Setup udev rules with Red Hat 5/6 on VMware
May 16, 2013 Leave a Comment
[root@rhel59dra ~]# /sbin/scsi_id -g -u -s /block/sdc
Note:
[root@rhel59dra ~]# ls -l /dev/ASM*
Oracle ACE Director: Charles Kim
May 16, 2013 Leave a Comment
[root@rhel59dra ~]# /sbin/scsi_id -g -u -s /block/sdc
[root@rhel59dra ~]# ls -l /dev/ASM*
May 8, 2013 Leave a Comment
Download the latest ZFS Storage Appliance with the Exadata
This presentation was delivered at Collaborate 2013 and Dallas Oracle User Group 2013 by Charles Kim, Oracle ACE Director
May 8, 2013 Leave a Comment
Basic instructions for adding a new node to the RAC cluster:
2. On the target node, make sure /u01/app/11.2.0 directory is created and empty. This directory needs to be owned as: oracle:dba
3. Run addnode.ksh (shown below) on an existing RAC node with parameters replaced as oracle
4. As instructed, execute root.sh on target node as root
Here’s all the caveats:
1. It is still buggy on the cluvfy side for 11.2.0.3. It had bugs in 11.2.0.2 also. I recall we had to set IGNORE_PREADDNODE_CHECKS to Y back then, and it looks like we still have to.
2. /u01/app/oraInventory has to be pre-created and owned by oracle:dba and has to be completely empty
3. /u01/app/11.2.0 needs to be owned by oracle:dba. The /u01/app/11.2.0/grid directory cannot exist … even as an empty directory. The addnode.sh script attempts to do a “mkdir grid” as oracle, and if it fails, it dies.
4. It died on me twice at “crsctl start listener -n “target_node” … have to create default listener first
5. I did not leverage the -noCopy method. This working example will copy the Grid Home from source RAC node to the new RAC node via scp/ssh. I don’t think it is a big deal … added about 5 minutes to the overall time (see below).
Copying to remote nodes (Saturday, May 4, 2013 8:52:50 PM CDT)………………………………………………………………………………….. 96% Done.Home copied to new nodesSaving inventory on nodes (Saturday, May 4, 2013 8:56:03 PM CDT)
rhel59dra:/u01/app/oracle/deploy_rac
[root@rhel59drb db_backup]# tail -f /u01/app/11.2.0/grid/install/root_rhel59drb_2013-05-04_21-18-28.log
Configure Oracle Grid Infrastructure for a Cluster … succeeded
+ASM1 > crs_stat -t -v
April 26, 2013 Leave a Comment
March 12, 2013 Leave a Comment
Download the latest ASM Pocket Reference Guide prepared by Charles Kim, Oracle ACE Director, and Nitin Vengurlekar
February 10, 2013 Leave a Comment
We will post the 10th session shortly …
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Session # |
Title |
Room Assignment and Time |
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604 |
Rolling your own Database Operations Center (DOC) using Oracle Technology you already own |
Mile High Ballroom 2A => Mon, Apr 08, 2013 (09:45 AM – 10:45 AM) |
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344 |
Performance Tuning your DB Cloud in OEM 12c Cloud Control – 360 Degrees |
Mile High Ballroom 4A => Mon, Apr 08, 2013 (09:45 AM – 10:45 AM) |
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614 |
Automate Data Guard Best Practices |
Mile High Ballroom 2B => Mon, Apr 08, 2013 (05:00 PM – 06:00 PM) |
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477 |
Why Every Database Needs to be Virtualized |
Mile High Ballroom 4A => Tue, Apr 09, 2013 (12:00 PM – 12:30 PM) |
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343 |
Oracle VM, OEM 12c and Cloud Computing: Panel of Experts |
C#13 vSIG Meeting => Tue, Apr 09, 2013 (4:15 PM – 5:15 PM) |
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441 |
ASM New Features – The New ASM Frontier |
Mile High Ballroom 2C => Wed, Apr 10, 2013 (08:15 AM – 09:15 AM) |
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414 |
Engineered Systems Curriculum: The Perfect Marriage: ZFS Storage Appliance with Exadata |
Mile High Ballroom 1C => Wed, Apr 10, 2013 (11:00 AM – 12:00 PM) |
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783 |
Virtualized Oracle Stretched RAC Cluster using VMware vSphere and EMC VPLEX |
Mile High Ballroom 2A => Wed, Apr 10, 2013 (04:15 PM – 05:15 PM) |
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757 |
From Big Data to Exadata: The Best of Both Worlds for Business Analytics |
Mile High Ballroom 1B => Thu, Apr 11, 2013 (09:45 AM – 10:45 AM) |
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December 8, 2012 Leave a Comment

Viscosity’s Core Competency centers arounds Oracle Real Application Clusters (RAC). Because we are the top Oracle RAC Experts, we intimately know storage architecture, network infrastructure, operating systems, and most importantly, Oracle RAC database interactions within the ecosystem.
Viscosity was formed by former Oracle Employees each of which worked in various capacities within Oracle Corporation. These capacities include Oracle Database, RAC Development, Oracle Consulting and Oracle Technical Architects, Design and Performance Tuning experts.
I am a co-founder and President of Viscosity North America, an Oracle ACE Director, an Oracle Certified DBA, Certified RAC Expert and a VMware Certified Professional. I specialize in Exadata, RAC, and Virtualization (VMware and Oracle VM) and authored three books: Oracle Database 11g New Features for DBA and Developers, Linux Recipes for Oracle DBAs and Oracle Data Guard 11g Handbook. I hold certifications in Oracle, VMware, Red Hat Linux, and Microsoft and has over 20 years of Oracle experience. I’ve sat on the panel of experts at VM World and Oracle OpenWorld for virtualization and Linux. I was one of the founding members of the IOUG virtualization SIG that launched in 2011 at Oracle OpenWorld.
If you look at the core of our competencies, we focus on what we are best at … RAC. RAC experts are expected to have in-depth knowledge in networks, clustering, storage, and operating systems. Several of the managing directors have served as system administrators in past lives and hold specialized certifications in flavors of Unix.
Because we know RAC, we know infrastructure. Because we know infrastructure, we’ve adjusted our focus to the world of Database Cloud. Not only do we adopt Oracle’s consolidation theme with Oracle RAC, we are heavily invested in VMware and Oracle VM. Several of the managing directors at Viscosity hold certifications on VMware.
Another area of mastery that we have taken is in the world of Exadata and Oracle engineered systems. Not only are we the experts in Exadata implementation and performance tuning, we are also experts inother engineered systems such as the ZFS Storage Appliance and Oracle Database Appliance.
Viscosity’s Oracle Center of Expertise has developed best practices and tight partner relationships to implement world-class solutions. Our vast experience and intellectual property give customers insight into what is driving IT complexity. We can deliver a set of practical executable plans for simplifying IT infrastructure, helping reduce operating costs while freeing up resources for new business initiatives.
November 8, 2012 Leave a Comment
dbca with the silent option is the best way to create a database. If you issue the find command from $ORACLE_HOME, you will see that oracle ships with two generic templates:
rhel59dra:/u01/app/oracle/product/11.2.0/db
dbca -silent \
August 14, 2012 Leave a Comment
AS Root
Verification of OCR integrity was successful.
July 5, 2012 Leave a Comment
spool off