This topic describes the release notes for ApsaraDB RDS and provides links to the relevant references.

Updates in minor engine versions

December 2021

Database engine Category Feature Description Release date References
PostgreSQL Performance improvement Creation of accounts and databases in RDS instances that use local SSDs Accounts and databases can be created for RDS instances that use local SSDs in the ApsaraDB RDS console. Multiple privileged accounts can be created for each of these instances. 2021-12-30 Create a database and an account on an ApsaraDB RDS for PostgreSQL instance
PostgreSQL New feature PostgreSQL 14 is supported ApsaraDB RDS for PostgreSQL is compatible with PoatgreSQL 14.1. 2021-12-24 PostgreSQL 14
MySQL, PostgreSQL, SQL Server, and MariaDB TX New feature Prohibition of creating RDS instances for which disk encryption is not enabled Users can attach a Resource Access Management (RAM) policy to a RAM user to prevent the RAM user from creating RDS instances for which disk encryption is not enabled. 2021-12-20 Use RAM policies to manage the permissions of RAM users on ApsaraDB RDS instances
PostgreSQL New feature Data migration from a self-managed PostgreSQL instance to an RDS instance Users can migrate the data of a self-managed PostgreSQL instance from an Elastic Compute Service (ECS) instance or a data center to an RDS instance in an easy-to-use, efficient manner and at a high speed with no downtime. 2021-12-15 Migrate the data of a self-managed PostgreSQL instance to an ApsaraDB RDS for PostgreSQL instance
MySQL New feature Migration of an RDS instance that uses standard SSDs or enhanced SSD (ESSDs) across zones in the same region Users can migrate an RDS instance that uses standard SSDs or ESSDs across zones in the same region. 2021-12-14 Migrate an ApsaraDB RDS for MySQL instance across zones in the same region

November 2021

Database engine Category Feature Description Release date References
SQL Server New feature Host accounts Users can create a host account for an RDS instance. Users can use the crested host account in the Bastionhost console to connect to and manage the hosts on which the RDS instance and its secondary RDS instance run. 2021-11-30 Create a host account for an ApsaraDB RDS for SQL Server instance and use the host account for logons
SQL Server New feature vSwitch changes Users can switch an RDS instance to a different vSwitch based on their business requirements. 2021-11-30 Switch an ApsaraDB RDS for SQL Server instance to a different vSwitch
MySQL, PostgreSQL, and SQL Server Performance improvement Cross-region backups The cross-region backup feature is improved to support cross-region backups in more Alibaba Cloud regions. 2021-11-26 Enable cross-region backups for an ApsaraDB RDS for MySQL instance

Enable cross-region backups for an ApsaraDB RDS for SQL Server instance

Enable cross-region backups for an ApsaraDB RDS for PostgreSQL instance

SQL Server New feature New shared instance types New shared instance types are provided for RDS instances that run SQL Server 2012 SE, SQL Server 2016 SE, SQL Server 2017 SE, SQL Server 2019 SE, SQL Server 2012 EE, or SQL Server 2016 EE. 2021-11-25 Primary ApsaraDB RDS for SQL Server instance types
PostgreSQL New feature Connect an RDS instance to a self-managed domain Users can connect an RDS instance to a self-managed Active Directory (AD) domain. This way, users can manage their enterprise in a centralized manner and ensure the security of their data. 2021-11-25 Connect an ApsaraDB RDS for PostgreSQL instance to a self-managed AD domain
MySQL, PostgreSQL, and SQL Server New feature Commercial release of the backup download feature The backup download feature is about to be upgraded and commercially released. In the commercial release, a free quota for backup downloads over the Internet is provided. If the traffic that users consume for downloading backup files over the Internet exceeds the free quota, users are charged additional fees. 2021-11-25 [Notice] Upgrade and commercial release of the backup download feature
PostgreSQL Performance improvement Subscription read-only RDS instances In addition to the pay-as-you-go billing method, read-only RDS instances support the subscription billing method. 2021-11-17 Overview of read-only ApsaraDB RDS for PostgreSQL instances

