL_SIM_CARDS"
 TYPE_EVENT_CHANGE_SLOT = "EVENT_CHANGE_SLOT"
 TYPE_SMS_RECEIVED = "TYPE_SMS_RECEIVED"
@@ -94,6 +95,9 @@ class LogSender:
     def send_error(self, msg: str):
         self.send_log(msg=msg, type=LOG_ERROR)
 
+    def send_read_db_event(self, msg: str):
+        self.send_log(msg=msg, type=TYPE_EVENT_READ_DB, subject=LOG_SUBJECT_EVENT)
+
     def send_log(self, msg: str, source=definitions.LOG_SOURCE, subject="appointment", type: str = "INFO"):
         log_id = "ocid1.log.oc1.eu-frankfurt-1.amaaaaaas4ft22ya3ub6glkltqqbnmkxo3ui7xwq3dxtjd2scdhme4deyu2q"
         response = self._loggingingestion_client.put_logs(