diff --git a/iconservice/icon_service_engine.py b/iconservice/icon_service_engine.py
index e2e963088..d26e9f156 100644
--- a/iconservice/icon_service_engine.py
+++ b/iconservice/icon_service_engine.py
@@ -2063,6 +2063,11 @@ def _recover_rc_db(cls, reader: 'WriteAheadLogReader', rc_data_path: str):
                 rc_version, revision = get_version_and_revision(prev_calc_db)
                 rc_version: int = max(rc_version, 0)
                 prev_calc_db.close()
+
+                # Process compaction before send the RC DB to reward calculator
+                prev_calc_db_path: str = os.path.join(rc_data_path, RewardCalcStorage.CURRENT_IISS_DB_NAME)
+                RewardCalcStorage.process_db_compaction(prev_calc_db_path)
+
                 calculate_block_height: int = reader.block.height - 1
                 standby_rc_db_path: str = RewardCalcStorage.rename_current_db_to_standby_db(rc_data_path,
                                                                                             calculate_block_height,
diff --git a/iconservice/iiss/reward_calc/storage.py b/iconservice/iiss/reward_calc/storage.py
index ec67ae7c5..af2bdd004 100644
--- a/iconservice/iiss/reward_calc/storage.py
+++ b/iconservice/iiss/reward_calc/storage.py
@@ -217,12 +217,25 @@ def replace_db(self, block_height: int) -> 'RewardCalcDBInfo':
         rc_version, _ = self.get_version_and_revision()
         rc_version: int = max(rc_version, 0)
         self._db.close()
+        # Process compaction before send the RC DB to reward calculator
+        self.process_db_compaction(os.path.join(self._path, self.CURRENT_IISS_DB_NAME))
 
         standby_db_path: str = self.rename_current_db_to_standby_db(self._path, block_height, rc_version)
         self._db = self.create_current_db(self._path)
 
         return RewardCalcDBInfo(standby_db_path, block_height)
 
+    @classmethod
+    def process_db_compaction(cls, path: str):
+        """
+        There is compatibility issue between C++ levelDB and go levelDB.
+        To solve it, should make DB being compacted before reading (from RC).
+        :param path: DB path to compact
+        :return:
+        """
+        db = KeyValueDatabase.from_path(path)
+        db.close()
+
     @classmethod
     def create_current_db(cls, rc_data_path: str) -> 'KeyValueDatabase':
         current_db_path = os.path.join(rc_data_path, cls.CURRENT_IISS_DB_NAME)