Relational Database Service
Relational Database Service
- What's New
- Function Overview
- Product Bulletin
- Service Overview
- Billing
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Getting Started
- Getting Started with RDS for MySQL
- Getting Started with RDS for MariaDB
- Getting Started with RDS for PostgreSQL
- Change History
- Kernels
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User Guide
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Working with RDS for MySQL
- Database Usage
- Database Migration
- Version Upgrade
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Instance Management
- Instance Lifecycle
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Instance Modifications
- Changing a DB Instance Name
- Changing a DB Instance Description
- Changing the Replication Mode
- Changing the Failover Priority
- Changing Read/Write Permissions
- Changing a DB Instance Class
- Scaling Up Storage Space
- Configuring Storage Autoscaling
- Changing the Maintenance Window
- Changing a DB Instance Type from Single to Primary/Standby
- Promoting a Read Replica to Primary
- Manually Switching Between Primary and Standby DB Instances
- Changing the AZ of a Standby DB Instance
- Data Backups
- Data Restorations
- Read Replicas
- Viewing and Changing a Floating IP Address
- Binding and Unbinding an EIP
- Changing a Database Port
- Applying for and Changing a Private Domain Name
- Configuring a Security Group Rule
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Database Proxy (Read/Write Splitting)
- Introduction to RDS for MySQL Database Proxies
- Constraints on Database Proxy
- Using RDS for MySQL Database Proxies for Read/Write Splitting
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Database Proxy Configurations
- Configuring Transaction Splitting
- Configuring Connection Pools
- Modifying Read/Write Splitting Parameters
- Configuring the Delay Threshold and Routing Policy
- Enabling or Disabling Access Control
- Changing the Read/Write Splitting Address
- Changing the Read/Write Splitting Port
- Changing the Number of Proxy Nodes
- Changing the Instance Class of a DB Proxy Instance
- Configuring Multi-Statement Processing Modes
- Changing a Proxy from Pay-per-Use to Yearly/Monthly
- Database Proxy Lifecycle
- Database Proxy Kernel Versions
- Best Practices for Database Proxy
- Problem Diagnosis and SQL Analysis
- Security and Encryption
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Parameters
- Modifying Parameters of an RDS for MySQL Instance
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Managing Parameter Templates
- Creating a Parameter Template
- Exporting a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Suggestions on RDS for MySQL Parameter Tuning
- Log Management
- Metrics
- Interconnection with CTS
- Task Center
- RDS for MySQL Tags
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Working with RDS for MariaDB
- Suggestions on Using RDS for MariaDB
- Instance Connection
- Parameter Tuning
- Instance Lifecycle
- Instance Modifications
- Read Replicas
- Data Backups
- Data Restorations
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Parameter Templates
- Creating a Parameter Template
- Modifying RDS for MariaDB Instance Parameters
- Exporting a Parameter Template
- Importing a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Connection Management
- Database Management
- Account Management (Non-Administrator)
- Account and Network Security
- Metrics
- Interconnection with CTS
- Log Management
- Task Center
- Managing Tags
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Working with RDS for PostgreSQL
- Database Usage
- Database Migration
- Common Performance Problems
- Instance Lifecycle
-
Instance Modifications
- Upgrading a Minor Version
- Changing a DB Instance Name
- Changing a DB Instance Description
- Changing the Replication Mode
- Changing the Failover Priority
- Changing a DB Instance Class
- Scaling Storage Space
- Changing the Maintenance Window
- Changing a DB Instance Type from Single to Primary/Standby
- Manually Switching Between Primary and Standby DB Instances
- Changing the AZ of a Standby DB Instance
- Read Replicas
- Data Backups
- Data Restorations
-
Parameters
- Modifying Parameters of an RDS for PostgreSQL Instance
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Managing Parameter Templates
- Creating a Parameter Template
- Exporting a Parameter Template
- Comparing Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Resetting a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying a Parameter Template Description
- Deleting a Parameter Template
- Suggestions on RDS for PostgreSQL Parameter Tuning
- Connection Management
- Extension Management
- Tablespace Management
- Security and Encryption
- Metrics
- Interconnection with CTS
- Log Management
- Task Center
- Major Version Upgrade
- RDS for PostgreSQL Tags
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Working with RDS for MySQL
- Best Practices
- Performance White Paper
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API Reference
- Before You Start
- API Overview
- Calling APIs
