Hardware & Storage

Monitoring Linux With Nmon

By Mouhamadou Diaw I was looking for tools to monitor linux servers and I found an interesting one nmon ( short for Nigel’s Monitor). I did some tests. In this blog I am describing how(…)

ODA – Reducing number of cores : Getting error DCS-10045

To perform some tests in order to determine the accurate number of cores to be used by the database application, I had to increase and decrease the number of CPU cores on an ODA using the DCS stack.  When increasing(…)

ODA – manually resetting a CPU alert using Fault Manager

While supporting since several years ODAs of different generations and versions, we faced time to time some hardware alerts sent back by the ILOM. However all of them are not related to real hardware issues and are false positive. To(…)

ODA 12.2.1.2.0: Some curious password management rules

While deploying an ODA based on the DCS stack (odacli), it is mandatory to provide a "master" password at appliance creation. The web GUI provides for that a small tooltip which describes the rules applied on password management. However it(…)

Migrate Oracle Database(s) and ASM diskgroups from VMWARE to Oracle VM

This is a step by step demonstration on how to migrate any ASM disk groups from a cluster to another. May be use, with or without virtualization and may be used with storage layer snapshot for fast environment provisioning. Step(…)

ODA X7-2S/M 12.2.1.2.0: update-repository fails after re-image

While playing with a brand new ODA X7-2M, I faced a strange behaviour after re-imaging the ODA with the latest version 12.2.1.2.0. Basically after re-imaging and doing the configure-firstnet the next step is to import the GI clone in the(…)

Automate OVM deployment for a production ready Oracle RAC 12.2 architecture – (part 02)

In this post we are going to deploy a R.A.C system ready to run production load with near-zero knowledge with R.A.C, Oracle cluster nor Oracle database. We are going to use the “Deploy Cluster Tool” which is provide by Oracle(…)

Automate OVM deployment for a production ready Oracle RAC 12.2 architecture – (part 01)

After having worked with OVM on various architectures I can say that it is a good technology to easily build virtualized environments for production applications. Because it is based on XEN and has simple ways to deal with existing storage(…)

Recommended DB Parameters on the Oracle Database Appliance (ODA)

When creating a DB on the ODA using # oakcli create database -db <db-name> a template is used to set a couple of DB parameters like e.g. _datafile_write_errors_crash_instance=FALSE _db_writer_coalesce_area_size=16777216 _disable_interface_checking=TRUE _ENABLE_NUMA_SUPPORT=FALSE(…)

ODA – 32GB template but got a database with 16GB SGA???

I got an interesting question today from a customer which created a database on ODA. He selected the template odb-04 which shows 32GB Memory but got a database with a 16GB SGA… Is it due to the PGA size, a(…)