---
title: "Maintenance (Admin Tools)"
manual: "Getting Started"
version: "13.4"
permalink: "https://docs.typo3.org/permalink/t3start:admin-tools-maintenance@13.4"
source: "Concepts/Backend/AdminTools/Maintenance.rst"
modified: "2026-09-15T08:44:38+00:00"
---

# Maintenance (Admin Tools)

Only available if [`typo3/cms-install`](https://packagist.org/packages/typo3/cms-install) is installed.

The backend module **Admin Tools > Maintenance** offers tools
to system maintainers that are necessary during development or updates.

Some of the tools available here include:

-   [Flush TYPO3 and PHP Cache](https://docs.typo3.org/permalink/t3start:flush-typo3-and-php-cache@13.4)
-   [Analyze Database Structure](https://docs.typo3.org/permalink/t3start:analyze-database-structure@13.4)
-   [Create Administrative User](https://docs.typo3.org/permalink/t3start:create-administrative-user@13.4)

## Flush TYPO3 and PHP Cache

By clicking the button **Flush cache** you can flush all caches. This is
necessary during development if you changed files like
[Fluid templates](https://docs.typo3.org/permalink/t3start:fluid-templates@13.4), [TypoScript files](https://docs.typo3.org/permalink/t3start:typoscript@13.4),
or PHP files.

It is also necessary to flush caches after installing or updating extensions.

You can achieve the same effect by calling

```bash
ddev typo3 cache: flush
```

> [!NOTE]
> Flushing the cache via the "Clear cache" buttons in the
> [Top Bar](https://docs.typo3.org/permalink/t3start:top-bar@13.4) does not have the same effect. It does not flush
> PHP related caches.

## Analyze Database Structure

Aside its name this tool does not only analyze the database structure but also
offers to fix it for you.

Database changes can be necessary when [TCA files](https://docs.typo3.org/permalink/t3start:tca@13.4) where changed or
extensions installed / updated.

## Create Administrative User

This tool can be used to create a new administrative backend user with or
without maintainer privileges.

You can also create a new backend user from the console:

```bash
ddev typo3 backend:user:create
```

and from the module **System > Backend Users**. The latter cannot
grant system maintainer rights but is available to all admins.