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OCP试题解析之053-61 RMAN set command id to
61.You frequently have multiple RMAN sessions running, and you want to be able to easily identify each job via the CLIENTJNFO column of the dynamic performance view V$SESSION. What RMAN command can ...
分类:其他好文   时间:2014-08-29 20:08:08    阅读次数:261
datanode无法连接到master
初次在VM上配置Hadoop,开了三台虚拟机,一个作namenode,jobtracker另外两台机子作datanode,tasktracker配置好后,启动集群通过http://localhost:50700查看cluster状况Hadoop配置datanode无法连接到master发现没有dat...
分类:其他好文   时间:2014-08-29 15:54:18    阅读次数:201
Using Sahi(转)
Using Sahi -Before you start - PrerequisitesJava 1.5 or above is needed for running Sahi.Download SahiDownload Sahi V3 (2009-11-30) from SourceForgeIn...
分类:其他好文   时间:2014-08-29 10:56:37    阅读次数:325
Linux源码包的安装
实验03:源码包安装实验目标掌握gcc的安装熟练源码包的安装实验步骤安装gcc[root@localhostyum.repos.d]#yum-yinstallgcc*Loadedplugins:product-id,security,subscription-managerThissystemisnotregisteredtoRedHatSubscriptionManagement.Youcanusesubscription-managertore..
分类:系统相关   时间:2014-08-28 09:50:49    阅读次数:400
js判断所有异步ajax请求调用完毕
$(function() { $(document).ajaxStop(function() { $(this).unbind("ajaxStop"); //prevent running again when other calls finish LoadContact(); })...
分类:Web程序   时间:2014-08-27 20:26:08    阅读次数:261
UVA - 1435 Business Cards (数论)
Description Running a paper shop is not an easy job, especially with harsh customers. Today they brought their own rectangular sheets of paper, asking you to cut it into rectangular business cards ...
分类:其他好文   时间:2014-08-27 18:52:38    阅读次数:314
secondarynamenode异常
secondarynamenode异常2014-08-26 22:06:12,793 ERROR org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Exception in doCheckpointjava.io.IOExceptio...
分类:其他好文   时间:2014-08-26 22:53:46    阅读次数:378
Hadoop NameNode is not formatted.
2014-08-26 20:27:22,712 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Encountered exception loading fsimagejava.io.IOException: NameNode i...
分类:其他好文   时间:2014-08-26 21:20:47    阅读次数:877
卸载Exchange 2013 报错
环境描述:Exchange2013两前两后,由于和Exchange2010共存失败,需要处理Exchage2010问题,卸载Exchange2013。问题描述:在卸载Exchange2013其中一台前段服务器,出现如下问题:问题分析:卸载一台Exchange 2013CAS服务器时,得到了WMSVS服务,在此服务器上无法到达状态running..
分类:其他好文   时间:2014-08-26 02:58:26    阅读次数:545
Hadoop实战-中高级部分 之 Hadoop作业调优参数调整及原理
第一部分:core-site.xml?core-site.xml为Hadoop的核心属性文件,参数为Hadoop的核心功能,独立于HDFS与MapReduce。参数列表?fs.default.name?默认值 file:///?说明:设置Hadoop namenode的hostname及port,预...
分类:其他好文   时间:2014-08-23 15:13:50    阅读次数:217
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