Now imagine if the database were smart enough to sense that a large percentage of sorts were spilling to disk and paged the DBA to inform them of the problem.
现在假设数据库足够聪明，可以感知到大量排序溢出到磁盘上，这时可以呼叫数据库管理员，把问题告诉他们。
But this means the database memory for database a must be paged out.
但是，这意味着数据库a的数据库内存必须调出。
If there are not sufficient free pages available in RAM or other pages which can be paged out by the OS to fit the database segment, a request to start a database will fail.
如果在RAM中没有足够的空闲页可用，或者没有足够的可以被OS为满足数据库段而调出的其他页，那么启动数据库的请求就会遭到失败。
The virtual portion is quite expandable by the database server and can be paged out to disk by the operating system.
虚拟区可以通过数据库服务器得到较大扩展，并且可以通过操作系统将虚拟区页移出(page out)磁盘。
The virtual portion is quite expandable by the database server and can be paged out to disk by the operating system.
虚拟区可以通过数据库服务器得到较大扩展，并且可以通过操作系统将虚拟区页移出(page out)磁盘。
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