Data Admin Service
Data Admin Service
- What's New
- Function Overview
- Service Overview
- Billing
- Getting Started
-
User Guide
- Permissions Management
- Logging in to a DB Instance
-
MySQL
- Account Management
- Database Management
- SQL Operations
- Table Management
- View Management
- Stored Procedure Management
- Event Management
- Trigger Management
- Function Management
- Data Import and Export
- Data Generator (Not Promoted)
- Tracking and Rolling Back Data (Not Promoted)
- Task Management
- Table Structure Comparison and Synchronization (Not Promoted)
- Intelligent O&M (New Version)
- Intelligent O&M (Old Version)
- RDS for SQL Server
- PostgreSQL
-
RDS for MariaDB
- Account Management
- Database Management
- SQL Operations
- Table Management
- View Management
- Stored Procedure Management
- Event Management
- Trigger Management
- Function Management
- Data Import and Export
- Data Generator (Not Promoted)
- Task Management
- Table Structure Comparison and Synchronization (Not Promoted)
- Intelligent O&M
- GaussDB
-
TaurusDB
- Account Management
- Database Management
- SQL Operations
- Table Management
- View Management
- Event Management
- Stored Procedure Management
- Function Management
- Trigger Management
- Data Import and Export
- Data Generator (Not Promoted)
- Task Management
- Table Structure Comparison and Synchronization (Not Promoted)
- Intelligent O&M
- GeminiDB Cassandra
- GaussDB(DWS) (Unavailable Soon)
- DDS
- DDM
- Audit
- Event Monitoring
- Best Practices
-
API Reference
- Before You Start
- API Overview
- Calling APIs
-
APIs (in OBT)
- API Version Queries
-
Cloud DBA
- Registering a Database User
- Modifying a Database User
- Deleting a Database User
- Querying Intelligent O&M Quotas
- Querying Database User Information
- Querying Database Users
- Killing Sessions
- Querying the SQL Execution Plan (GET Request)
- Querying the SQL Execution Plan (POST Request)
- Querying Metadata Locks
- Querying Instance Sessions
- Querying InnoDB Lock Waits
- Enabling or Disabling SQL Explorer and Slow Query Log
- Querying Whether SQL Explorer and Slow Query Log Are Enabled
- Exporting Slow Query Logs
- Exporting SQL Explorer Data
- Querying Whether SQL Statement Concurrency Control Is Enabled
- Enabling or Disabling SQL Statement Concurrency Control
- Querying Concurrency Control Rules of SQL Statements
- Generate Keywords of a Concurrency Control Rule from the Original SQL Statement
- Creating a Concurrency Control Rule for SQL Statements
- Deleting a Concurrency Control Rule of SQL Statements
- Querying SQL Statement Concurrency Control Tasks
- Exporting the Top SQL Template List
- Exporting SQL Execution Time Distribution
- Exporting the Slow SQL Template List
- Viewing the Instance List on the Intelligent O&M Page
- Setting a Shared Link
- Deleting a Shared Link
- Executing a SQL Diagnosis
- Obtaining Diagnosis Results
- Creating an Instance Diagnosis Task
- Querying Instance Diagnosis Reports
- Obtaining an Instance Diagnosis Report
- Synchronizing the Instance List
- Deprecated APIs
- Permissions Policies and Supported Actions
- Appendixes
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FAQs
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Product Consulting
- How Is DAS Billed?
- Which Data Sources Does DAS Support?
- Does DAS Support Multi-Region Access?
- Where Is SQL Execution Records Saved If I Enable This Function?
- What Should I Enter in the Database Column to Log In to a PostgreSQL DB Instance on the DAS Console?
- Will I Be Changed If I Enable Collect Metadata Periodically and Show Executed SQL Statements on the Add Login Page?
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Managing connections
- What Should I Do If I Can't Connect to My DB Instance Due to Insufficient Permissions?
- What Should I Do If I Can't Connect to My RDS for MySQL Instance?
- What Should I Do If I Can't Connect to My ECS (MySQL) Instance?
- What Should I Do If I Can't Connect to My RDS for SQL Server Instance?
- What Should I Do If I Can't Connect to My ECS (Microsoft SQL Server) Instance?
- What Should I Do If I Can't Connect to My RDS for PostgreSQL Instance?
- What Should I Do If I Can't Connect to My ECS (PostgreSQL) Instance?
- What Should I Do If I Can't Connect to My DDS Instance?
- What Should I Do If I Can't Connect to My GaussDB(for MySQL) Instance?
- What Should I Do If I Can't Connect to My GaussDB Instance?
- What Should I Do If I Can't Connect to My DDM Instance?
- How Do I View and Modify ECS Security Group Rules?
- How Do I View and Modify Firewall Rules?
- What Should I Do If My Connection Fails?
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Usage
- What Can I Do If Garbled Characters Are Displayed in the Exported Database Result Set?
