Which isolation level provides maximum concurrency?

Uncommitted read provides maximum concurrency.

In DB2, the isolation level that provides maximum concurrency is “Read Committed.” This isolation level allows multiple transactions to access and modify the data simultaneously, and it ensures that each transaction sees a snapshot of the database at the beginning of the transaction. While Read Committed provides high concurrency, it also ensures that transactions are isolated from each other to some extent, preventing dirty reads.

It’s important to note that the choice of isolation level depends on the specific requirements of your application and the trade-offs between concurrency and data consistency. Different isolation levels have different effects on the balance between these two factors.