Relational Database Service
Relational Database Service
- Product Bulletin
- Service Overview
- Billing
-
Getting Started
- Step 1: Set Up for RDS
- Buy an RDS for MySQL Instance
- Step 3: Connect to a DB Instance
- Example: Buy and Connect to an RDS for MySQL DB Instance
- Getting Started with RDS for MySQL Common Practices
- Kernels
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User Guide
- Using IAM to Grant Access to RDS
- Buying an RDS for MySQL DB Instance
- Instance Connection
- Database Usage
- Database Migration
- Version Upgrade
- Instance Management
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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
- Enabling or Disabling Event Scheduler
- Changing a DB Instance Class
- Changing a Storage Type
- Configuring Auto Scaling of vCPUs and Memory
- 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
- Updating the OS of a DB Instance
- Data Backups
- Data Restorations
- Read Replicas
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Database Proxy (Read/Write Splitting)
- Introduction to RDS for MySQL Database Proxy
- 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
- Applying for and Changing a Private Domain Name for a Database Proxy
- 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
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Security and Encryption
- Database Account Security
- Resetting the Administrator Password to Restore root Access
- Changing a Security Group
- Performing a Server-Side Encryption
- Configuring an SSL Connection
- Configuring the TDE Function
- Configuring a Password Expiration Policy
- Unbinding an EIP
- Using the Database of the Latest Version
- Using DBSS (Recommended)
- Parameters
- Log Management
- Metrics and Alarms
- Billing Management
- Interconnection with CTS
- Task Center
- RDS for MySQL Tags
- RDS for MySQL Quotas
- MySQL Memory Acceleration
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Best Practices
- Best Practices
- Migrating Data from Self-Managed MySQL Databases to RDS for MySQL
- Configuring Remote Single-Active DR for an RDS for MySQL Instance Using DRS
- Migrating MySQL Databases from Other Clouds to RDS for MySQL
- Using RDS for MySQL to Set Up WordPress
- Using RDS for MySQL to Set Up Discuz!
- Description of innodb_flush_log_at_trx_commit and sync_binlog
- How Do I Improve the Query Speed of My RDS for MySQL Instance?
- Handling RDS for MySQL Long Transactions
- Configuring a Scheduled Event for an RDS for MySQL Instance
- Security Best Practices
- MySQL Online DDL Tools
- Performance White Paper
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FAQs
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Product Consulting
- What Should I Pay Attention to When Using RDS?
- Will My RDS DB Instances Be Affected by Other User Instances?
- Will Different RDS DB Instances Share CPU and Memory Resources?
- How Long Does It Take to Create an RDS for MySQL Instance?
- What Can I Do About Slow Responses of Websites When They Use RDS?
- What Is the Time Delay for Primary/Standby Replication?
- Can Multiple ECSs Connect to the Same RDS DB Instance?
- Will Backups Be Encrypted After Disk Encryption Is Enabled for My RDS for MySQL Instance?
- What Is the Availability of RDS DB Instances?
- Does RDS Support Cross-AZ High Availability?
- Can RDS Primary/Standby DB Instances Be Changed to Single-Node DB Instances?
- What Are the Differences Between RDS for MySQL and TaurusDB?
- Does RDS Support CloudPond?
- What Encryption Functions Does RDS for MySQL Support?
- Is RDS for MySQL Compatible with MariaDB?
- Does RDS for MySQL Support TokuDB?
- What Are the Restrictions on RDS for MySQL Instances After GTID Is Enabled?
- What Is the Maximum Size Allowed for a Single Table in RDS for MySQL Instances?
- Can I Use an Encrypted Password to Log In to an RDS DB Instance?
- What Are the Differences Between Floating and Private IP Addresses of RDS DB Instances?
- What Can I Do If I Can't Find My RDS Resources?
- Resource Freezing, Release, Stopping, Deletion, and Unsubscription
- Resource and Disk Management
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Database Connection
- What Should I Do If I Can't Connect to My RDS DB Instance?
- 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?
- What Should I Do If an ECS Cannot Connect to an RDS DB Instance Through a Private Network?
- What Should I Do If My RDS Instance Fails to Be Connected Due to Database Client Problems?
- What Should I Do If an RDS Database Problem Causes a Connection Failure?
- Do Applications Need to Support Reconnecting to an RDS DB Instance Automatically?
- Why Can't I Ping My EIP After It Is Bound to an RDS DB Instance?
- Can I Access an RDS DB Instance Over an Intranet Connection Across Regions?
- Why Did the New Password Not Take Effect After I Reset the Administrator Password of My RDS Instance?
- Can I Access Standby RDS DB Instances?
- How Do I Check the Connections to an RDS for MySQL Instance?
- What Should I Do If an ECS and RDS Instance Deployed in Different VPCs Cannot Communicate with Each Other?
- Will My Access Be Restricted by Bandwidth When I Connect to My Instance from an ECS over a Private Network?
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Database Migration
- What Types of DB Engines Does RDS Support for Importing Data?
- Why Do I Need to Use the mysqldump or pg_dump Tools for Migration?
