diff --git a/database/config.go b/database/config.go
index 536109597b..50522c5491 100644
--- a/database/config.go
+++ b/database/config.go
@@ -15,7 +15,7 @@ const (
 
 var defaultConfig = &DbConfig{
 	MaxIdleConnections: 10,
-	MaxOpenConnections: 1000,
+	MaxOpenConnections: 100,
 	ConnMaxLifeTime:    config.Duration{Duration: time.Hour},
 	Postgres: PostgresConfig{
 		Port:         5432,
diff --git a/database/config_test.go b/database/config_test.go
index 74ee93b717..23fcd2b544 100644
--- a/database/config_test.go
+++ b/database/config_test.go
@@ -22,7 +22,7 @@ func TestParseDatabaseConfig(t *testing.T) {
 	assert.NoError(t, accessor.UpdateConfig(context.Background()))
 
 	assert.Equal(t, false, GetConfig().EnableForeignKeyConstraintWhenMigrating)
-	assert.Equal(t, 1000, GetConfig().MaxOpenConnections)
+	assert.Equal(t, 100, GetConfig().MaxOpenConnections)
 	assert.Equal(t, 10, GetConfig().MaxIdleConnections)
 	assert.Equal(t, config.Duration{Duration: 3600000000000}, GetConfig().ConnMaxLifeTime)