概述
LOG_ARCHIVE_DEST_STATE_n
用于指定对应的归档目录的可用状态。
RESET状态和DEFER状态功能相同。
解释:
日志传送服务将不传送redo 数据到LOG_ARCHIVE_DEST_n指定的位置,指示这个位置是有效的,但不使用它。RESET同时清除此位置有关的任何先前传输过程的error message。
Parameter type
String
Syntax
LOG_ARCHIVE_DEST_STATE_n = {alternate | reset | defer | enable}
Default value
enable
Parameter class
Dynamic: ALTER SESSION, ALTER SYSTEM
The LOG_ARCHIVE_DEST_STATE_n parameters (wheren = 1, 2, 3, ... 10) specify the availability state of the corresponding destination. The parameter suffix (1 through 10) specifies one of the ten corresponding LOG_ARCHIVE_DEST_n destination parameters.
LOG_ARCHIVE_DEST_STATE_n Initialization Parameter Attributes
Attribute Description
ENABLE
Log transport services can transmit redo data to this destination. ENABLE is the default.
DEFER
Log transport services will not transmit redo data to this destination. This is a valid but unused destination.
ALTERNATE
This destination is not enabled, but it will become enabled if communication to its associated destination fails.
RESET
Functions the same as DEFER, but clears any error messages for the destination if it had previously failed.
Example 5-1 provides an example of one destination with the LOCATION attribute.
Example 5-1 Specifying a Local Archiving Destination
LOG_ARCHIVE_DEST_1='LOCATION=/arch1/chicago/'
LOG_ARCHIVE_DEST_STATE_1=ENABLE
转自:http://www.itpub.net/thread-733766-1-1.html
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