“Update-Database” command fails with TimeOut exception

Question

I\'m using EF migrations and have a table with a lot of data. I need to change MaxLength of a concrete column (it hadn\'t length constraints).

ALTER TABLE MyDb A         


        

Answer 1

I just had almost the exact same thing: timeout expired when trying to increase a column length. For me, using update-database had been working just fine an hour ago. The problem turned out to be an open transaction on the database and table I was trying to alter. Once I rolled back that transaction, the update-database command went through without problems.