diff --git a/server/web3dbspider/services/events/UserMinterFactory/activate721nft.js b/server/web3dbspider/services/events/UserMinterFactory/activate721nft.js
index 7dface4..0a4f760 100644
--- a/server/web3dbspider/services/events/UserMinterFactory/activate721nft.js
+++ b/server/web3dbspider/services/events/UserMinterFactory/activate721nft.js
@@ -71,7 +71,7 @@ class Activate721Nft extends BaseEventProcess {
       ['createtime', nowTime],
       ['modifytime', nowTime],
     ];
-    const {err} = await this.bcNftConn(
+    const {err} = await this.bcNftDbConn(
       'upsert',
       't_nft',
       [
diff --git a/server/web3dbspider/services/events/common/BaseEventProcess.js b/server/web3dbspider/services/events/common/BaseEventProcess.js
index 281f47d..a112dc4 100644
--- a/server/web3dbspider/services/events/common/BaseEventProcess.js
+++ b/server/web3dbspider/services/events/common/BaseEventProcess.js
@@ -83,7 +83,7 @@ class BaseEventProcess {
   async updateEventDb(fields) {
     const logHead = this.genLogHead('updateEventDb');
     while (true) {
-      const {err} = await this.bcEventConn(
+      const {err} = await this.bcEventDbConn(
         'update',
         this.eventProc.getTableName(),
         [
@@ -121,7 +121,7 @@ class BaseEventProcess {
   async add721NftRefresh(netId, contractAddress, contractName, tokenId) {
     while (true) {
       const nowTime = utils.getUtcTime();
-      const {err} = await this.bcEventConn(
+      const {err} = await this.bcEventDbConn(
         'upsert',
         't_erc721_refresh',
         [