October 2026

API	Release date	Change log	Related functions
add CreateSQLConcurrencyControlRule	2026-10-15	New API.	SQL throttling
add ModifySQLConcurrencyControlRule
add DescribeSQLConcurrencyControlRules
add SwitchSQLConcurrencyControlRule
add DeleteSQLConcurrencyControlRule
update CreateDBInstance			Updated the value range of request parameter DBEngineVersion, adding PostgreSQL_18.	CreateDBInstance
update DescribeBackups			Updated the return parameter DBEngineVersion value range to include PostgreSQL_18.	DescribeBackups
update DescribeDetachedBackups					DescribeDetachedBackups
update DescribeDBInstanceParameters					DescribeDBInstanceParameters
update DescribeDBInstances					DescribeDBInstances
update DescribeDBInstanceDetail					DescribeDBInstanceDetail
update DescribeDBInstanceSpecs			Updated the value range of request parameter DBEngineVersion, adding PostgreSQL_18.	DescribeDBInstanceSpecs
update DescribeDBInstanceProxyParameters			Updated the return parameter DBEngineVersion value range to include PostgreSQL_18.	DescribeDBInstanceProxyParameters
add DescribeDBEngineVersionParameters			Updated the value range of request parameter DBEngineVersion, adding PostgreSQL_18.	DescribeDBEngineVersionParameters
add CreateParameterTemplate					CreateParameterTemplate
add ListParameterTemplates					ListParameterTemplates
add DescribeParameterTemplate					DescribeParameterTemplate
update Common structure - BasicInfoObject			Updated the parameter DBEngineVersion value range, adding PostgreSQL_18.	-
update Common structure - InstanceInfoObject
update Common structure - InstanceObject
update Common structure - InstanceSpecObject

June 2026

API	Release date	Change log	Related functions
update CreateDBInstance	2026-06-03	Added request parameters TDEEnable and KMSTrn.	Managing instances
update DescribeDBInstanceDetail	2026-06-03		Managing instances	Add response parameters TDEEnable and KMSTrn.

April 2026

API	Release date	Change log	Related functions
update CreateAllowList	2026-04-16	Updated the description of request parameters UserAllowList and AllowList, adding explanations on the validity of values when both are passed simultaneously.	Data security

March 2026

API	Release date	Change log	Related functions
update CreateDBInstance	2026-03-30	Update the description of parameter StorageSpace due to different specification supporting storage space ranges	Managing instances
update DescribeDBInstancePriceDetail
update DescribeDBInstancePriceDifference
update ModifyDBInstanceSpec
update RestoreToNewInstance					Backup and recovery
update Common structure - InstanceSpecObject			Added parameters StorageSpaceMax and StorageSpaceMin to specify the maximum and minimum storage space supported by the current specification respectively.	- DescribeDBInstanceSpecs

January 2026

API	Release date	Change log	Related functions
update ModifyDBInstanceParameters	2026-01-09	Updated the request type of the API from "Sync request" to "Async request".	Managing connections
update ModifyDBEndpointReadWriteFlag					Managing parameters
update CreateDBInstance			Added the request parameter MaintenanceWindow.	Managing instances
update DescribeDBInstances			Added return parameter MaintenanceWindow.
update DescribeDBInstanceDetail			Added return parameter MaintenanceWindow.
update ModifyDBInstanceSpec			Added the request parameters SwitchType, SwitchType, and SpecifiedSwitchEndTime.
update RestoreToNewInstance			Added the request parameter MaintenanceWindow.	Backup and recovery
add ModifyPlannedEventExecuteTime			New API.	Event management
add ModifyTask			New API.		Managing tasks

December 2025

API	Release date	Change log	Related functions
add DescribeWALLogBackups	2025-12-02	Added a new API: DescribeWALLogBackups to retrieve the list of backed-up WAL logs for a specified instance.	Backup and recovery
update DescribeDBInstances			Added PrivateNetworkVpcId parameter for filtering instances using the specified virtual private cloud.	Managing instances
update DescribeDBInstanceParameters			Added return parameter NoneKernelParameters to return the current parameter configuration of the instance (non-kernel parameters).	Managing parameters

