Parallel DSI Support in a Heterogeneous Environment

You can configure Replication Server to apply transactions to the replicate data server in a heterogeneous environment using parallel Data Server Interface (DSI) threads. Applying transactions in parallel increases the speed of replication, yet maintains the serial order of the transactions as they are applied at the primary site.

• New Serialization Method
  wait_after_commit is a transaction serialization method that improves performance and data integrity with parallel DSI for heterogeneous replication.
• New and Updated Configuration Parameters
  Replication Server 15.5 introduces dsi_max_cmds_in_batch, and updates dsi_max_xacts_in_group and dsi_serialization_method to support parallel Data Server Interface (DSI) processing.
• Function-String Changes for Internal Commit Control for Adaptive Server
  Replication Server uses the rs_dsi_check_thread_lock function to check whether the current DSI executor thread is blocking another replicate database process. In Replication Server 15.5, the rs_dsi_check_thread_lock function string has been modified to detect deadlocks.