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TransactionScope Defaults to Serializable

Published 2020-08-03 by Kevin Feasel

Josh Darnell reminds us to check constructor defaults:

Despite the fact that the SQL Server default isolation level is READ COMMITTED, the default isolation level when using TransactionScope is SERIALIZABLE.

This problem has been around a long time. David Browne (Microsoft) wrote about it in checks watch 2010!

Read the whole thing.

Published in Locks, Blocks, and Deadlocks, Misc Languages and Transactions