diff --git a/server/common/dbpool.js b/server/common/dbpool.js
index 150b0b9..eb24410 100644
--- a/server/common/dbpool.js
+++ b/server/common/dbpool.js
@@ -1,3 +1,11 @@
+const constant = require('./constant');
+
+const dbHash = {
+  constant.GAMEDB_NAME: null,
+  constant.BCEVENTDB_NAME: null,
+  constant.BCNFTDB_NAME: null
+};
+
 async function getBcEventConn() {
 
 }