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创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...图的操作过程。
首先，介绍环境。
数据库A和数据库B的版本为Oracle 10.2.0.4 for linux x86 64bit。
在数据库A上同步的表的结构如下：
create table T_MV_TEST
(
A DATE,
B DATE,
C DATE
);
alter table T_MV_TEST
add constraint PK_T_MV_TEST primary...
MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...
...的步骤。
故障
问题：主从复制不止何故停止了，我该怎么办？
答案：复制错误多半是因为日志错误引起的，所以首先要搞清楚是主日志错误还是中继日志错误，从错误信息里一般就能判断，如果不能可以使用类似下面的mysqlb...
服务器保持大量TIME_WAIT和CLOSE_WAIT的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...内核参数优化的话）上经常会遇到这个问题，这个问题是怎么产生的呢？
从 上面的示意图可以看得出来，TIME_WAIT是主动关闭连接的一方保持的状态，对于爬虫服务器来说他本身就是“客户端”，在完成一个爬取任务之后，他就...
How do I programmatically force an onchange event on an input?
...
This is a true answer for this question. We must achieve this in a modern way.
– Константин Ван
Nov 19 '16 at 9:46
...
When to use the JavaScript MIME type application/javascript instead of text/javascript?
Based on the question jQuery code not working in IE , text/javascript is used in HTML documents so Internet Explorer can understand it.
...
Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的代码加入到Nginx的配置文件nginx.conf，并重启Nginx，然后浏览，就能看到效果了。
location /lua {
set $test "hello, world.";
content_by_lua '
ngx.header.content_type = "text/plain";
ngx.say(ngx.var.test);
';
}
在深入学习ngx_lua之...
Set width of a “Position: fixed” div relative to parent div
...t "stuck"
Both the parent and child will adhere to the width:100% if the viewport is less than the maximum width. Likewise, both will adhere to the max-width:800px when the viewport is wider.
It works with my already responsive theme in a way that I can alter the parent container without having to...
Serving favicon.ico in ASP.NET MVC
...
Placing favicon.ico in the root of your domain only really affects IE5, IIRC. For more modern browsers you should be able to include a link tag to point to another directory:
<link rel="SHORTCUT ICON" href="http://www.mydomain.com/content/favicon.ico"/>
You can also use non-ico file...
Alternate table row color using CSS?
...r:nth-child(even) {
background-color: #000000;
}
Note: No support in IE 8.
Or, if you have jQuery:
$(document).ready(function()
{
$("tr:even").css("background-color", "#000000");
});
share
|
...
How to check if element has any children in Javascript?
... opposed to text nodes, attribute nodes, etc.) on all modern browsers (and IE8 — in fact, even IE6) you can do this: (thank you Florian!)
if (element.children.length > 0) { // Or just `if (element.children.length)`
// It has at least one element as a child
}
That relies on the children ...