SQLITE_IOERR_SHMLOCK  680 ext/sqlite3/libsqlite/sqlite3.c #define SQLITE_IOERR_SHMLOCK           (SQLITE_IOERR | (20<<8))
SQLITE_IOERR_SHMLOCK  473 ext/sqlite3/libsqlite/sqlite3.h #define SQLITE_IOERR_SHMLOCK           (SQLITE_IOERR | (20<<8))