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SQLite error 'attempt to write a readonly database' during insert?

I have a SQLite database that I am using for a website. The problem is that when I try to INSERT INTO it, I get a PDOException

SQLSTATE[HY000]: General error: 8 attempt to write a readonly database

I SSH'd into the server and checked permissions, and the database has the permissions

-rw-rw-r--

I'm not that familiar with *nix permissions, but I'm pretty sure this means

  • Not a directory
  • Owner has read/write permissions (that's me, according to ls -l)
  • Group has read/write permissions
  • Everyone else only has read permissions

I also looked everywhere I knew to using the sqlite3 program, and found nothing relevant.

Because I didn't know with what permissions PDO is trying to open the database, I did

chmod o+w supplies.db

Now, I get another PDOException:

SQLSTATE[HY000]: General error: 14 unable to open database file

But it ONLY occurs when I try to execute an INSERT query after the database is open.

Any ideas on what is going on?

Solution

  • The problem, as it turns out, is that the PDO SQLite driver requires that if you are going to do a write operation (INSERT,UPDATE,DELETE,DROP, etc), then the folder the database resides in must have write permissions, as well as the actual database file.

    I found this information in a comment at the very bottom of the PDO SQLite driver manual page.