To resolve conflicting updates when using parallel processing, Replication Server must maintain transaction commit order and resolve commit consistency deadlocks.
Replication Server introduces a new method to maintain commit control using the function string rs_dsi_check_thread_lock. Replication Server uses rs_dsi_check_thread_lock to check whether the current DSI executor thread is blocking another replicate database process. This new method handles commit control within Replication Server thus requiring less network I/O than other methods, and may result in the rollback of only one transaction instead of many.
New database connection parameters used with internal commit control are:
dsi_commit_check_locks_intrvl
dsi_commit_check_locks_max
dsi_commit_control