October 2025

API	Release date	Change log	Related functions
update DescribeBackupPolicy	2025-10-13	Added return parameter DataIncrBackupPeriods to describe the backup frequency for the backup method as normal frequency, with a prompt that if the instance does not enable incremental backup, this field will not be returned. Added return parameter HourlyIncrBackupEnable to describe whether the high frequency backup function is enabled. Modified the return parameter IncrementBackupFrequency description, add the 12 value for high frequency incremental backup frequency, and explain that this parameter only takes effect when HourlyIncrBackupEnable is set to true.	Backup and recovery
update ModifyBackupPolicy	2025-10-13		Backup and recovery	Added to the prompt of the FullBackupPeriod parameter: choose at least one day each week for full backup. Added parameter DataIncrBackupPeriods: sets the backup frequency for incremental backups with normal frequency. Values must not overlap with the full backup schedule, and up to six days per week can be selected for incremental backup. Added parameter HourlyIncrBackupEnable: controls whether to enable high-frequency backup. Modified the description of the IncrementBackupFrequency parameter: added value 12 and clarified this applies only when HourlyIncrBackupEnable is true.
update DescribeDBInstances	October.14 2025	The StorageType parameter is added to the body parameter of DescribeDBInstances API to specify the instance storage type, and the fixed value LocalSSD (local SSD disk) is used. The CrossRegionDomain parameter is added to the AddressObject structure to indicate the private network address accessible across regions. This field is not returned if no such address exists. The DomainVisibilitySetting parameter is added to the AddressObject structure to indicate the private network address type. The values are LocalDomain (local domain name) or CrossRegionDomain (cross-region accessible domain name).	Managing instances
update DescribeDBInstanceDetail	October.14 2025			Added CrossRegionDomain parameter in AddressObject to describe private network addresses accessible across regions. Added DomainVisibilitySetting parameter in AddressObject to describe private network address types, including local domain names and cross-region accessible domain names.
update DescribeDBInstanceSpecs	2025-10-13	Added StorageType request parameter to specify instance storage type, fixed value LocalSSD (local SSD disk). Added StorageType field to the returned parameter InstanceSpecObject to return the instance storage type information, with a fixed value of LocalSSD (local SSD disk).
update ModifyDBInstanceSpec				Added EstimateOnly parameter to initiate configuration adjustment evaluation. When set to true, it returns EstimationResult, which describes the impact of this configuration adjustment. Added EstimationResult field to the returned parameters to describe the estimated impact on the instance based on the current configuration change. Added description to the OrderId field in the returned parameters. When EstimateOnly is set to true, this field returns empty. Added ModifyDBInstanceSpecEstimationResult object, containing Plans and Effects fields, which describe the impact on the instance and read/write connections after the modification.
add DescribeDBInstanceSSL			Added DescribeDBInstanceSSL API to query the SSL settings of the specified instance. This API supports querying the following information: Protected address Force encryption status SSL certificate validity SSL function enabled status SSL certificate expiration time Supported TLS versions	Data security
add ModifyDBInstanceSSL			Added the ModifyDBInstanceSSL interface to modify the SSL configuration of the specified instance. This interface supports the following functions: Enabled or disabled SSL encryption (via SSLEnable parameter) Updated SSL certificate validity period (via ReloadSSLCertificate parameter) Enabled or disabled SSL force encryption (via ForceEncryption parameter) Updating the SSL certificate validity and force encryption features only take effect when the instance has the SSL encryption feature enabled. It does not support passing ReloadSSLCertificate and SSLEnable parameters at the same time;
add DownloadSSLCertificate			Added the DownloadSSLCertificate interface to download the SSL certificate of the specified instance. This API requires an instance ID as a mandatory parameter and returns a compressed certificate package.
add DescribeTasks			Added DescribeTasks API to query task information. This API supports querying task details by task ID or task time range and returns the execution status, duration, creation time, and other information of the task.	Managing tasks

