I’m pleased to say that I will be speaking at the UKOUG Systems Event 2015, held at Cavendish Conference Center in London, 20 May 2015. My session “Oracle Exadata Meets Elastic Configurations” starts at 10:15 in Portland Suite. Here is the agenda of the UKOUG Systems Event.
In a month time I’ll be also speaking at the Spring Conference of the Bulgarian Oracle User Group. The conference will be held from 12th to 14 (more...)
With the release of Exadata X5 Oracle introduced elastic configurations and changed the process on how the initial configuration is performed. Back before you had to run applyconfig.sh which would go across the nodes and change all the settings according to your config. This script has now evolved and it’s called applyElasticConfig.sh which is part of OEDA (onecommand). During one of the recent deployments I ran into the below problem:
[root@node8 linux-x64]# ./applyElasticConfig. (more...)
During a recent X5 installation I had to configure Link Aggregation Control Protocol (LACP) on the client network of the compute nodes. Although the ports were running at 10Gbits and default configuration of Active/Passive works perfectly fine the customer wanted even distribution of traffic and workload across their core switches.
Link Aggregation Control Protocol (LACP), also known as 802.3ad is a methods of combining multiple physical network connections into one logical connection to increase (more...)
It’s been a while since my last post but I was really busy working on a number of projects.
The purpose of this post is to highlight an issue I had while building a standby database. The environment we had – three 220.127.116.11 databases at host A (primary) and same were restored from backup on another host B (standby), both hosts were running Linux. It’s important to mention that both hosts were (more...)
I’m working on Oracle database migration project where customer have chosen commodity x86 hardware with RHEL6 and EMC storage.
I’ve done many similar installations in the past and I always used the native MPIO in Linux (DM-Multipath) to load balance and failover I/O paths. This time however I’ve got EMC PowerPath doing the load balance and failover and got the native MPIO disabled. From my point of view it’s the same, whether I’ll be using (more...)