Editions

Database audit provides professional and advanced editions for you to choose from.

Table 1 describes the database audit editions.

**Table 1** Database audit editions
Edition	Maximum Databases	System Resource	Performance
Professional	6	CPU: 8 vCPUs Memory: 32 GB Hard disk: 1,084 GB	Peak QPS: 6,000 queries/second Database load rate: 7.2 million statements/hour Stores 600 million online SQL statements. Stores 10 billion archived SQL statements.
Advanced	30	CPU: 16 vCPUs Memory: 64 GB Hard disk: 2,108 GB	Peak QPS: 30,000 queries/second Database load rate: 10.8 million records/hour Stores 1.5 billion online SQL statements. Stores 60 billion archived SQL statements.

A database instance is uniquely defined by its database IP address and port.
The number of database instances equals the number of database ports. If a database IP address has N database ports, there are N database instances.

Example: A user has two database IP addresses, IP₁ and IP₂. IP₁ has a database port. IP₂ has three database ports. IP₁ and IP₂ have four database instances in total. To audit all of them, select professional edition DBSS, which supports a maximum of six database instances.
To change the edition of a DBSS instance, unsubscribe from it and purchase a new one.
The cloud native edition can be purchased only on the RDS console.
The table above lists the system resources consumed by a database audit instance. Ensure your system has the required configurations before purchasing database audit instances.
Online SQL statements are counted based on the assumption that the capacity of an SQL statement is 1 KB.