After studying the questions of data allocation and tile declustering in heterogeneous disk systems, a same-rate virtual disk dividing method and a virtual disksorting method are proposed.
For example, if there were an excessive amount of sorting such that the sort heap spilled to disk, performance would suffer.
比如说,如果出现大量排序操作,导致排序堆被溢出到磁盘上,那么性能就会受到影响。
3
Oracle automatically allocates this disk space called a temporary segment. Typically, Oracle requires a temporary segment as a database area for sorting.