Oracle 参数 DATA_GUARD_MAX_IO_TIME 官方解释，作用，如何配置最优化建议
本站中文解释
DATA_GUARD_MAX_IO_TIME参数定义了在发出紧急暂停信号之前，延迟应用程序I/O操作将被暂停的时间，以秒为单位。
正确的设置DATA_GUARD_MAX_IO_TIME参数的方法是：
1.在当前的环境中，查看是否已经设置该参数。可以通过检查系统参数文件或执行以下查询来完成：
SELECT value AS “Data Guard Max I/O Time”
FROM v$parameter
WHERE name = ‘data_guard_max_io_time’;
2.如果未设置，则可以在参数文件中设置该参数。可以使用以下命令设置DATA_GUARD_MAX_IO_TIME参数：
ALTER SYSTEM SET Data_guard_max_io_time = 10 SCOPE = SPFILE;
3.如果要在其他实例中应用这个参数，则可以运行以下命令将这个参数更改：
ALTER SYSTEM SET Data_guard_max_io_time = 10 SCOPE=BOTH;
4.最后，重新启动实例，使新参数生效。
官方英文解释
DATA_GUARD_MAX_IO_TIME sets the maximum number of seconds that can elapse before a process is considered hung while performing a regular I/O operation in an Oracle Data Guard environment. Regular I/O operations include read, write, and status operations.
See Also:
“DATA_GUARD_MAX_LONGIO_TIME,” which enables you to set the timeout for long I/O operations, such as open and close operations, in an Oracle Data Guard environment
| Property | Description |
|---|---|
|
Parameter type |
Integer |
|
Default value |
|
|
Modifiable |
|
|
Modifiable in a PDB |
No |
|
Range of values |
|
|
Basic |
No |
|
Oracle RAC |
Different instances can use different values. |
