Kernel Minor Version Upgrade
Last updated: 2025-05-21 15:53:27
TencentDB for PostgreSQL allows you to upgrade kernel minor version, so you can use new features, improve performance, or fix issues.
For detailed information on the supported kernel versions of TencentDB for PostgreSQL, please refer to Kernel Version Update History.
Overview
You can manually upgrade kernel minor version in the console.
Upgrade Rules
If an instance to be upgraded is associated with other instances (e.g., read-only instances), these instances will be upgraded together to ensure data consistency.
Version upgrade of TencentDB for PostgreSQL may involve data migration. Usually, the migration speed is related to the amount of data. Please wait patiently. During the upgrade period, your business will not be affected and can be accessed normally.
Note
Upon completion of the minor version upgrade, an active/standby switch will be involved, and the database will experience a momentary disconnection lasting a few seconds. It is recommended to perform the switch during the instance maintenance time, and the application has the automatic reconnection feature.
The kernel minor version cannot be downgraded once upgraded.
Directions
1. Log in to the TencentDB for PostgreSQL console. In the instance list, click an Instance ID or Manage in the Operation column to enter the instance details page.
2. In the Configuration Info section, click Upgrade Kernel Minor Version.
3. In the pop-up window, set the target version to upgrade and click OK.
Note:
As database kernel minor version upgrade may involve data migration, a momentary disconnection from the database may occur after the upgrade is completed. We recommend that you set the switch time to During maintenance time, so that the switch will be initiated within the next maintenance time after the upgrade is completed.
When upgrading the minor kernel version of an instance, the backend checks the Instance Parameter List. If there are data discrepancies between the parameter ranges of the target kernel version and the original kernel version, and the parameter value exceeds the range specified by the target kernel version, a notification will be provided as shown below:
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