August 2025

API	Release date	Change log	Related functions
update DescribeAllowListDetail	2025-08-26	- Added return parameter AssociatedInstanceNum.	Viewing allowlist details

July 2025

API	Release date	Change log	Related functions
update CreateDBInstance	2025-07-31	- Added AllowListIds parameter for associating allowlists. Support associating multiple allowlists, separated by English commas. A single instance can associate up to 100 allowlists.	Creating an instance
update DescribeBackups			- Added AllowListIds parameter in InstanceInfoObject to describe the allowlist information associated with the backup instance.	-
update DescribeDetachedBackups			- Added AllowListIds parameter in the InstanceInfoObject structure to describe the allowlists bound to the instance to which the backup belongs.	-
update RestoreToNewInstance			- Added AllowListIds parameter for associating with allowlists. Supports binding multiple allowlists, up to 100 allowlists can be associated.	Restoring to a new instanceRestoring to new instance
update DescribePlannedEvents			- Added MaxDelayTime parameter to indicate the latest postponed time of operation and maintenance events, formatted as yyyy-MM-ddTHH:mm:ss.sssZ (UTC time).	Viewing operation and maintenance events
update DescribeAllowLists			Added request parameter AllowListCategory to specify allowlist category, with values including Ordinary (ordinary allowlist) and Default (default allowlist), defaulting to Ordinary. Added request parameter AllowListDesc for fuzzy search of allowlists by description. Added request parameter AllowListId for querying by allowlist ID. Added request parameter AllowListName for querying by allowlist name. Added request parameter IPAddress to support querying allowlists by IP address. Multiple IP addresses can be separated by commas. Added request parameter PageNumber to specify the current page number. The default value is 1. Added request parameter PageSize to specify the number of records per page. No default value. Added return parameter Total to indicate the total number of allowlists. Added field AllowListCategory in AllowListObject to indicate the allowlist category. Added field SecurityGroupBindInfos in AllowListObject to indicate security group binding information for allowlists, including security group ID, name, IP list, and association mode. Added data structure SecurityGroupBindInfo to describe security group binding information, including fields such as IpList, BindMode, SecurityGroupId, and SecurityGroupName.	-
update DescribeAllowListDetail			Added return parameter AllowListCategory to identify the allowlist category, with values including Ordinary (ordinary allowlist) and Default (default allowlist). The default value is Ordinary. Added return parameter SecurityGroupBindInfos to describe the security group list bound to the allowlist, including IPs in the security group, associated security group mode, security group ID, and security group name. Added the return parameter UserAllowList to describe IP addresses or CIDR-formatted IP address segments outside the security groups that need to be added to the allowlist.	-
update CreateAllowList			AllowList parameter changed from required to optional, with a new prompt: this field cannot be used simultaneously with UserAllowList. Added AllowListCategory parameter to specify allowlist category, optional values: Ordinary (ordinary allowlist) and Default (default allowlist), default value is Ordinary. Added SecurityGroupBindInfos parameter to bind security group information to the allowlist, including subparameters IpList, BindMode, SecurityGroupId, and SecurityGroupName. Added UserAllowList parameter to specify IP addresses to be added to the allowlist outside the security group, this field cannot be used simultaneously with AllowList. Added SecurityGroupBindInfo data structure including fields IpList, BindMode, SecurityGroupId, and SecurityGroupName.	Creating an allowlist
update ModifyAllowList			Added warning in ModifyMode parameter description: if the allowlist to be modified is bound to a security group, or if binding a security group when modifying the allowlist is required, then ModifyMode can only take the value Cover. Added AllowListCategory parameter to specify the allowlist category, with values Ordinary (ordinary allowlist) or Default (default allowlist). The default value is Ordinary. Added SecurityGroupBindInfos parameter to provide information for associating security groups with the allowlist, including IpList, BindMode, SecurityGroupId, and SecurityGroupName. Added UpdateSecurityGroup parameter to control whether to update the security groups bound to the allowlist, with values true (update) or false (no update). The default value is false. Added UserAllowList parameter to specify IP addresses to add to the allowlist outside of security groups, supporting both individual IP addresses and CIDR-format IP address ranges. Added SecurityGroupBindInfo structure to describe security group binding information, including IpList, BindMode, SecurityGroupId, and SecurityGroupName.	Modifying an allowlist

