原文链接：11gR2 dataguard 备库文件损坏处理一例
某客户的一套11gR2 dataguard环境出现异常，检查发现是备库出现文件损坏，且无法正常情况，已经超过1个多月没同步了。 我们先来看下备库的日志：
.......省略部分内容
See Note 411.1 at My Oracle Support for error and packaging details.
S...
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其他好文 时间：
2014-06-07 01:25:07
阅读次数：
217
【题目】
Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n).
For example,
S = "ADOBECODEBANC"
T = "ABC"
Minimum window is "BANC".
Note:
If there is no such window in S that covers ...
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其他好文 时间：
2014-06-05 11:14:26
阅读次数：
255
【题目】
Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n).
For example,
S = "ADOBECODEBANC"
T = "ABC"
Minimum window is "BANC".
Note:
If there is no such window in S that covers ...
Given an array S of n integers, are there elements
a, b, c, and d in S such that a +
b + c + d = target?
Find all unique quadruplets in the array which gives the sum of target.
Note:
...
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其他好文 时间：
2014-06-05 00:34:06
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240
最近在用QDeclarativeItem的继承来做Qt界面的控件，一开始发现怎么样也没法自动调用paint函数，后来查看了资料，发现如下字句：
You can subclass QDeclarativeItem to provide your own custom visual
item that inherits these features. Note that, because it ...
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其他好文 时间：
2014-06-04 23:47:17
阅读次数：
511
【题目】
Validate if a given string is numeric.
Some examples:
"0" => true
" 0.1 " => true
"abc" => false
"1 a" => false
"2e10" => true
Note: It is intended for the problem statement to be ambiguous. You should gather all requirements up front before imple...
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其他好文 时间：
2014-06-04 23:45:09
阅读次数：
388
最近遇到一个问题.就是
我在io线程里不断的把一个函数调用放到队列里
然后ruby线程就不断的从这个队列里取出函数之争并执行.
典型的 消费者模式.
我以前以为是这样...
这是work线程
pthread_mutex_lock(&mutex2)
while(( invoke = get_invoke() ) != NULL){
do_invoke(invo...
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其他好文 时间：
2014-06-04 22:35:56
阅读次数：
408
Optional: Get, Compile, Install QWT 5.0.0 (or
newer): * NOTE: You should not need to set the environment variables “QTDIR” or
“QWT_CFLAGS”, so leave t...
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系统相关 时间：
2014-05-31 20:53:04
阅读次数：
500
About Core ImageCore Image is an image
processing and analysis technology designed to provide near real-time processing
forstill and video images. It ...
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其他好文 时间：
2014-05-31 18:22:41
阅读次数：
289
DescriptionLet us consider sets of positive
integers less than or equal ton. Note that all elements of a set are different.
Also note that the order o...
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其他好文 时间：
2014-05-31 05:12:49
阅读次数：
246
