发布时间：2014-08-15 18:08:58
with temp as( select 'China' nation ,'Guangzhou' city from dual union all select 'China' nation ,'Shanghai' city from dual union all select 'China' nation ,'Beijing' city from dual union all select 'USA' nation ,'New York' city fr.........【阅读全文】
发布时间：2014-07-17 11:36:40
堆大小设置JVM 中最大堆大小有三方面限制：相关操作系统的数据模型（32-bt还是64-bit）限制；系统的可用虚拟内存限制；系统的可用物理内存限制。32位系统下，一般限制在1.5G~2G；64为操作系统对内存无限制。我在Windows Server 2003 系统，3.5G物理内存，JDK5.0下测试，最大可设置为1478m。典型设置： .........【阅读全文】
发布时间：2014-07-17 11:35:09
Eclipse崩溃，错误提示：MyEclipse has detected that less than 5% of the 64MB of Perm Gen (Non-heap memory) space remains. It is strongly recommendedthat you exit and restart MyEclipse with new virtual machine memoryparamters to increase this memory. Failure to do so can .........【阅读全文】
发布时间：2013-12-26 11:04:28
隔行变色CSS代码：点击(此处)折叠或打开 body{ margin:0 auto; text-align:center} table{margin:0 auto; width:410px} table{ border:1px solid #000} .........【阅读全文】
发布时间：2013-12-10 11:42:18
Autotrace Setting ResultSET AUTOTRACE OFFNo AUTOTRACE report is generated. This is the default.SET AUTOTRACE ON EXPLAINThe AUTOTRACE report s.........【阅读全文】
