diff --git a/backend/core/runner/db.go b/backend/core/runner/db.go
index a734ebb2966..f31fbb2642c 100644
--- a/backend/core/runner/db.go
+++ b/backend/core/runner/db.go
@@ -60,9 +60,6 @@ func NewGormDbEx(configReader config.ConfigReader, logger log.Logger, sessionCon
 	}
 
 	idleConns := configReader.GetInt("DB_IDLE_CONNS")
-	if idleConns <= 0 {
-		idleConns = 10
-	}
 	dbMaxOpenConns := configReader.GetInt("DB_MAX_CONNS")
 	if dbMaxOpenConns <= 0 {
 		dbMaxOpenConns = 100