摘要：1. Do you have virtual environment as lab？ Labs with free access of vm can be very convince 阅读全文

摘要：Recently, I installed a new RAC database on a local enviroment. The oracle version is 11.0.2.3. Operating system is OEL 6. When I install, I put all the database files into only one ASM disk group called data. The redundency level is normal which means only about 1/2 of the total space can be used. 阅读全文

摘要：LU CREATEThis step is to create a new boot enviroment. It contains the following steps.detach mirrormodified detached root mirror so it can be a boot device if error happensprepare exclusive listhousekeep var, determine zone infor, shutdown zone if you canlucreatedetach mirrorUse metastat -a , metas 阅读全文

摘要：Configuring Shared StorageConfiguring Files on an NAS Device for Use with Oracle ASMUsing ASMLib to Mark the Shared Disks as Candidate Disks 阅读全文

摘要：LINUX初学者经常分不清楚linux和X之间，X和Xfree86之间，X和KDE，GNOME等之间是什么关系。常常混淆概念，本文以比较易于理解的方式来解释X，X11，XFREE，WM，KDE，GNOME等之间的关系。一、linux本身没有图形界面，linux现在的图形界面的实现只是linux下的应用程序实现的。图形界面并不是linux的一部分，linux只是一个基于命令行的操作系统，linux和Xfree的关系就相当于当年的DOS和 WINDOWS3.0一样，windows3.0不是独立的操作系统，它只是DOS的扩充，是DOS下的应用程序级别的系统，不是独立的操作系统，同样 XFree只是l 阅读全文