- API v3.1 (Recommended)
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API v3 (Recommended)
- Querying Version Information About APIs
- Querying Version Information About a DB Engine
- Querying Database Specifications
- Querying the Storage Type of a Database
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DB Instance Management
- Creating a DB Instance
- Stopping an Instance
- Changing a DB Instance Name
- Changing the Description of a DB Instance
- Changing DB Instance Specifications
- Scaling Up Storage Space of a DB Instance
- Changing a Single DB Instance to Primary/Standby DB Instances
- Rebooting a DB Instance
- Deleting a DB Instance
- Querying DB Instances
- Binding and Unbinding an EIP
- Changing the Failover Priority
- Manually Switching Primary/Standby DB Instances
- Changing the Data Replication Mode of Primary/Standby DB Instances
- Configuring the Maintenance Window
- Database Security
- Backup and Restoration
- Log Information Queries
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Database and Account Management (MySQL)
- Creating a Database
- Querying Details About a Database
- Querying Databases
- Querying Authorized Databases of a Specified User
- Deleting a Database
- Creating a Database Account
- Querying Database Users
- Querying Authorized Users of a Specified Database
- Deleting a Database Account
- Configuring a Password for a Database Account
- Authorizing a Database Account
- Revoking Permissions of a Database Account
- Resetting the Password for User root
- Database and Account Management (PostgreSQL)
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Parameter Management
- Obtaining a Parameter Template List
- Creating a Parameter Template
- Modifying a Parameter Template
- Applying a Parameter Template
- Modifying Parameters of a Specified DB Instance
- Obtaining the Parameter Template of a Specified DB Instance
- Obtaining Parameters in a Specified Parameter Template
- Deleting a Parameter Template
- Recycling a DB Instance
- Tag Management
- Obtaining Task Information
- Appendix
- Change History
- SDK Reference
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FAQs
- Product Consulting
- Resource and Disk Management
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Database Connection
- What Should I Do If I Can't Connect to My RDS DB Instance?
- Can an External Server Access the RDS Database?
- What Do I Do If the Number of RDS Database Connections Reaches the Upper Limit?
- What Is the Maximum Number of Connections to an RDS DB Instance?
- How Can I Create and Connect to an ECS?
- What Should I Do If an ECS Cannot Connect to an RDS DB Instance Through a Private Network?
- What Should I Do If a Database Client Problem Causes a Connection Failure?
- What Should I Do If an RDS Database Problem Causes a Connection Failure?
- How Do My Applications Access an RDS DB Instance in a VPC?
- Do Applications Need to Support Reconnecting to the RDS DB Instance Automatically?
- Why Cannot I Ping My EIP After It Is Bound to a DB Instance?
- How Can I Obtain the IP Address of an Application?
- Can I Access an RDS DB Instance Over an Intranet Connection Across Regions?
- Is an SSL Connection to a DB Instance Interrupted After a Primary/Standby Switchover or Failover?
- Database Migration
- Database Permission
- Database Storage
- Client Installation
- Backup and Restoration
- Database Monitoring
- Capacity Expansion and Specification Change
- Database Parameter Modification
- Network Security
- Change History
- Troubleshooting
- Videos
On this page
Help Center/
Relational Database Service/
User Guide/
Working with RDS for MySQL/
Problem Diagnosis and SQL Analysis/
Problem Diagnosis/
Managing Anomaly Snapshots
Managing Anomaly Snapshots
Updated on 2025-03-19 GMT+08:00
Scenarios
This function intelligently detects instance anomalies and records information about session, lock, and transaction snapshots to facilitate subsequent fault locating.
Constraints
- Enabling anomaly collection will cause about 5% of instance performance loss.
- Each anomaly snapshot can be retained for a maximum of seven days. A maximum of 10 anomaly snapshots can be retained for each node at the same time.
- Anomaly snapshots record long-running transactions.
Enabling Anomaly Collection
- Log in to the management console.
- Click
in the upper left corner of the page and choose Databases > Relational Database Service. - On the Instances page, click the DB instance name.
- In the navigation pane, choose DBA Assistant > Historical Diagnosis.
- Click the Anomaly Snapshots tab.
- On the displayed page, toggle on the Anomaly Collection switch.
Viewing Anomaly Snapshots
- Click the Anomaly Snapshots tab.
- On the displayed page, view session snapshots, metadata lock snapshots, InnoDB lock snapshots, and transaction snapshots of the DB instance.
- To view anomaly causes, click Diagnosis Details in the Operation column.
- To view details about slow SQL statements, click Slow SQL in the Operation column. For details, see Viewing Slow Query Logs of a DB Instance.
Parent topic: Problem Diagnosis
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