"The database file is locked" error even when the file is newly created

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# chmod 777 db.sqlite 
# sqlite3 db.sqlite 
SQLite version 3.7.17 2013-05-20 00:56:22
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .databases 
Error: database is locked
sqlite>

I actually found that stack overflow q/a earlier. I’ve tried the move to a different file name and copy back to the old one method. Didn’t work.

I saw the link to this doc: File Locking And Concurrency In SQLite Version 3 and it makes me wonder if there’s a way to find out what kind of lock the database is under…