October 2021

Database engine Category Feature Description Release date References
MySQL New feature Upgrade from RDS Basic Edition to RDS High-availability Edition in MySQL 8.0 The RDS edition of an RDS instance that runs MySQL 8.0 can be upgraded from Basic Edition to High-availability Edition. 2021-10-28 Upgrade an ApsaraDB RDS for MySQL instance from Basic Edition to High-availability Edition
MySQL Performance improvement Upgrade from MySQL 5.6 to MySQL 5.7 The major engine version of an RDS instance can be upgraded from MySQL 5.6 to MySQL 5.7. This upgrade is supported in all Alibaba Cloud regions. 2021-10-28 Upgrade the major engine version of an ApsaraDB RDS for MySQL instance
PostgreSQL New feature Synchronization of IP address whitelists from a primary RDS instance to a specified read-only RDS instance A primary RDS instance can synchronize its IP address whitelists to a specified read-only RDS instance that is attached to the primary RDS instance. 2021-10-19 Configure an IP address whitelist for an ApsaraDB RDS for PostgreSQL instance
PostgreSQL Performance improvement Enhanced alerting After the alerting feature is enabled for an RDS instance, the built-in metrics that are provided by ApsaraDB RDS are displayed. Users can build an alerting system for the RDS instance with ease by using the built-in metrics and then use the alerting system to identify exceptions in crucial metrics at the earliest opportunity. 2021-10-14 Manage the alert rules of an ApsaraDB RDS for PostgreSQL instance

September 2021

Database engine Category Feature Description Release date References
MySQL, PostgreSQL, SQL Server, and MariaDB TX Performance improvement Pagination for the DescribeDBInstances operation Users can use the MaxResults parameter to specify the maximum number of entries per page and then use the NextToken parameter to specify the token that is used to display the next page. The NextToken parameter is set to its value that is returned from the most recent call of the DescribeDBInstances operation. 2021-10-15 Queries instances
PostgreSQL Performance improvement Cross-region backups for RDS instances that use standard SSDs or ESSDs The cross-region backup feature is enhanced to support cross-region backups for RDS instances that use standard SSDs or ESSDs.
Note Cross-region backups are not supported for RDS instances for which disk encryption is enabled.
2021-09-26 Enable cross-region backups for an ApsaraDB RDS for PostgreSQL instance
MySQL New feature Upgrade from MySQL 5.6 to MySQL 5.7 The major engine version of an RDS instance can be upgraded from MySQL 5.6 to MySQL 5.7 in the Singapore (Singapore) region. This upgrade is made available in a canary release. 2021-09-25 Upgrade the major engine version of an ApsaraDB RDS for MySQL instance
PostgreSQL New feature Enhanced monitoring The enhanced monitoring feature is supported. This feature provides more OS metrics and database metrics than the standard monitoring feature. 2021-09-01 View the Enhanced Monitoring metrics of an ApsaraDB RDS for PostgreSQL instance

August 2021

Database engine Category Feature Description Release date References
SQL Server Performance improvement Maximum storage capacity for primary instance types The maximum storage capacity that is supported for primary RDS instances is increased to 16,000 GB.

This adjustment is not supported for primary RDS instances that run SQL Server 2008 R2.

