- 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
-
FAQs
-
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?
-
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?
-
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
-
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
Copied.
Overview
Function Overview
In a GeminiDB Cassandra instance, a keyspace is an object used to store columns and user-defined objects. A keyspace is equivalent to a database. Creating a key space is to create a database.
You can go to the Keyspace Management page in either of the following ways:
- In the keyspace list of the Home page, locate the keyspace you want and click Manage in the Operation column.
- Choose Keyspace Management on the top menu bar.
![](https://support.huaweicloud.com/intl/en-us/usermanual-das/en-us_image_0000001694534053.png)
No. |
Description |
---|---|
1 |
Displays the name of the keyspace opened on the current page. You can change the keyspace to a non-system keyspace in the current DB instance. |
2 |
Displays the IP address and port number of the current DB instance. |
3 |
Allows you to open a SQL window for operating the current keyspace. |
4 |
Periodically collects data and stores it to databases of DAS. Advantages:
Only structural metadata is collected, which means that user's table data is not included. |
5 |
Consists of object list and metadata collection functional modules. |
6 |
Allows you to perform operations. |
Object List
If there are too many tables in an instance, the system will neither collect metadata nor reload tables to minimize impacts on database performance.
You can manage instance tables, views, and custom types, and perform operations including opening and viewing objects.
Metadata Collection
DAS periodically collects DB instance metadata and stores the collected data in the DAS database. In addition, it collects only structural metadata, but not data in user tables, which ensures data security. Metadata collection delivers the following advantages:
- Reduces queries on user keyspaces and impacts on the performance of user databases.
- Improves search performance for DB instances that contain a large number of tables and supports pagination queries.
To ensure stable performance, DAS will temporarily stop collecting data when the instance QPS is over 10,000 or TPS is over 1,000.
- On the Keyspace Management page, click the Metadata Collection tab.
- On the displayed page, click Collect Now to start the collection.
You can also stop the collection or view collection details.
- Clear Collected Data: Clears the collected data such as metadata, keyspace structures, and table structures.
- Delete Logs: Deletes logs. Deleted logs cannot be recovered. Exercise caution when performing this operation.
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbot