We have an operational database with a 30 day window and a reporting database with a 120 day window. Keeping them in sync with replication works well except for when we need to purge records from the operational side. We do not want the purge deletes to replicate across to the reporting side. Our DBA is tell me that it is not possible to stop the purge deletes. I'm sure this is done at many other places. What options do we have for blocking the deletes from the reporting side?
Yes there is a way in Transactional Replication. You can go to publisher -> Article Properties and choose DONOT Replicate Delete statements for those tables. If purge is one time,huge and affects lots of table, I would recommend to take backup and disable replication purge data and reapply Replications with Full and Transaction log backup.