RDS supports two access modes: standard mode and high-security mode. The high-security mode is also called database proxy mode, which may cause service instability. If your instance (excluding SQL Server 2008 R2) is in high-security mode, you need to switch to the standard mode. For more information, see [Important] RDS network link upgrade.

Differences between standard mode and high-security mode

  • Standard mode (recommended): RDS uses Sever Load Balancer to eliminate the impact of database failovers on the application layer. This shortens response time and increases performance.
  • High-security mode (database proxy mode): This mode prevents 90% of disconnections, but increases response time by 20% or more. If your instance (excluding SQL Server 2008 R2) is in this mode, you need to switch to the standard mode.

How to switch the access mode

Note
  • You can only disable the database proxy mode (that is, switch from the high-security mode to the standard mode), and cannot enable the database proxy mode (that is, switch from the standard mode to the high-security mode).
  • During the access mode switching, the RDS instance may be disconnected once for about 30 seconds. It is recommended that you perform the switching during off-peak hours and make sure that your application can automatically reconnect to the RDS instance.

Method 1

  1. Log on to the RDS console.
  2. In the upper-left corner, select the region.
  3. Locate the target instance and click the instance ID.
  4. In the left-side navigation pane, click Connection Options.
  5. Click Switch Access Mode.
    Note This button is available only if you have turned on the database proxy mode.

Method 2

  1. Log on to the RDS console.
  2. In the upper-left corner, select the region.
  3. Locate the target instance and click the instance ID.
  4. In the left-side navigation pane, click Database Proxy.
  5. In the Database Proxy tab page, click the slider to turn on or off the database proxy mode.
    Note This tab page is available only if you have turned on the database proxy mode.