<p>Allows the update of one or more parameters of a database in Amazon Lightsail.</p> <p>Parameter updates don't cause outages; therefore, their application is not subject to the preferred maintenance window. However, there are two ways in which parameter updates are applied: <code>dynamic</code> or <code>pending-reboot</code>. Parameters marked with a <code>dynamic</code> apply type are applied immediately. Parameters marked with a <code>pending-reboot</code> apply type are applied only after the database is rebooted using the <code>reboot relational database</code> operation.</p> <p>The <code>update relational database parameters</code> operation supports tag-based access control via resource tags applied to the resource identified by relationalDatabaseName. For more information, see the <a href="https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-controlling-access-using-tags">Amazon Lightsail Developer Guide</a>.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}