diff --git a/server/internal/dao/engine.go b/server/internal/dao/engine.go
index ef77ae7..6c1660d 100644
--- a/server/internal/dao/engine.go
+++ b/server/internal/dao/engine.go
@@ -1,7 +1,6 @@
 package dao
 
 import (
-	"errors"
 	"kenaito-conf/server/internal/config"
 	"kenaito-conf/server/internal/model"
 	"kenaito-conf/server/internal/util"
@@ -99,25 +98,3 @@ func initSeedData() error {
 
 	return nil
 }
-
-// Now 返回数据库当前时间（毫秒精度），用于增量同步游标和 updated_at 写入。
-// 统一使用数据库时间可以避免多实例应用服务器之间的时钟偏差。
-func Now() (time.Time, error) {
-	rows, err := Engine.DB().Query("SELECT NOW(3)")
-	if err != nil {
-		return time.Time{}, err
-	}
-	defer rows.Close()
-
-	var now time.Time
-	if !rows.Next() {
-		if err := rows.Err(); err != nil {
-			return time.Time{}, err
-		}
-		return time.Time{}, errors.New("no database time result")
-	}
-	if err := rows.Scan(&now); err != nil {
-		return time.Time{}, err
-	}
-	return now, nil
-}
diff --git a/server/internal/handler/app.go b/server/internal/handler/app.go
index c05e55e..5f06113 100644
--- a/server/internal/handler/app.go
+++ b/server/internal/handler/app.go
@@ -4,7 +4,6 @@ import (
 	"crypto/rand"
 	"encoding/hex"
 	"kenaito-conf/server/internal/dao"
-	"kenaito-conf/server/internal/logger"
 	"kenaito-conf/server/internal/middleware"
 	"kenaito-conf/server/internal/model"
 	"net/http"
@@ -259,12 +258,7 @@ func (h *AppHandler) Delete(c *gin.Context) {
 		return
 	}
 
-	now, err := dao.Now()
-	if err != nil {
-		logger.SugaredLogger.Errorf("[AppHandler.Delete] get database time error: %v", err)
-		c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "删除失败"})
-		return
-	}
+	now := time.Now()
 
 	app.Enabled = false
 	app.UpdatedBy = userInfo.Name
diff --git a/server/internal/handler/config.go b/server/internal/handler/config.go
index 85373c4..8a97bf9 100644
--- a/server/internal/handler/config.go
+++ b/server/internal/handler/config.go
@@ -202,12 +202,7 @@ func (h *ConfigHandler) Add(c *gin.Context) {
 		}
 	}
 
-	now, err := dao.Now()
-	if err != nil {
-		logger.SugaredLogger.Errorf("[ConfigHandler.Add] get database time error: %v", err)
-		c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "保存失败"})
-		return
-	}
+	now := time.Now()
 
 	config := model.AppConfig{
 		GroupId:   req.GroupId,
@@ -278,12 +273,7 @@ func (h *ConfigHandler) Update(c *gin.Context) {
 		return
 	}
 
-	now, err := dao.Now()
-	if err != nil {
-		logger.SugaredLogger.Errorf("[ConfigHandler.Update] get database time error: %v", err)
-		c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "保存失败"})
-		return
-	}
+	now := time.Now()
 
 	// save history
 	h.saveHistory(&config, userInfo.Name, "update", now)
@@ -317,12 +307,7 @@ func (h *ConfigHandler) Delete(c *gin.Context) {
 		return
 	}
 
-	now, err := dao.Now()
-	if err != nil {
-		logger.SugaredLogger.Errorf("[ConfigHandler.Delete] get database time error: %v", err)
-		c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "删除失败"})
-		return
-	}
+	now := time.Now()
 
 	// 记录删除前的配置内容
 	h.saveHistory(&config, userInfo.Name, "delete", now)
@@ -433,12 +418,7 @@ func (h *ConfigHandler) Rollback(c *gin.Context) {
 			return
 		}
 
-		now, err := dao.Now()
-		if err != nil {
-			logger.SugaredLogger.Errorf("[ConfigHandler.Rollback] get database time error: %v", err)
-			c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "回滚失败"})
-			return
-		}
+		now := time.Now()
 
 		// 记录回滚前的配置内容
 		h.saveHistory(&config, userInfo.Name, "rollback", now)
diff --git a/server/internal/handler/config_api.go b/server/internal/handler/config_api.go
index 63d7b68..3762e31 100644
--- a/server/internal/handler/config_api.go
+++ b/server/internal/handler/config_api.go
@@ -96,13 +96,8 @@ func (h *ConfigApiHandler) FetchAllConfigs(c *gin.Context) {
 		return
 	}
 
-	// 游标上界取查询前的数据库时间，保证查询期间发生的更新会在下次增量中返回
-	upperBound, err := dao.Now()
-	if err != nil {
-		logger.SugaredLogger.Errorf("[FetchAllConfigs] get database time error: %v", err)
-		c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "服务暂时不可用"})
-		return
-	}
+	// 游标上界取查询前的当前时间，保证查询期间发生的更新会在下次增量中返回
+	upperBound := time.Now()
 
 	result := make(map[string]interface{})
 	var configIds []int
@@ -195,14 +190,8 @@ func (h *ConfigApiHandler) FetchChangedConfigs(c *gin.Context) {
 
 	lastUpdateTime := time.UnixMilli(req.LastTime)
 
-	// 以数据库时间为本次查询的固定上界，避免查询与游标生成之间的竞态，
-	// 同时避免多实例应用服务器的时钟偏差。
-	upperBound, err := dao.Now()
-	if err != nil {
-		logger.SugaredLogger.Errorf("[FetchChangedConfigs] get database time error: %v", err)
-		c.JSON(http.StatusInternalServerError, model.WrapperResponse{Code: 500, Msg: "服务暂时不可用"})
-		return
-	}
+	// 以当前时间为本次查询的固定上界，避免查询与游标生成之间的竞态
+	upperBound := time.Now()
 
 	result := make(map[string]string)
 	var configIds []int