SSIS Data Flow Task hangs on excecution of Pre-excecute phase

Question

I have a Data Flow Task that is hanging on excecution.
The flow is simple, makes two queries to different tables (Both with a couple of joins), then sorts and merges th

Answer 1

This problem is still active with SQL Server 2012/2014.

None of the solutions mentioned above helped. In fact, nothing changed delaying validation, changing the configuration of the OLD DB Destination or OLE DB Connection.

Reading the thread from this link: https://social.msdn.microsoft.com/Forums/sqlserver/en-US/35a484c7-4850-4f86-b14a-5dfb50491ab2/long-duration-preexecute-phase?forum=sqlintegrationservices

it is suggested that the problem is with the execution plan.

This was true for my case and adding a condition 1=1 to my OLE DB Source configuration forced SQL server to generate a new execution plan that fixed the issue for me.