June 2025

API	Release date	Change log	Related functions
add CloneDatabase	2025-06-04	New API.	Cloning a database
add CloneParameterTemplate					Managing parameter template
add CreateParameterTemplate					Creating a parameter template
add DeleteBackup					Deleting data backup
add DeleteParameterTemplate					Managing parameter template
add DescribeApplyParameterTemplate					Apply parameter template
add DescribeDBEngineVersionParameters					-
add DescribeParameterTemplate					Managing parameter template
add DownloadBackup					Downloading data backup files
add GetBackupDownloadLink					Downloading data backup files
add ListParameterTemplates					Managing parameter template
add ModifyParameterTemplate					Managing parameter template
add RestoreToExistedInstance					Restoring to existing instance
add SaveAsParameterTemplate					Exporting parameter configuration as parameter template
update CreateBackup			Added request parameters BackupScope, BackupMethod, BackupDescription, BackupMeta. Added the return parameter BackupId.	Creating a data backup
update DescribeBackups			Added request parameters DownloadStatus, BackupMethod, BackupDatabaseName, BackupDescription, CreateType, and BackupScope. Added return parameter BackupId.	-
update ModifyDBEndpointReadWeight			Updated the description of the request parameter WriteNodeHaltWriting.
update ModifyDBEndpointReadWriteFlag
add Common structure - BackupMetaObject			Add a new struct.	CreateBackup DescribeBackups
update Common structure - BackupObject			Added parameters BackupDataSize, BackupDescription, BackupMeta, BackupMethod, BackupScope, and DownloadStatus. Updated value ranges for parameters BackupStatus, BackupType, and CreateType.	DescribeBackups

April 2025

API	Release date	Change log	Related functions
add ModifyDBEndpointProxyConfig	2025-04-22	New API.	Editing connection endpoints
add DescribeDBInstanceProxyParameters					-
add DescribePlannedEvents					Viewing operation and maintenance events
update CreateDatabase			Updated the description of the request parameter Owner to include the restriction that Owner cannot be designated as a super account with disabled DDL permission or a normal account with disabled DDL permission.	Creating a database
update CreateDBInstance			Updated the value range of request parameter DBEngineVersion, adding PostgreSQL_17.	Creating an instance
update CreateDBAccount			Added optional request parameter NotAllowPrivileges.	Creating an account
update CreateSchema			Updated the description of the request parameter Owner to include the restriction that Owner cannot be designated as a super account with disabled DDL permission or a normal account with disabled DDL permission.	Creating a schema
update DescribeDBInstances			Updated the value range of request parameter DBEngineVersion, adding PostgreSQL_17.	-
update DescribeDBInstanceSpecs
update DescribeDBInstanceParameters			Updated the return parameter DBEngineVersion value range to include PostgreSQL_17.
update ModifyDatabaseOwner			Updated the description of the request parameter Owner to include the restriction that Owner cannot be designated as a super account with disabled DDL permission or a normal account with disabled DDL permission.	Modifying the database owner
update ModifyDBEndpointReadWeight			Added the request parameter WriteNodeHaltWriting.	Setting read-write separation weight
update ModifyDBEndpointReadWriteFlag			Updated the descriptions of the request parameters ReadOnlyNodeMaxDelayTime and ReadOnlyNodeDistributionType. Add request parameters ReadWriteProxyConnection and WriteNodeHaltWriting.	Setting read-write separation weight
update ModifySchemaOwner			Updated the description of the request parameter SchemaInfoObject > Owner, adding the restriction that Owner cannot be set as a super account or normal account with DDL permissions disabled.	Modifying schema owner
add Common structure - PlannedEventsObject			New common structure.	DescribePlannedEvents
update Common structure - AccountObject			Added parameter NotAllowPrivileges.	DescribeDBAccounts
update Common structure - BasicInfoObject			Updated the parameter DBEngineVersion value range, adding PostgreSQL_17.	DescribeDBInstanceDetail
update Common structure - ChargeInfoObject			Updated the parameter Number's value range.	CreateDBInstance DescribeDBInstancePriceDetail DescribeDBInstancePriceDifference RestoreToNewInstance
update Common structure - DatabaseObject			Modified the description of parameter Owner. Added information that super accounts with DDL privileges disabled or normal accounts with DDL privileges disabled cannot be used as database owners.	DescribeDatabases
update Common structure - EndpointObject			Added parameters ReadWriteProxyConnection and WriteNodeHaltWriting.	DescribeDBInstances DescribeDBInstanceDetail
update Common structure - InstanceInfoObject			Updated the parameter DBEngineVersion value range, adding PostgreSQL_17. Added parameter Endpoints.	DescribeBackups DescribeDetachedBackups
update Common structure - InstanceObject			Updated the parameter DBEngineVersion value range, adding PostgreSQL_17.	DescribeDBInstances
update Common structure - InstanceSpecObject					DescribeDBInstanceSpecs
update Common structure - SchemaObject			Modified the description of parameter Owner. Added information that super accounts with DDL privileges disabled or normal accounts with DDL privileges disabled cannot be used as schema owners.	DescribeSchemas ModifySchemaOwner

