If the read/write splitting function is no longer needed, you can disable it. The read/write splitting function can only be used when at least one read-only instance is available, so you must disable the read/write splitting function before you delete the last available read-only instance. Otherwise, the instance cannot be deleted.

This document explains how to disable the read/write splitting function.

After the read/write splitting function is disabled, your applications cannot connect to the read/write splitting address any longer. Make sure that your database connection configuration does not include this connection address.


The instance is in MySQL 5.6 High-Availability Edition or Finance Edition, or MySQL 5.7 High-Availability Edition with read/write splitting enabled.


  1. Log on to the RDS console .
  2. Select the region where the target instance is located.
  3. Click the target instance ID to enter the Basic Information page.
  4. Click Connection Options in the left-side navigation pane to enter the Connection Options page.
  5. Click the Read/Write Splitting tab.

  6. Click Disable Read/Write Splitting.
  7. In the dialog box, click Confirm.