@Dashrender said:
Why would the offline snapshot be different than an online?
Snapshots don't make open files be closed. Databases keep their files open and snapshots of any system like this are inconsistent, potentially, and unsafe. Only a database aware snapshot is useful for databases. And basically none are.
This is a higher level issue that is far worse when you use SAN level snapshots. They lack visibility not only to open files but to the quiescence state of the entire file system too.