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ASM memory fragment problem in 11gR2 RAC

June 7, 2013 oracle, RAC No comments RAC

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

October 18, 2012 oracle, RAC No comments RAC

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

October 16, 2012 11g, oracle, RAC No comments RAC

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

September 11, 2012 oracle, RAC No comments RAC

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

August 18, 2012 network, oracle No comments RAC

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

March 6, 2012 Internals, oracle, RAC No comments RAC

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

February 9, 2012 Architect, oracle, RAC, software 2 comments RAC

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

January 6, 2012 oracle, RAC No comments RAC

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

December 11, 2011 oracle, RAC No comments RAC

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

December 9, 2011 oracle, RAC No comments RAC

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[……]