- What Should I Do When a Large Number of Binlog Files Cause Storage Space Insufficiency During an RDS MySQL Instance Migration?
- Precautions for Exporting Large Tables Through mysqldump
- Commands for Exporting Data Through mysqldump
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Database Permission
- Why Does the Root User of My RDS Instance Not Have the Super Permissions?
- What Are the Differences Between RDS ManageAccess and DAS Permissions?
- How Do I View Authorized Databases After a Local Client Is Connected to an RDS DB Instance?
- Can Multiple Users Log In to an RDS Instance Through DAS at the Same Time? Will the Accounts Be Locked If I Enter Wrong Passwords Several Times in a Row?
- Does RDS for MySQL Support Multiple Accounts?
- Database Storage
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Database Usage
- How Do I Use DAS to Query SQL Statements?
- How Do I View Session IDs and Login and Logout Time of an RDS Database?
- What Should I Do If the root Account of My RDS for MySQL Instance Was Deleted by Mistake?
- What Should I Do If Garbled Characters Are Displayed After SQL Query Results Are Exported to an Excel File for My RDS Instance?
- Does the OPTIMIZE TABLE Operation Lock Tables on an RDS DB Instance?
- Does RDS for MySQL 8.0 Support Full-Text Search?
- How Do I Use the mysqlbinlog Tool?
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Backup and Restoration
- How Do I View My Backup Storage Usage?
- How Is RDS Backup Data Billed?
- Why Has Automated Backup of My RDS Instance Failed?
- Why Is Data Lost or Deleted from My RDS Instance?
- How Long Does RDS Store Backup Data For?
- How Do I Clear RDS Backup Space?
- Can My RDS Instance Still Be Used in the Backup Window?
- How Can I Back Up an RDS Database to an ECS?
- Can I Dump RDS for MySQL Backups to My OBS Bucket?
- Does RDS for MySQL Support Table-Level Backup to a Specified OBS Bucket?
- Can I Delete the RDS for MySQL Backup Policy?
- Read Replicas and Read/Write Splitting
- Database Monitoring
- Capacity Expansion and Specification Change
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Database Parameter Modification
- Can I Use SQL Commands to Modify Global Parameters of My RDS Instance?
- How Do I Change the Time Zone of My RDS for MySQL Instance?
- How Do I Set the Encoding Format of the RDS for MySQL 8.0 Character Set?
- How Do I Set Case Sensitivity for RDS for MySQL Table Names?
- How Do I Enable Query Caching for My RDS for MySQL Instance?
- How Do I Configure a Password Expiration Policy for My RDS for MySQL Instance?
- How Do I Change the Transaction Isolation Level of an RDS for MySQL Instance?
- How Do I Ensure that the Character Set of an RDS MySQL Database Is Correct?
- How Do I Use the utf8mb4 Character Set to Store Emojis in an RDS for MySQL DB Instance?
- Where Should I Store NDF Files for RDS for SQL Server?
- Log Management
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Network Security
- How Can Data Security Be Ensured During Transmission When I Access an RDS Instance Through an EIP?
- How Can I Prevent Untrusted Source IP Addresses from Accessing RDS?
- How Do I Import the SSL Certificate of an RDS Instance to a Windows or Linux Server?
- How Do I Check the Validity Period of the SSL Certificate of My RDS for MySQL Instance?
- What Are the Possible Causes for Data Corruption of an RDS Instance?
- After My RDS DB Instance Is Deleted, Why Can't the Associated Security Group Be Deleted Immediately?
- Version Upgrade
- Developer-Related APIs and SDKs for RDS
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Product Consulting
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Troubleshooting
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Backup and Restoration Issues
- No SUPER Permissions When Restoring an RDS for MySQL Full Backup to a Local MySQL Database
- Backup Failures Due to DDL Operations
- Restoring an On-Premises or Huawei Cloud Backup File to an RDS DB Instance
- RDS for MySQL Backup Job Failure
- Manual Backups Taking More Time Than Automated Full Backups
- Incorrect Login Password During Data Restoration from a Local Backup File
- Automated Incremental Backup Failed Due to Full Storage
- RDS Point-in-Time Restoration Task Failure
- SQL Statements Such as SET @@SESSION.SQL_LOG_BIN Displayed After You Run mysqldump
- Insufficient Permissions During Data Export Using mysqldump
- Key Considered Invalid or Deleted During Table-Level PITR
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Primary/Standby Replication Issues
- How Primary/Standby Replication Works
- Automatic Recovery of Extended Primary/Standby Replication Delay
- Primary/Standby Replication Delay Scenarios and Solutions
- Abnormal Replication Between Primary and Standby RDS DB Instances
- Primary/Standby Replication Delay Increases Sharply and Then Decreases
- Insufficient Permissions Reported for Canal
- Canal Fails to Parse Binlogs
- RDS for MySQL Binlog Issues
- Parameter-related Issues
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Performance Issues
- High CPU Usage
- Out of Memory (OOM) Errors
- Insufficient Disk Bandwidth
- Slow SQL Statements Due to Improper Composite Index Settings
- DB Instance Becoming Read-Only Due to Insufficient Storage
- High Storage Usage Due to Uncleared Old Binlogs
- Slow Response Due to Deadlocks
- Read Replica Uses Far More Storage Than the Primary Instance
- CPU Usage Increase
- Slow SQL Execution Due to Hot and Cold Data Problems
- High Table Fragmentation Rate
- Full Storage Caused by Complex Queries
- Why Is My SQL Query So Slow?
