So after much research and muddling around I’ve found that the following works consistently for truncating *and* shrinking the transaction log file in SQL 2008:
Do a full backup and then a transaction log only back-up, then run this (where “MyDb” is the name of your DB and “MyDb_Log” is the name of your DB transaction log file):USE MyDb
GO
ALTER DATABASE MyDb SET RECOVERY SIMPLE
GO
ALTER DATABASE MyDb SET RECOVERY FULL
GO
DBCC SHRINKFILE(MyDb_log, 1)
GO
The DBCC SHRINKFILE should display results indicating a 1m log file at this point.
I know this seems a bit weird but I was just able to shrink the a transaction log from 1.6 gig (!) down to the default minimum size of 1 meg.
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