SIZE_LIMIT
The SQLITE_FCNTL_SIZE_LIMIT opcode is used by in-memory VFS that implements sqlite3_deserialize() to set an upper bound on the size of the in-memory database. The argument is a pointer to a sqlite3_int64. If the integer pointed to is negative, then it is filled in with the current limit. Otherwise the limit is set to the larger of the value of the integer pointed to and the current database size. The integer pointed to is set to the new limit.