- What Are the Precautions for Connecting DAS to a Third-Party Client?
- What Are the Username and Password for DAS?
- What Should I Do If Table Obtaining Times Out?
- How Do I Modify the Collation?
- When a user creates a data tracking task, an error message indicating that the current user does not have the OBS operator permissions is displayed.
- Resource Freezing, Release, Deletion, and Unsubscription
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Product Consulting
- Glossary
- Videos
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Service Overview
- Getting Started
-
User Guide
- Permissions Management
- Logging In to the DAS Console
- Adding Login Information
- Modifying Login Information
- Deleting Login Information
- Logging In to Databases Shared by Others
- MySQL DB Instance Management (Development Tool)
- Microsoft SQL Server DB Instance Management (Development Tool)
- PostgreSQL DB Instance Management (Development Tool)
- DDS DB Instance Management (Development Tool)
- Enterprise Change Approval
- Intelligent O&M
- FAQs
- Change History
-
User Guide (Kuala Lumpur Region)
- Service Overview
- Getting Started
-
User Guide
- Permissions Management
- Logging in to a DB Instance
-
MySQL
- Account Management
- Database Management
- SQL Operations
- Table Management
- View Management
- Stored Procedure Management
- Event Management
- Trigger Management
- Function Management
- Data Import and Export
- Data Generator (Not Promoted)
- Tracking and Rolling Back Data (Not Promoted)
- Task Management
- Table Structure Comparison and Synchronization (Not Promoted)
- Intelligent O&M (New Version)
- Intelligent O&M
- RDS for SQL Server
- PostgreSQL
- DDS
- DDM
- Audit
-
FAQs
-
Managing connections
- What Should I Do If I Can't Connect to My RDS for MySQL Instance?
- What Should I Do If I Can't Connect to My ECS (MySQL) Instance?
- What Should I Do If I Can't Connect to My RDS for PostgreSQL Instance?
- What Should I Do If I Can't Connect to My ECS (PostgreSQL) Instance?
- What Should I Do If I Can't Connect to My DDS Instance?
- What Can I Do If a GaussDB(for MySQL) Instance Fails to Be Connected?
- What Should I Do If I Can't Connect to My GaussDB Instance?
- What Should I Do If I Can't Connect to My DDM Instance?
- How Do I View and Modify ECS Security Group Rules?
- How Do I View and Modify Firewall Rules?
- What Should I Do If My Connection Fails?
- Usage
-
Managing connections
- Change History
-
User Guide (ME-Abu Dhabi Region)
- General Reference
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SQL Diagnosis
This function enables you to diagnose SQL statements and obtain optimization suggestions.
Diagnosing a large number of SQL statements will affect performance of your instance, so you are advised to use this function on an idle instance.
Usage Notes
- This function is available only to MySQL InnoDB.
- Only SELECT, INSERT, UPDATE, and DELETE statements can be diagnosed. An INSERT statement must contain a SELECT clause.
- Currently, SQL statements of databases information_schema, test, and mysql cannot be queried.
- SQL statements that contain views cannot be diagnosed.
- SQL Diagnosis obtains table structures and data distribution information (non-original). The obtained data is only for logic diagnosis, but not stored on the DAS server.
- Obtaining table structures and data distribution information may cause additional load to your instance, but has little impact on its performance.
- SQL diagnosis history is stored on the DAS server only. If you delete SQL diagnosis history on the console, it will be also deleted from the DAS server.
- SQL formatting improves readability of SQL statements. Formatting SQL statements enables statements to be displayed in line break mode, but does not change their logic and semantics.
- SQL formatting takes effect for all the SQL statements in the SQL window. You cannot format only one selected statement.
Procedure
- Log in to the Huawei Cloud console.
- Click
in the upper left corner and select a region and project.
- Click
in the upper left corner, and under Databases, click Data Admin Service.
- In the navigation pane, choose Intelligent O&M > Instance List.
Alternatively, on the Overview page, click Go to Intelligent O&M.
- In the upper right corner of the Instance List page, search for instances by engine type, instance name, or instance IP.
Figure 1 Searching for instances
- Locate the target instance and click Details.
- In the upper right corner of the page, click Go to Old Edition.
- Choose SQL > SQL Diagnosis. On the displayed dialog box, perform the following operations:
- On the SQL Diagnosis tab page, select the database where you want to diagnose a SQL statement, enter a SQL statement, and click Diagnose. The diagnosis result page is displayed.
- Select a database where you want to execute a SQL statement, enter a SQL statement, and click Execute. The system executes the statement and displays a result set.
- Select the target database, enter SQL statements, and click Format. The system formats all the SQL statements.
- Select the database where you want to view the SQL execution plan, enter SQL statements, and click View Execution Plan. The system executes all the SQL statements in sequence.
Parent topic: SQL
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