February 2025

API	Release date	Change log	Related functions
update CreateDatabase	2025-02-19	Updated request parameter Ctype to CType.	Creating a database
update DescribeBackups			Updated return parameter StorageSpace type to Integer.	-
update DescribeDetachedBackups			Updated return parameter StorageSpace type to Integer.
update DescribeDBInstanceParameters			Updated the sample value of the request ParameterName. Updated the API return example. Added the descriptionZH field to the return parameters data structure.
update ModifyDBInstanceParameters			Removed the checkingCode, defaultValue, description, restart instance and type fields from the request parameter parameters data structure.	Modifying parameters
update DescribeSlots			Added the request parameter IPAddress. Added the IPAddress field to the return parameter ReplicationSlots data structure.	Viewing replication slot list
update DeleteSlot			Updated interface precautions.	Deleting replication slot

December 2024

API	Release date	Change log	Related functions
update CreateDBInstance	2024-12-11	Updated request parameter DBEngineVersion value range, adding PostgreSQL_15 and PostgreSQL_16.	Creating an instance
update DescribeDBInstances			Added notes to the API. Updated request parameter DBEngineVersion value range, adding PostgreSQL_15 and PostgreSQL_16.	-
update DescribeDBInstanceDetail			Updated the value range of return parameter DBEngineVersion to include PostgreSQL_15 and PostgreSQL_16.
update DescribeDBInstanceSpecs			Added notes to the API. Updated request parameter DBEngineVersion value range, adding PostgreSQL_15 and PostgreSQL_16.
update RestartDBInstance			Updated the description of the request parameters ApplyScope and CustomNodeIds.	Restarting an instance or read-only node(s)
update DescribeDBInstancePriceDetail			Updated description information for the parameter NodeOperateType.	-
update DescribeDBInstancePriceDifference				-
update ModifyDBInstanceChargeType			Updated the description of request parameter Period.	Switch to Subscription
update RemoveTagsFromResource			Updated the description of the request parameter All.	Disassociating a tag
update CreateDatabase			Updated the description of request parameter Owner.	Creating a database
update DescribeDatabases			Updated the description for the DBName parameter.	-
update DescribeDBAccounts			Updated the description for the AccountName field.
update DescribeSchemas			Updated the description for the DBName parameter.
update CreateDBEndpoint			Updated the description for the EndpointName parameter.	Creating a connection endpoint
update ModifyDBInstanceConfig			Updated the description for the GlobalReadOnly parameter.	Enabling global read-only
update ModifyDBEndpointReadWeight			Updated the value range of the ReadOnlyNodeDistributionType request parameter.	Setting read-write separation weight
update ModifyDBEndpointReadWriteFlag			Updated the description of the request parameter ReadWriteSpliting.	Setting read-write separation weight
update ModifyDBEndpointAddress			Added notes to the API.	Modifying private network access port Modifying private network address prefix
update DescribeDBInstanceParameters			Updated the description of the request parameter ParameterName. Updated the value range of return parameter DBEngineVersion to include PostgreSQL_15 and PostgreSQL_16.	-
update ModifyDBInstanceParameters			Updated the descriptions of the request parameter Type's value range and sample value.	Modifying parameters