2021-08-30 Primary ApsaraDB RDS for SQL Server instance types
PostgreSQL New feature Time zone configuration at instance creation Users can configure the time zone of an RDS instance when they create the instance. 2021-08-20 Create an ApsaraDB RDS for PostgreSQL instance
MariaDB TX Performance improvement Reconfiguration of the Buffer_Pool_Size parameter Users can reconfigure the Buffer_Pool_Size parameter of an RDS instance on the Parameters page of the instance in the ApsaraDB RDS console. 2021-08-16 Adjust the size of the InnoDB buffer pool for an ApsaraDB RDS for MariaDB TX instance
MySQL New feature Transparent Data Encryption (TDE) for RDS instances that run MySQL 5.7 on RDS Enterprise Edition TDE is supported. TDE can be used to perform real-time I/O encryption and decryption on data files. Developers can use TDE without the need to modify the configurations of their applications. 2021-08-16 Configure TDE for an ApsaraDB RDS for MySQL instance
MySQL New feature Automatic scale-up for RDS instances that use local SSDs The automatic scale-up feature of Database Autonomy Service (DAS) can automatically scale an RDS instance up during peak hours to ensure the stability of the RDS instance. This feature is supported only for RDS instances that use local SSDs. 2021-08-16 Enable the automatic scale-up feature for an ApsaraDB RDS for MySQL instance
MySQL Performance improvement CreateDBInstance operation Users can call the CreateDBInstance operation to create multiple RDS instances at a time. 2021-08-13 Create an instance
SQL Server New feature TDE with Bring Your Own Keys (BYOKs) BYOKs can be used for TDE. 2021-08-04 Configure TDE for an ApsaraDB RDS for SQL Server instance

July 2021

Database engine Category Feature Description Release date References
SQL Server New feature Downloads of physical backup files of individual databases The physical backup file of each individual database that is created on an RDS instance can be downloaded. 2021-07-29 Download the data backup files and log backup files of an ApsaraDB RDS for SQL Server instance
PostgreSQL Performance improvement Username length The username of each account on an RDS instance that uses standard SSDs or ESSDs is adjusted to 2 to 63 characters in length. 2021-07-20 Create an account on an ApsaraDB RDS for PostgreSQL instance
SQL Server New feature TDE TDE is supported for RDS instances that run SQL Server 2019 SE. 2021-07-09 Configure TDE for an ApsaraDB RDS for SQL Server instance
MySQL New feature Automatic scale-up The automatic scale-up feature of DAS can automatically scale an RDS instance up during peak hours to ensure the stability of the RDS instance. 2021-07-01 Enable the automatic scale-up feature for an ApsaraDB RDS for MySQL instance
PostgreSQL New feature Major engine version upgrade The major engine version of an RDS instance that runs RDS Basic Edition can be upgraded. 2021-07-01 Upgrade the major engine version of an ApsaraDB RDS for PostgreSQL instance

June 2021

Database engine Category Feature Description Release date References
PostgreSQL New feature Fully encrypted databases Fully encrypted databases are supported for RDS instances that run PostgreSQL 11. Data from database clients is encrypted before it is transmitted to fully encrypted databases. Fully encrypted databases help defend against internal and external security threats and provide around-the-clock protection for user data. 2021-06-16 Create a fully encrypted ApsaraDB RDS for PostgreSQL instance
SQL Server Performance improvement Collection of network traffic statistics

The traffic statistics of RDS instances that run RDS Basic Edition, RDS High-availability Edition, or RDS Cluster Edition are collected from Windows network adapters. This way, the traffic statistics can reflect the network bandwidth usage more accurately.

After a backup is created for an RDS instance that runs one of the preceding RDS editions, the traffic on the Monitoring and Alerts page of the instance in the ApsaraDB RDS console significantly increases within a short period of time.

2021-06-04 View the resource metrics and engine metrics of an ApsaraDB RDS for SQL Server instance
MySQL, SQL Server, PostgreSQL, and MariaDB TX New feature Alerting An alerting system can be built for an ApsaraDB RDS instance with a few clicks. This alerting system helps users monitor crucial metrics and identify abnormal metrics at the earliest opportunity. 2021-06-01 Configure an alert rule for an ApsaraDB RDS for MySQL instance
MySQL New feature Metric A new metric is added to the ApsaraDB RDS console. This metric indicates the number of bytes that is written to the redo log files of an RDS instance per second. 2021-06-01 View the resource metrics, engine metrics, and deployment metrics of an ApsaraDB RDS for MySQL instance

