SQLITE_IOERR_SHMOPEN  678 ext/sqlite3/libsqlite/sqlite3.c #define SQLITE_IOERR_SHMOPEN           (SQLITE_IOERR | (18<<8))
SQLITE_IOERR_SHMOPEN  471 ext/sqlite3/libsqlite/sqlite3.h #define SQLITE_IOERR_SHMOPEN           (SQLITE_IOERR | (18<<8))