I think `sqlite3_shutdown()` might be needed in some programs (such as if you need to reconfigure SQLite, or if you need to continue running the program after you are finished with SQLite and want to deallocate some resources), although most programs probably do not need it. The other functions you mentioned I think are obsolete and do not do anything useful anyways (they might have been needed in very old versions; I don't know). If I am wrong about any of this, then hopefully someone else will write another message with the correct information.