diff --git a/handler/dbm.go b/handler/dbm.go
index 0dd97d4..0e948ec 100644
--- a/handler/dbm.go
+++ b/handler/dbm.go
@@ -168,6 +168,7 @@ func RunSQLHandler(c *gin.Context) {
 		resp.Code = proto.ParameterError
 		resp.Message = "请求参数解析错误"
 	} else {
+		log.Println("run sql request, sql is:", req.SQL)
 		req.UserID = userID
 		res, err2 := service.RunSQL(&req)
 		if err2 != nil {
@@ -179,7 +180,6 @@ func RunSQLHandler(c *gin.Context) {
 			resp.Data = res
 		}
 	}
-	log.Println("run sql resp, sql is:", req.SQL)
 	c.JSON(http.StatusOK, resp)
 	return
 }
diff --git a/service/dbmService.go b/service/dbmService.go
index cddedb0..5cae92d 100644
--- a/service/dbmService.go
+++ b/service/dbmService.go
@@ -39,7 +39,6 @@ func RunSQL(req *proto.RunSQLRequest) (*proto.SQLResult, error) {
 
 func GetGORMDBObject(dbmInfo *proto.DBManage) (db_ *gorm.DB, err error) {
 	dao.DBMMapRWMutex.RLock()
-	defer dao.DBMMapRWMutex.RUnlock()
 	if dao.DBMMap != nil {
 		dbValue := dao.DBMMap[dbmInfo.ID]
 		if dbValue != nil {
@@ -47,6 +46,7 @@ func GetGORMDBObject(dbmInfo *proto.DBManage) (db_ *gorm.DB, err error) {
 			return dbValue.Value, nil
 		}
 	}
+	dao.DBMMapRWMutex.RUnlock()
 
 	switch dbmInfo.DB_Type {
 	case proto.DB_TYPE_MYSQL: // MySQL
@@ -57,6 +57,7 @@ func GetGORMDBObject(dbmInfo *proto.DBManage) (db_ *gorm.DB, err error) {
 		}
 	case proto.DB_TYPE_POSTGRES: // PostgreSQL
 		dsn := "host=" + dbmInfo.DB_IP + " user=" + dbmInfo.DB_User + " password=" + dbmInfo.DB_Password + " dbname=" + dbmInfo.DB_NAME + " port=" + strconv.Itoa(int(dbmInfo.DB_Port)) + " sslmode=disable TimeZone=Asia/Shanghai"
+
 		db_, err = gorm.Open(postgres.Open(dsn), &gorm.Config{})
 		if err != nil {
 			return nil, err
@@ -66,11 +67,11 @@ func GetGORMDBObject(dbmInfo *proto.DBManage) (db_ *gorm.DB, err error) {
 	}
 
 	dao.DBMMapRWMutex.Lock()
-	defer dao.DBMMapRWMutex.Unlock()
 	var dbValue *proto.DBValue
 	dbValue.Value = db_
 	dbValue.LastUserTime = worker.GetCurrentTimestamp()
 	dao.DBMMap[dbmInfo.ID] = dbValue
+	dao.DBMMapRWMutex.Unlock()
 	return db_, err
 }