Tag: Oracle RAC

RAC – Clusterware Intermittently Fails to Start

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While working on a new Grid Infrastructure installation on Red Hat V8.4, we had some issues testing a new cluster: The clusterware failed to come back up after a node reboot… but sometimes it worked. We had the latest 19c…

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How to Fix the Status of the Oracle GI CRS After a Failed Upgrade

Editor’s Note: Because our bloggers have lots of useful tips, every now and then we update and bring forward a popular post from the past. Today’s post was originally published on April 29, 2019. Blogger’s Note: The information in this…

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Oracle RAC: Network Performance with Jumbo Frames

When configuring virtual servers to run Oracle RAC, be sure to use Jumbo Frames for the private network interconnect , just like you would on physical servers.

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How to a recreate disk group used by CRS

I will go through detailed steps here on how to recreate a disk group used by CRS. Some things to bear in mind: – I created this cluster based on another existing cluster, so I just followed the same patterns…

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How to run DBSAT on RAC Instances

The scope of this article is to provide a brief summary of how to run Oracle Database Security Assessment Tool (DBSAT) on Oracle Real Application Cluster using the parameters to exclude sections on the Reporter to avoid duplicated information into…

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Oracle service secrets: more performance with less load-balancing

A huge but often overlooked aspect of tuning cluster databases is workload management. That means controlling on which and how many nodes a RAC database should actively work. The default service and most intuitive configuration is to spread the workload…

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Oracle RAC on Azure

Microsoft Azure provides an acceptable and affordable platform for a training environment. I am an Oracle DBA, and use it to test functionality, new technologies and features of different Oracle products. Azure supplies a template for Oracle linux and it…

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Oracle RAC scalability: slides from Oracle OpenWorld 2015

Christo Kutrovsky revisits his OOW 2015 presentation and explores the type of challenges that come with scaling an application horizontally via Oracle RAC.

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Slimming Down Oracle RAC 12c’s resource footprint

Oracle Grid Infrastructure 12c uses a considerable amount of RAM and CPU resources; here are a few tips to shoehorn it into a 2GB virtual machine.

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Create Windows Service for Oracle RAC

It’s my first time on RAC system for Windows and I’m happy to learn something new to share. I created a new service for database (restoredb) only to find out the ORACLE_HOME for the service is “c:\\oracle\\product\\10.2.0\\asm_1” Any ideas as…

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