---
title: Explore upgrade history log
description: Reduce processing time by extracting all upgrade related logs into a separate file named database-upgrade\_<timestamp>.log. You can also zip the file and attach it to upgrade history.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/platform-administration/upgrade-center/uc-explore-history-log.html
release: australia
product: Upgrade Center
classification: upgrade-center
topic_type: task
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [Reviewing upgrade history, Using Upgrade Center, Upgrade Center, Upgrade, Administer the ServiceNow AI Platform]
---

# Explore upgrade history log

Reduce processing time by extracting all upgrade related logs into a separate file named database-upgrade\_<timestamp>.log. You can also zip the file and attach it to upgrade history.

## Before you begin

Role required: admin.

## About this task

When the upgrade starts, the upgrade log messages are written to both the localhost\_log file and the database-upgrade\_<timestamp>.log file. When the upgrade is done, the database-upgrade\_<timestamp>.log file is uploaded to the upgrade history table.

## Procedure

1.  Navigate to **All** > **System Logs** > **Utilities**.

    **Note:** You can implement this step to view the extracted database-upgrade\_<timestamp>.log file only after the upgrade is done.

2.  Click **Node Log File Download**.

    The database-upgrade\_<timestamp>.log file appears in the list of log files.

    **Note:** The localhost\_log file consists of all the logs. The database-upgrade\_<timestamp>.log file consists of logs only related to the upgrade.

    The database-upgrade\_<timestamp>.log file appears only if the `glide.db.upgrade.log.save_to_db.enabled` property is set to True. By default, the `glide.db.upgrade.log.save_to_db.enabled` is set to True.

3.  Go to **Upgrade Center** > **Upgrade History**.

    A list of upgrades shows up.

4.  Click the required upgrade from the list.

    You can see database-upgrade\_<timestamp>.log file is automatically attached to the upgrade.

    **Note:** The database-upgrade\_<timestamp>.log file gets attached only if the `glide.db.upgrade.log.save_to_db.enabled` property is set to True. By default, the `glide.db.upgrade.log.save_to_db.enabled` is set to True.

5.  Download the zipped database-upgrade\_<timestamp>.log file.

    **Note:** The database-upgrade\_<timestamp>.log file has been zipped to reduce the download time.