ARTATR1 servers are a specialized version of ARTATRN servers presenting only transactions with MAXACTIVE = 1, whereas ARTATRN servers present transactions with MAXACTIVE > 1.

It is critical, and verified by ATR1 servers at boot time, that MIN and MAX number of servers are set to 1. The goal of these servers is to guarantee the parallel processing of only one transaction in a group (with MAXACTIVE =1). To permit Tuxedo to start several servers offering the same transactions would be self-defeating for ATR1 Servers.

Since MIN and MAX are set to 1, the Tuxedo argument RQADDR, becomes unnecessary, and must be avoided for simplicity.

The rest of the configuration and behavior of ATR1 servers are exactly the same as ATRN servers.