『Linux Capability』 For the purpose of performing permission checks, traditional UNIX implementations distinguish two categories of processes: privileged processes (whose effective user ID is 0, referred to as superuser or root), and unprivileged proc…
一 .oracle 有关 IO 信息的相关统计函数 Oracle i/o stack包含hbas,存储相关的交换机.存储物理磁盘.那么oracle建议在应用程序部署的时候,建议去验证i/o避免存在问题.但是之前有一个很刺手的问题,那就是如何去验证i/o侧吞吐量,换句话说怎么去验证i/o吞吐量更符合真实的生产环境. In Oracle Database 11g, the Real Application Testing feature (Capture/Replay) was introduced…