update DescribeBackups			Updated the descriptions of the request parameters BackupId, BackupStartTime, BackupEndTime, BackupStatus, and BackupType. Updated the value range of return parameter DBEngineVersion to include PostgreSQL_15 and PostgreSQL_16.	-
update ModifyBackupPolicy			Updated description for request parameters BackupRetentionPeriod, FullBackupTime, FullBackupPeriod, IncrementBackupFrequency, and WALLogSpaceLimitEnable.	Customizing backup policies
update DescribeDetachedBackups			Updated description for request parameters InstanceId, InstanceName, BackupStartTime, BackupEndTime, ProjectName, BackupStatus, BackupType.	-
update RestoreToNewInstance			Updated description information for the parameter NodeOperateType.	Restoring to a new instanceRestoring to new instance
update DescribeSlots			Updated the description of the request parameters SlotName, SlotType, Plugin, Database, Temporary, SlotStatus.	-
update DeleteSlot			Updated the description of the request parameter All.	Deleting replication slot
update DescribeFailoverLogs			Updated descriptions of request parameters QueryStartTime, QueryEndTime, and Context.	Deleting replication slot
update CreateAllowList			Updated description information for request parameters AllowListName and AllowListDesc.	Creating an allowlist
update ModifyAllowList			Updated description information for request parameters AllowListName, AllowListDesc, AllowList, ModifyMode, ApplyInstanceNum.	Modifying an allowlist
update UnifyNewAllowList			Updated description information for request parameters AllowListName and AllowListDesc.	Merging allowlists

October 2024

API	Release date	Change log	Related functions
update DescribeBackupPolicy	2024-10-24	Added return parameter WALLogSpaceLimitEnable.	Configuring local remaining available space protection
update ModifyBackupPolicy	2024-10-24		Added request parameter WALLogSpaceLimitEnable.	Customizing backup policies

August 2024

API	Release date	Change log	Related functions
update CreateDBInstance	2024-08-28	Updated descriptions of parameters VpcId and SubnetId, adding restrictions on value ranges.	Creating an instance
update RestoreToNewInstance	2024-08-28			Restore to new instance

July 2024

API	Release date	Change log	Related functions
add DescribeSlots	2024-07-30	New API.	Viewing replication slot list
add DeleteSlot		New API.			Deleting replication slot
update CreateDBInstance			Updated the valid range for the parameter DBEngineVersion.	Creating an instance
update DescribeDBInstances					-
update DescribeDBInstances
update DescribeDBInstanceParameters			Updated the return parameter DBEngineVersion value range.
update DescribeDBInstanceDetail			Updated the value range of parameter DBEngineVersion.
update DescribeBackups
update DescribeDetachedBackups

June 2024

API	Release date	Change log	Related functions
update ModifyDBEndpointAddress	2024-06-20	Updated API to add usage restrictions.	Modifying private network address prefix Modifying private network access port
update RestartDBInstance	2024-06-12	Updated API to add fields related to restarting specified read-only nodes.	Restarting an instance or read-only node(s)

April 2024

API	Release date	Change log	Related functions
add DescribeAllowLists	2024-04-25	New API.	Managing allowlists (new version)
add DescribeAllowListDetail			Managing allowlists (new version)
add CreateAllowList				Creating an allowlist
add ModifyAllowList				Modifying an allowlist
add AssociateAllowList				Associating with an allowlist
add DisassociateAllowList				Disassociating with allowlists
add DeleteAllowList				Deleting an allowlist
add UnifyNewAllowList				Merging allowlists
add UpgradeAllowListVersion				Upgrading allowlist

RDS for PostgreSQL