# Maintenance Window

The **Maintenance Window** tab allows you to schedule maintenance activities like updates, patches, and OS patching at a specified date and time without disrupting your productive hours. You can schedule a maintenance window on non-productive hours (For example, weekly on Sunday). You can schedule a maintenance window with specific days and times to allow for planned database downtime.

To edit the schedule, click the **edit** button next to it. This takes you to the **Settings** tab, where you can schedule your start day, start time, and duration

Below this, you see the upcoming maintenance schedule and any scheduled activities. 

1. Click the maintenance schedule to see the following:

   Search bar to search for specific maintenance activity, filters by statuses or scheduled by.

   * Maintenance activity - Maintenance activities can be system actions such as patching or OS updates. They can also be user initiated actions such as parameter profile update, compute resize, storage/IOPS resize, switch over/switch back.
   * Task status - Displays the statuses of the maintenance tasks, possible values are SUCCESS, IN\_PROGRESS, QUEUED, FAILED, ABORTED.
   * Impact - Displays if there is a service downtime due to the maintenance activity. It also displays the estimated downtime duration.
   * Scheduled By - Displays whether the maintenance activity was initiated by Tessell or by the user.
2. Click the ellipsis (⋮) icon on the maintenance schedule to see additional options:
   * Reschedule -  Upon clicking, a confirmation dialog box opens. Specify the new date and time, then click **Confirm**.
   * Start Now - Upon clicking, a confirmation dialog box appears asking for confirmation to start the maintenance. Click **Start** to begin immediately.
   * Cancel - Click to cancel the existing maintenance schedule.

#### Past Maintenance Window

The past maintenance window section displays maintenance activities that have already occurred.

Use the **Search bar** to find a specific past maintenance activity. You can also filter the **Task status** using the dropdown list.

Following information is displayed in columns:

* **Maintenance date**: Displays the dates on which maintenance was performed.
* **Task status**: Displays the statuses of the maintenance tasks, whether they were skipped or successful. It also displays the number of successful tasks.
  * A maintenance window run is skipped if there are no tasks scheduled for it.
  * If an action on the DB service runs for the duration of the maintenance window, the maintenance window run is skipped.
* **Runtime**: Displays the duration of a successful maintenance activity. Skipped or canceled maintenance activities are reflected by their respective statuses.
* **Scheduled By**: Displays whether the maintenance activity was initiated by Tessell or by the user.