RAC – Louis workspace

ASM memory fragment problem in 11gR2 RAC

Posted on June 7, 2013December 22, 2014 by admin

前天处理了一启RAC ASM 内存泄露问题，系统为公司最后一套RAC one node 版本为11.2.0.3

这套核心RAC one node系统出现大量 log file switch buffer busy waits等待,并伴随大量cursor: pin S wait on X re[……]

Solaris 10g CRS 自动reboot一例

Posted on October 18, 2012December 22, 2014 by admin

最近RAC 的case实在太多,越来越觉得公司逐渐去rac的正确。一套sunOS的系统在安装完crs 10g之后服务器不停的自动reboot,具体环境如下：

root@bmsa#showrev 
Hostname: bmsa
Hostid: 84f94303
Release: 5.1[......]Read more

11gR2 rac install ASM terminating the instance due to error 481

Posted on October 16, 2012December 22, 2014 by admin

一套新上线的RAC系统(redhat 5.8 RAC 11.2.0.3) 安装过程中跑GI root.sh时抛出error 481错误：

CRS-2672: Attempting to start 'ora.asm' on 'ptdb1'
CRS-50[......]Read more

CRS troubleshooting 两例

Posted on September 11, 2012December 22, 2014 by admin

一套10.2.0.5 RAC 系统 evmd cssd服务无法启动

CRS version

[oracle@ptdb02 oracle]$ crsctl query crs softwareversion
CRS software version on node [ptdb02] is[……]

11gR2 RAC listener

Posted on August 18, 2012December 22, 2014 by admin

oracle 11gR2 rac listener引入了3项主要的改变：

1. listener默认owner为grid

[oracle@db-42 ~]$ srvctl config listener
Name: LISTENER
Network: 1, Owner: grid[……]

11gR2 RAC Rebootless Node Fencing

Posted on March 6, 2012December 22, 2014 by admin

Rebootless Node Fencing

In versions before 11.2.0.2 Oracle Clusterware tried to prevent a split-brain with a fast reboot (better: reset) of the[……]

Recommendation for the Real Application Cluster Interconnect and Jumbo Frames

Posted on February 9, 2012December 22, 2014 by admin

Recommendation for the Real Application Cluster Interconnect and Jumbo Frames

Applies to:

Oracle Server – Enterprise Edition – Version: 9.2[……]

Configuring Temporary Tablespaces for RAC Databases for Optimal Performance

Posted on January 6, 2012December 22, 2014 by admin

Configuring Temporary Tablespaces for RAC Databases for Optimal Performance
Modified 04-AUG-2010 Type BULLETIN Status ARCHIVED
In this[……]

关于redhat 5.5安装10g Rac的问题总结

Posted on December 11, 2011December 22, 2014 by admin

环境：redhat 5.5+oracle 10g rac+netapp

首先碰到DMM问题，netapp存储通过DMM软件mapping过来的设备 oracle无法识别报如下错误：

the location /dev/mapper/ocr1 ,entered for the oracl[……]

[转] cluvfy使用说明

Posted on December 9, 2011December 22, 2014 by admin

在安装rac之前，可以通过Oracle提供的一个工具进行cluster环境验证，这个工具叫做cluvfy（Cluster Verification Utility)。

一、CVU程序的位置

OTN下载: http://otn.oracle.com/RAC

Oracle DVD[……]