May 2021

Database engine Category Feature Description Release date References
MariaDB TX New feature ESSDs ESSDs are supported for ApsaraDB RDS for MariaDB TX instances. 2021-05-27 Create an ApsaraDB RDS for MariaDB TX instance
MySQL, SQL Server, PostgreSQL, and MariaDB TX New feature Selection of zones for secondary RDS instances The zones of secondary ApsaraDB RDS instances can be selected. 2021-05-27
PostgreSQL New feature SSL encryption SSL encryption with custom certificates is supported for RDS instances that run PostgreSQL 10 or a later version and use standard SSDs or ESSDs. 2021-05-06 Configure SSL encryption for an ApsaraDB RDS for PostgreSQL instance

April 2021

Database engine Category Feature Description Release date References
SQL Server New feature SQL Server 2019 EE SQL Server 2019 EE is supported. 2021-04-27 Features of ApsaraDB RDS for SQL Server instances
SQL Server New feature Metrics Metrics that are used to monitor the IOPS, transactions per second (TPS), and queries per second (QPS) of an RDS instance can be specified in alert rules. 2021-04-22 Configure an alert rule for an ApsaraDB RDS for SQL Server instance
SQL Server New feature Snapshot backups Snapshot backups are supported for RDS instances that use standard SSDs or ESSDs. 2021-04-06 Enable the snapshot backup feature for an ApsaraDB RDS for SQL Server instance

March 2021

Database engine Category Feature Description Release date References
MySQL New feature Custom upgrade time The time at which ApsaraDB RDS upgrades the database engine version of an RDS instance from MySQL 5.5 to MySQL 5.6 can be customized. 2021-03-26 Upgrade the major engine version of an ApsaraDB RDS for MySQL instance
SQL Server New feature Display of error logs The error logs of RDS instances can be displayed in the ApsaraDB RDS console. 2021-03-26 View the error logs of an ApsaraDB RDS for SQL Server instance
SQL Server Performance improvement Uppercase letters in database names Uppercase letters are allowed in the names of databases that are created on RDS instances. 2021-03-23 Create a database on an ApsaraDB RDS for SQL Server instance
PostgreSQL New feature Single-digit second backups Single-digit second backups are supported. After single-digit second backups are enabled for an RDS instance, ApsaraDB RDS can complete a backup in 1 second. 2021-03-18 Back up an ApsaraDB RDS for PostgreSQL instance
PostgreSQL Performance improvement Storage type upgrade The storage types of RDS instances can be upgraded. For example, the storage type of an RDS instance can be upgraded from standard SSDs to ESSDs. 2021-03-18 Change the specifications of an ApsaraDB RDS for PostgreSQL instance
MySQL New feature Custom password policies The password policies of RDS instances that run MySQL 5.7 can be modified to increase password strength. 2021-03-12 Configure a custom password policy for an ApsaraDB RDS for MySQL instance
MySQL Performance improvement Recycle bin The policies based on which RDS instances are moved to the recycle bin are modified. Only the RDS instances that meet the specified conditions are moved to the recycle bin after these instances expire or are released. 2021-03-12 Manage ApsaraDB RDS for MySQL instances in the recycle bin
PostgreSQL New feature Cross-region backups Cross-region backups are supported for RDS instances. After cross-region backups are enabled for an RDS instance, ApsaraDB RDS can automatically replicate the backup files of the RDS instance to a different region. The cross-region data backup files can be used to monitor and restore the data of the RDS instance. 2021-03-05 Enable cross-region backups for an ApsaraDB RDS for PostgreSQL instance

February 2021

Database engine Category Feature Description Release date References
PostgreSQL New feature Major engine version upgrade The major engine version of an RDS instance can be upgraded. 2021-02-08 Upgrade the major engine version of an ApsaraDB RDS for PostgreSQL instance