ALERT: Disable Transparent HugePages on SLES11, RHEL6, OEL6 and UEK2 Kernels (Doc ID 1557478.1) Modified: Jun 8, 2013 Type: ALERT Status: PUBLISHED Priority: 3 APPLIES TO: Oracle Database - Enterprise Edition Linux x86 Linux x86-64 DESCRIPTION Starti…

Introduction Configuring HugePages Force Oracle to use HugePages (USE_LARGE_PAGES) Disabling Transparent HugePages (RHEL6/OL6) Configuring 1G Hugepagesize Introduction For large SGA sizes, HugePages can give substantial benefits in virtual memory man…

近期遇到个LINUX系统内存比較大.未开 HugePages,业务有变化导致ORACLE连接数剧增至上千个,PageTables达到上百G.导致内存不足系统HANG住的案例. 因此须要开启 HugePages,操作系统是OEL6以上的.LINUX的下面版本号:Red Hat Enterprise Linux 6, SUSE Linux Enterprise Server 11, and Oracle Linux 6 with earlier releases of Oracle Linux Un…

最近遇到个LINUX系统内存比较大,未开 HugePages,业务有变化导致ORACLE连接数剧增至上千个,PageTables达到上百G,导致内存不足系统HANG住的案例. 因此需要开启 HugePages,操作系统是OEL6以上的.LINUX的以下版本:Red Hat Enterprise Linux 6, SUSE Linux Enterprise Server 11, and Oracle Linux 6 with earlier releases of Oracle Linux Unb…

适用于: Oracle Database - Enterprise Edition - 版本 10.1.0.2 到 11.2.0.3 [发行版 10.1 到 11.2]本文档所含信息适用于所有平台 用途 本文章简要概述了导致节点重新启动或者 CRS 意外重启的几个最常见问题 适用范围 有节点重新启动问题的所有用户 详细信息 问题 1:节点重新启动,但是日志文件未显示任何错误或原因. 原因: 如果节点重新启动是由于某个 Oracle 进程,但是日志文件没有显示任何错误,则故障位置为 oprocd.…

1 Transparent Huge Pages 说明 官网上有2篇文章对THP 做了说明: https://access.redhat.com/solutions/46111 https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Performance_Tuning_Guide/s-memory-transhuge.html Starting with RedHat6, RedHat7, OL…

透明大页介绍 Transparent Huge Pages的一些官方介绍资料: Transparent Huge Pages (THP) are enabled by default in RHEL 6 for all applications. The kernel attempts to allocate hugepages whenever possible and any Linux process will receive 2MB pages if the mmap region is…

透明大页介绍 Transparent Huge Pages的一些官方介绍资料: Transparent Huge Pages (THP) are enabled by default in RHEL 6 for all applications. The kernel attempts to allocate hugepages whenever possible and any Linux process will receive 2MB pages if the mmap region is…

方法一: 1.设置/etc/grub.conf文件,添加 transparent_hugepage=never ,在系统启动是禁用 [root@hbdw1 ~]# cat /etc/grub.conf # grub.conf generated by anaconda## Note that you do not have to rerun grub after making changes to this file# NOTICE: You have a /boot partition. Th…

Checking the Hardware Requirements 系统必须满足下面最小的硬件要求 Memory Requirements Minimum: 1 GB of RAMRecommended: 2 GB of RAM or more To determine the RAM size, enter the following command: # grep MemTotal /proc/meminfo The following table describes the relati…