Here is the scenario, our OLTP and DW servers are on SQL Server 2008 and we have log shipping from OLTP to DW servers. We bring dbs in standby mode on DW servers to perform ETL.We want to upgrade our DW servers to SQL 2014. We know that we won't be able to bring dbs in standby mode on new DW server (2014) while OLTP is still on 2008.So what alternate approaches we can take to provide warm copy of OLTP dbs (SQL Server 2008) on DW server (SQL Server 2014) to perform ETL?? Replication is not an option because there is too much data change on our OLTP servers and it generates a lot of traffic between OLTP and DW servers.
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