NLS_SORT
Parameter type | String |
Syntax | NLS_SORT = {BINARY | linguistic_definition} |
Default value | Derived from NLS_LANGUAGE |
Parameter class | Dynamic: ALTER SESSION |
Range of values | BINARY or any valid linguistic definition name |
NLS_SORT specifies the collating sequence for ORDER BY queries.
- If the value is BINARY, then the collating sequence for ORDER BY queries is based on the numeric value of characters (a binary sort that requires less system overhead).
- If the value is a named linguistic sort, sorting is based on the order of the defined linguistic sort. Most (but not all) languages supported by the NLS_LANGUAGE parameter also support a linguistic sort with the same name.
Note:Setting NLS_SORT to anything other than BINARY causes a sort to use a full table scan, regardless of the path chosen by the optimizer. BINARY is the exception because indexes are built according to a binary order of keys. Thus the optimizer can use an index to satisfy the ORDER BY clause when NLS_SORT is set to BINARY. If NLS_SORT is set to any linguistic sort, the optimizer must include a full table scan and a full sort in the execution plan.
昨天同事用了我的机子，今天不知道怎么了，控制面板里打开服务后，想启动我的数据库服务，但是出错了：
“无法从本地计算机启动OracleServiceTEST000R服务
错误号：5，拒绝访问。”
我试了其他ORACLE服务，不论是要启动还是要停止，均是同样的错误。
是不是系统问题呀。
请各位支着，在下感激不禁。
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