What's the best practice to ensure atomic read of a database table using JDBC?

Question

I have an java application reading from a database table for jobs to process, and I may have multiple instances of this application running on different servers as each job is i

Answer 1

Use ResultSet that has CONCUR_READ_ONLY and TYPE_FORWARD_ONLY. If your database jdbc driver supports it, it will only return atomic read of your select time.

According to this documentation, (Table Summary of Visibility of Internal and External Changes)

forward-only cursor will only show your read time results. CONCUR_READ_ONLY will prevent your internal updates.