---
title: "GET /#Action=PromoteReadReplica"
method: GET
path: "/#Action=PromoteReadReplica"
---

# GET /#Action=PromoteReadReplica

`GET /#Action=PromoteReadReplica`

Promotes a read replica DB instance to a standalone DB instance.

*   Backup duration is a function of the amount of changes to the database since the previous backup. If you plan to promote a read replica to a standalone instance, we recommend that you enable backups and complete at least one backup prior to promotion. In addition, a read replica cannot be promoted to a standalone instance when it is in the `backing-up` status. If you have enabled backups on your read replica, configure the automated backup window so that daily backups do not interfere with read replica promotion.
    
*   This command doesn't apply to Aurora MySQL, Aurora PostgreSQL, or RDS Custom.

## Query parameters

- `DBInstanceIdentifier` string, required
- `BackupRetentionPeriod` integer
- `PreferredBackupWindow` string
- `Action` 'PromoteReadReplica', required
- `Version` '2014-10-31', required

## Response `200`

Success

## Other responses

- `480` — InvalidDBInstanceStateFault
- `481` — DBInstanceNotFoundFault

---

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