- Instance Class Change or Minor Version Upgrade Failure Caused by Long Transactions
- Native Error 1461 Reported by an RDS for MySQL DB Instance
- System Inaccessible After Field Addition to an RDS for MySQL Database Table
- Storage Filled Up by Undo Logs Due to Long Transactions
- Locating Long Transactions
- Sharp Increase in the Commit Time of Some SQL Statements
- Oversized ibdata1
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SQL Issues
- Double Quotation Marks Cannot Be Identified During SQL Statement Execution
- Error 1366 Reported When Data Containing Emojis Is Updated
- Failed to Change the varchar Length Due to the Index Length Limit
- Invalid TIMESTAMP Default Value during Table Creation
- AUTO_INCREMENT Not Displayed in the Table Structure
- Slow Stored Procedure Execution Due to Inconsistent Collations
- ERROR [1412] Reported for a DB Instance
- Error Message "Too many keys specified" Displayed When a Secondary Index Is Created
- Failed to Delete a Table with a Foreign Key
- DISTINCT and GROUP BY Optimization
- Character Set and Collation Settings
- An Error Message Is Displayed When a User Is Created for a DB Instance
- Slow SQL Queries After a Large Amount of Data Is Deleted from a Large Table
- Event Scheduler Not Taking Effect Immediately After Being Enabled
- Equivalent Comparison Failures with Floating-Point Numbers
- A Large Number of SELECT Requests Routed to The Primary Instance After Database Proxy Is Enabled
- RENAME USER Execution Failure
- ERROR[1451] Reported When a Table with Foreign Keys Cannot Be Deleted
- Solution to the Failure of Converting the Field Type
- "Row size too large" Reported When an RDS for MySQL Table Failed to Be Created
- ERROR [1412] Reported by an RDS for MySQL DB Instance
- Instance Reboot Failure or ERROR 1146: Table 'xxx' doesn't exist Reported During Table Operations
- Error Reported During Pagination Query
- Error Reported During User Creation
- Syntax Error Reported When GRANT Is Used to Grant All Privileges
- Error Reported During Table Creation for an RDS for MySQL 5.6 DB Instance
- Inconsistent Data Obtained on the Primary and Standby Nodes When a Query Is Performed Using an Auto-Increment Primary Key Value
- "Data too long for column" Displayed When Data Is Inserted into an RDS for MySQL Instance
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Connection Issues
- "Access denied" Displayed During Database Connection
- Failed to Connect to a Database Using mariadb-connector in SSL Mode
- Error Message "connection established slowly"
- Login Failed After ssl_type of root Is Changed to ANY
- Error Reported During Login to a DB Instance Through DAS
- "Your password does not satisfy the current policy requirements" Displayed When Permissions Are Granted or Revoked on DAS
- SSL Connection Failed Due to Inconsistent TLS Versions
- Failed to Connect to a Database as root
- RDS for MySQL Client Automatically Disconnected from a DB Instance
- RDS for MySQL DB Instance Inaccessible
- Login Failed After the authentication_string Field Is Changed to Display the Password for RDS for MySQL
- MySQL-server Connection Failure After a Version Upgrade of RDS for MySQL
- Connection Exit Due to Improper Timeout Parameter Settings
- Database Connection Through Code (php/java/python) Failed After SSL Is Enabled
- There Is a Disconnection Every 45 Days Due to the istio-citadel Certificate System
- Error 1251 Reported During Login to a DB Instance on the Navicat Client After the Database Version Is Upgraded
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Other Issues
- No Scanned Rows Recorded in Slow Query Logs
- Rows Recorded in the SQL Diagnosis Result Far Less Than the Scanned Rows Recorded in Slow Query Logs
- Millisecond-Level SQL Statements Recorded in Slow Query Logs
- Viewing Storage of RDS DB Instances
- "The table is full" Displayed in Error Logs
- Audit Log Upload Policy Description
- Auto-increment Field Values
- Starting Value and Increment of AUTO_INCREMENT
- AUTO_INCREMENT Value Exceeding the Maximum Value of This Field plus 1
- Auto-Increment Field Value Jump
- Changing the AUTO_INCREMENT Value of a Table
- Failed to Insert Data Because Values for the Auto-increment Primary Key Field Reach the Upper Limit
- The Impact of Creating an Empty Username
- Connection to a Primary/Standby DB Instance Suspended Using pt-osc
- Error Reported During Payment for a DB Instance
- Failed to Change a Database Name
- Error Reported When a DB Instance Is Purchased
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Backup and Restoration Issues
- General Reference
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