Why Does the Transaction Log Keep Growing or Run Out of Space?

This one seems to be a common question in most forums and all over the web, it is asked here in many formats that typically sound like this: > In SQL Server - > > > > - What are some reasons the transaction log grows so large? > - Why is my log file so big? > - What are some ways to prevent this problem from occurring? > - What do I do when I get myself on track with the underlying cause and want to put > my transaction log file to a healthy size?