diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index f3ce4c441..a7ae231e4 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -719,7 +719,7 @@ var (
 	DbSizeLimitFlag = cli.StringFlag{
 		Name:  "db.size.limit",
 		Usage: "runtime limit of chandata db size. you can change value of this flag at any time",
-		Value: (7 * datasize.TB).String(),
+		Value: (3 * datasize.TB).String(),
 	}
 
 	HealthCheckFlag = cli.BoolFlag{