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Enabling Access to the Real Time Clock倒底要不要reboot server

Enabling Access to the Real Time Clock倒底要不要reboot server

To enable this feature:



Log in as root.



Enter the following commands:



# mknod /dev/timedev c 15 0

# chmod +r /dev/timedev

請問做完這個動作之後是否一定要reboot server



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Enabling Access to the Real Time Clock倒底要不要reboot server

Hi Joey,



> # mknod /dev/timedev c 15 0

> # chmod +r /dev/timedev

> 請問做完這個動作之後是否一定要reboot server



It just needs to restart the DB instances.



Attach the related information for reference:

Enabling Access to the Real Time Clock

Many Oracle processes are timed, especially if the

TIMED_STATISTICS initialization parameter is set to TRUE. These timing functions call the Tru64 kernel and can affect Oracle9i performance. On Tru64, you can improve performance on heavily loaded systems by enabling processes to directly access the real time clock.



To enable access to the real time clock:



1) Log in as root.



2) Enter the following commands:



# mknod /dev/timedev c 15 0

# chmod +r /dev/timedev



If your system is a cluster running Tru64 UNIX V5.1 or higher, enter these commands on each cluster. If your system is a cluster running an earlier version of Tru64, enter the commands on each node.





Note:



The special file /dev/timedev remains on the system after rebooting.





3) Restart the Oracle9i instance.



The system checks for the existence of the /dev/timedev file only on instance startup.



Oracle Corporation recommends that you enable this feature on all instances in a cluster, and therefore on all nodes.



Best regards,

Richard.