Function Overview

Description

DBA Assistant provides visualized database O&M and intelligent diagnosis for developers and database administrators (DBAs), making database O&M easy and efficient. By analyzing alarms, resources, health data, performance metrics, and storage usage, it helps users quickly locate faults and keep track of instance status.

To use DBA Assistant on the RDS console, IAM users must have the RDS FullAccess, DAS FullAccess, DAS Administrator, and CES FullAccess permissions. For details, see Creating a User and Granting Permissions.

Scenarios

Setting a slow session threshold can help you quickly identify abnormal sessions and kill the sessions when an exception occurs in your instance, so that your instance can recover quickly and ensure database availability.
If your DB instance is unstable due to a large number of concurrent SQL requests from new services, you can set concurrency control rules for SQL statements to limit concurrent SQL statements and ensure instance stability.
If your instance storage is full, you can learn about the storage usage and disk space distribution on the Storage Analysis page. You can enable storage autoscaling. When the available storage of your instance drops to the threshold, autoscaling is triggered. For details, see Configuring Storage Autoscaling.
You can configure auto flow control to limit active connections in high burst traffic or abnormal read/write scenarios to ensure the availability of core workloads.

Supported Regions

DBA Assistant is available only in regions CN North-Beijing4, CN North-Ulanqab1, CN East-Shanghai1, CN South-Guangzhou, and CN Southwest-Guiyang1.

Functions

Table 1 lists the functions supported by DBA Assistant.

**Table 1** Function description
Function	Description	Reference
Dashboard	Shows the status of your instance, including alarms, resource usages, and key performance metrics. DBA Assistant diagnoses instance health using operational data analytics and intelligent algorithms, and provides you with solutions and suggestions for handling detected exceptions.	Viewing the Overall Status of a DB Instance
Sessions	The Sessions page displays slow sessions, active sessions, and total sessions. You can quickly filter slow sessions or active sessions by user, host IP address, or database name. Kill Session and Concurrency Control can be used for urgent instance recovery to ensure database availability.	Managing Real-Time Sessions
Performance	The Performance page displays key metrics of your instance and provides metric comparison between different days. You can keep track of metric changes and detect exceptions in a timely manner. Monitoring by Seconds helps accurately locate faults.	Viewing Performance Metrics of a DB Instance
Storage Analysis	Storage occupied by data and logs and historical changes of storage usage are important for database performance. The Storage Analysis page displays storage overview and disk space distribution of your instance. In addition, DBA Assistant can estimate the available days of your storage based on historical data and intelligent algorithms, so that you can scale up storage in a timely manner. Autoscaling, Abnormal Tables, Top 50 Databases, and Top 50 Tables are also available on this page.	Managing Disk Capacity
Locks & Transactions	The Locks & Transactions page displays metadata locks and InnoDB locks. You can manage blocked transactions, optimize your workloads, and reduce lock conflicts based on the lock information.	Managing Locks & Transactions
Slow Query Log	Displays slow queries within a specified time period. You can view top 5 slow query logs by user or IP address, sort statistics, and identify sources of slow SQL statements.	Viewing Slow Query Logs of a DB Instance
SQL Explorer	After Collect All SQL Statements is enabled, you can gain a comprehensive insight into SQL statements on the SQL Explorer page. Top SQL helps you locate exceptions.	Viewing Top SQL Statements of a DB Instance Creating a SQL Insights Task
Concurrency Control	Concurrency Control restricts the execution of SQL statements based on specified rules when there are SQL statements that cannot be optimized timely or a resource (for example, vCPU) bottleneck occurs.	Creating a Concurrency Control Rule
Auto Flow Control	Automatically detects database exceptions such as high vCPU usage and excessive active sessions, and limits traffic based on specified priorities. You can control traffic by database or user as required. Limiting traffic of non-core databases or from non-core users can ensure that core workloads remain stable.	Configuring Auto Flow Control
Daily Reports	The Daily Reports page provides overall information about your instance status of the previous day, including slow SQL analysis, all SQL analysis, and performance & storage analysis. You can download and subscribe to analysis reports. A daily diagnosis is recommended.	Daily Reports
Anomaly Snapshots	This function intelligently detects instance anomalies and records information about session, lock, and transaction snapshots to facilitate subsequent fault locating.	Managing Anomaly Snapshots