## Overview

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> [!NOTE]
> This lab only supports Chrome browser.

In this practice, participants will learn how to use `ADMIN PAUSE DDL` to pause ongoing DDL executions and how to use `ADMIN RESUME DDL` to resume paused DDL executions. This feature helps reduce the impact of long-running DDL executions, such as adding indexes or modifying column attributes, on database performance. Additionally, it prevents interference between DDL executions and other maintenance tasks within the database.

### Tasks

+ Initialize the data and the TiDB Cluster.
+ Learn how to use `ADMIN PAUSE DDL` and `ADMIN RESUME DDL`.
+ Learn how to control the impact of DDL executions on database performance.

> [!TIP]
> Click **Start** to launch the lab environment.
> Once the environment is ready, select **Next** on the bottom toolbar to advance to **Module 1**.
> And, follow the step-by-step lab guide to connect to the hands-on environment and begin your tasks.