Last week, one of our clients had a sudden slow down on all of their applications which is running on two node RAC environment
Below is the summary of the setup:
- Server and Storage: SunFire X4200 with LUNs on EMC CX300
- OS: RHEL 4.3 ES
- Oracle 10.2.0.3 (database and clusterware)
- Database Files, Flash Recovery Area, OCR, and Voting disk are located on OCFS2 filesystems
- Application: Forms and Reports (6i and also lower)
As per the DBA, the workload on the database was normal and there were no changes on the RAC (more...)
Collaborate 09 starts on Sunday, May 3 (a few days from now!) in Orlando. I’ve been offline for several weeks (more on that later), but will be returning to the world of computers and technology in full force in Orlando. I’ve had a few inquiries about whether or not I’ll be at Collaborate, so I thought I’d resurrect my blog with a post about where I’ll be and some of the highlights I see at Collaborate 09.
First, where I’ll be presenting:
- Monday, 10:45-11:45am, #301, “Avoiding Common RAC Problems”
- Tuesday, 9:45am-12pm, #332, “Installing RAC From The Ground Up”
This document will serve as a guide for the Kernel and OS upgrade activities for
- Single Instance on ASM using raw devices
- RAC with ASM (using ASMlib) and OCFS2
Upgrading the Kernel and OS is easy and will just need some few commands. The critical part is the dependencies once the Kernel gets updated, so if you’re using ASMlib and OCFS2 you’ll notice that after the upgrade they’re not working anymore… you can’t startup the ASM, then if your OCR and Voting Disk are on OCFS2 the CRS stack wont start all because the RPMs of ASMlib and OCFS2 are (more...)
The RAC SIG, Oracle and IOUG are thrilled to present the hands-on event dubbed “RAC Attack!” at Collaborate09 in Orlando, FL. It is a half-day University Session in the IOUG Forum scheduled for the morning of Thursday, May 7th.
Each participant will have their own private RAC cluster to use. You’ll be able to install a new cluster, test session failover, perform backup and recovery and just about anything else you’d like to try (time permitting). The session will have lab outlines with very specific instructions that cater to beginners. Advanced users are welcome to test anything (more...)
After a long wait, I have received the Oracle 10g RAC Expert Certification Kit in my hands today, as I have already taken this exam (1Z0-048) in the month of August-2008. More or less it took more than three months to reach in my hands.
Best of luck everyone who is preparing for the Oracle 10g RAC Expert Exam – 1Z0-048.
Check my other blog post on “How to prepare for 1Z0-048 - Oracle 10g RAC Certified Expert Exam.”
The Oracle RAC SIG
are putting on an event in a few weeks in Chicago, August 4th and 5th. It is called the IOUG RAC Attack!
(awesome name, I wonder who came up with it). Since my current job entails supporting an Oracle RAC environment (2 5-node clusters) and we have some newer members who are a bit green in the RAC arena, I thought it would make sense to check into the event and agenda to see if it is worthwhile to send some people to this.
From looking at the agenda and the quality speakers they (more...)
Database creation in RAC environment( 2 instances). can not rely on dbca always CREATE PARAMETER FILE AND PLACE IT IN SHARED LOCATION (O:\TEST\INITTEST.ORA shared location here ) AS FOLLOWING SO THAT BOTH RAC INSTANCES CAN SHARE IT. point to this pfile/spfile from individual instance home/dbs. # START OF INITTEST.ORA *.aq_tm_processes=1*.test1.background_dump_dest='D:\Oracle\admin\test1\bdump'*.