calculate two oracle systimestamp delta
Responding to Network Traffic After they identify potentially malicious activity or security policy violations, your IPS sensors perform specific configured actions. These actions are usually configured on a per signature basis and fall into the following categories: Alerting actions Logging actions Blocking actions Dropping actions Alerting Actions Alerts or alarms indicate that your IPS s...
by shinelian - 网络技术文档中心 - 2006-10-21 11:54:53 阅读（535） 回复（0）
(1) Given that there are 5 nodes in a LAN and a connection between each pair of nodes is\r\n$10. Based solely on the price of connections, how much would a full mesh topology\r\ncost? \r\n\r\n(2) Given that there are 5 nodes in a LAN and a connection between each pair of nodes is\r\n$10, how much would a ring topology cost? \r\n\r\n(3) State a topology that would be cheaper than the ring topology....
在solaris 系统中有一个uptime 命令，可以查看cpu 的平均负荷。如下： # uptime 4:23pm up 119 day(s), 22:05, 2 users, load average: 0.07, 0.06, 0.05 其中的0.07，0.06，0.05分别是5，10，15分钟的统计平均值。 我们先来看看源代码中，统计平均值得到的函数调用关系图： 图中的clock函数会每秒被调用一次，clock执行的操作如下： 1.首先调用loadavg_update函数从cpu_t::cpu_acct[]中读出当前采样的cpu值。这个值存储...
比如我创建一个名字叫MYTEST_SCHEDULE的调度,每天4:00执行. Begindbms_scheduler.create_schedule( repeat_interval => 'FREQ=DAILY;BYHOUR=4;BYMINUTE=0;BYSECOND=0', start_date => systimestamp at time zone 'PRC', comments => '---this is my test schedule---', schedule_name => 'MYTEST_SCHEDULE'); end;
