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Getting started with iSCSI part III-Mounting Storage

After all the necessary work has been completed on the iSCSI appliance we are now ready to present the storage to the RAC nodes; I am using RHEL 5 for these. RHEL 5 and clones require a specific RPM to manage iSCSI storage, which is part of the distribution. Note that the package has a…
PRVF-4664 : Found inconsistent name resolution entries for SCAN name

This has proven to be a worthy adversary – “PRVF-4664 : Found inconsistent name resolution entries for SCAN name”. The error has been thrown at the end of a 11.2.0.1 Grid Infrastructure installation, during the cluster verification utility run. Some bloggers I checked recommended workarounds, but I wanted the solution. Some facts first: Oracle Grid…
Getting started with iSCSI part II-Presenting Storage

This part of the series focuses on how to add storage to your appliance and then make that available to your clients. I have focussed on providing quick success, and this setup is mainly for a lab to experiment with as it’s not secure enough for a production roll out. This part of the article…
Getting started with iSCSI part I-Openfiler Fundamentals

After having read a number of articles detailing the use of Openfiler and Real Application Clusters I was intrigued, especially by the prospect to set up my own extended distance cluster. There was an excellent article by vnull (Jakub Wartak) on OTN about how to do this. So Openfiler seems to be my “SAN”, provided…
Connected to an idle instance-RAC 10.2.0.4.1

I encountered a strange problem today with a 3 node cluster. Let’s start with the facts first: RHEL 5.3 64bit Oracle Clusterware 10.2.0.4 + bundle patch#4 Oracle ASM 10.2.0.4.1 (that is PSU 1) ASMLib in use Cluster members: nodea, nodeb, nodec (their real names are known to the author) UPDATE 221219: Oracle 10.2 is effectively…
Build your own RAC system part IV – extending Grid Infrastructure

UPDATE 221103: Oracle 11.2 is effectively out of support, this article is now archived and should not be referred to After having experimented with my 11.2.0.1 Clusterware setup in the lab, I thought it was time to put the promise of easy extensibility to the test and run addNode.sh to extend the cluster to two…
Archivelog retention policy changes in RMAN 11g

UPDATE 221103: Oracle 11.2 is effectively out of support, this article is now archived and should not be referred to In the past, that means at least until 10.2.x it used to be a bit clumsy to set the archivelog deletion policy to “applied on standby” on both primary and standby database. It involved setting…
Building your own RAC system part III: Grid Infrastructure

UPDATE 221103: Oracle 11.2 is effectively out of support, this article is now archived and shouldn’t be referred to. This is the third part of my “build your own RAC” article series, and this time we are about to install and discuss Grid Infrastructure. After all the prerequisistes are met, some of which are described…
Build your own 11.2 RAC system-part II: DNS & DHCP for GNS

UPDATE 221103: Oracle 11.2 is effectively out of support, this article is now archived and shouldn’t be referred to. Wow, I managed to cram 4 acronyms into the subject line, not bad for a Friday! The reason of this post is simple: I want to get Grid Naming Service (GNS) up and running on my…
Oracle Restart 11g Release 2

Update 221111: This article was originally written for Oracle 11.2/Oracle Linux 5. It has not yet been updated and therefore shouldn’t be referred to. Oracle Restart is a new feature introduced in Clusterware 11.2. In simple terms it allows you to register resource such as ASM disk groups, ASM- and RDBMS instances in Clusterware in…