DataSource Controls :: SSIS: RetainSameConnection And Variable Locking?
Jun 8, 2010
I am modifying a rather large ETL package using BIDS. It builds a datawarehouse, so there are many sources and a single destination. There are quite a few data flow tasks, and their connection strings are read into variables from an encrypted source. All the data flow tasks are arranged serially because of variable locking issues - occasionally two DFTs attempt to simultaneously lock the variable and it fails. I realize there are script solutions out there, but I am looking for perhaps a more elegant (easier) solution than to apply scripted solutions to tons of packages over something so trivial.
I came across the "RetainSameConnection" connection property, and I have a hunch this could be the solution. My reasoning is: If there's only one connection to a data source, there should only be one read operation from the variable. At least, it makes sense when SOURCING.As for destinations, I'm not sure if it's a good idea to have data from multiple sources flowing in through a single connection.This is my first week working in ETL so I don't know all the nuances of databases, ETLs, connections, etc.
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