请问stata13在merge的时候出现内存不足的提醒，要怎么解决呢？报错如下：

op. sys. refuses to provide memory
    Stata's data-storage memory manager has already allocated 1478492172 bytes and it just attempted to
    allocate another 16m bytes.  The operating system said no.  Perhaps you are running another
    memory-consuming task and the command will work later when the task completes.  Perhaps you are on a
    multiuser system that is especially busy and the command will work later when activity quiets down.
    Perhaps a system administrator has put a limit on what you can allocate; see help memory.  Or perhaps
    that's all the memory your computer can allocate to Stata.



感谢各位大佬赐教啦