Any chance to read h2 database while NIS is runnning?
I downloaded h2 command line tools, succeded in obtaining a human readable backup of the database but NIS stopped working: the database file was corrupted so I had to delete it and resync NIS from scratch 
Doesn't h2 support any concurrency or I'm too stupid to use it?
When NIS is running the database is locked. We might switch strategy to avoid locking but right now you can't read the db when NIS is running.