Oracle 参数 NLS_CALENDAR 官方解释，作用，如何配置最优化建议
本站中文解释
:
NLS_CALENDAR参数用于指定当前会话中用于给定日期、时间格式和操作的日历，其取
官方英文解释
NLS_CALENDAR specifies which calendar system Oracle uses.
| Property | Description |
|---|---|
|
Parameter type |
String |
|
Syntax |
|
|
Default value |
None, implies |
|
Modifiable |
|
|
Modifiable in a PDB |
Yes |
|
Range of values |
Any valid calendar format name |
|
Basic |
No |
NLS_CALENDAR can have one of the following values:
-
Arabic Hijrah
-
English Hijrah
-
Gregorian
-
Japanese Imperial
-
Persian
-
ROC Official (Republic of China)
-
Thai Buddha
For example, suppose NLS_CALENDAR is set to “Japanese Imperial”, the date format is “E YY-MM-DD”. (“E” is the date format element for the abbreviated era name.) If the date is May 15, 1997, then the SYSDATE is displayed as follows:
SELECT SYSDATE FROM DUAL; SYSDATE -------- H 09-05-15
Note:
The value of the initialization parameter NLS_CALENDER is used to initialize the session value of this parameter, which is the actual value referenced by the SQL query processing. If the initialization parameter is not specified, the initial session value becomes GREGORIAN. This initial value is overridden by a client-side value if the client is OCI-based and the NLS_LANG client setting (environment variable) is defined.
See Also:
Oracle Database
Globalization Support Guide for a listing of available calendar systems
