Initially when we started to use Oracle VM we did lot of performance testing and at that point we went with Paravirtualized VM’s (PVM) due to better performance we saw with them. Now with our recent upgrade to Oracle VM…
One of the reasons why we started using Oracle VM was due to Oracle’s licensing policy with their products running on top of Oracle VM. If you “pin” (or hard partition) the virtual machine to specific cores you don’t need…
We were patching Exadata and one of the YUM pre-checks failed due to invalid LVM size. We hadn’t done any resizing lately so I think issue had been there already but for whatever reason it wasn’t noticed. For backing up…
We implemented Oracle VM 3.3.2 around two years ago and biggest issue we had was using iSCSI storage having sub-optimal latency and throughput with parallel sessions and high load in our performance tests. In the end this was resolved by linux disk partition…
I was thinking recently that we need some tool where we store our team’s passwords for all the different logins we have. Few requirements what I came up with: The server or the password file needs to be hosted on…
This is more of informative story what happened to us recently. In the past we had issue with one of the Exadata cell node where the RAID HBA card has failed. After working with support they decided to replace the card…
We recently upgraded our LAN network from 1G to 10G but the Oracle OVS servers network cards showed only 1G link even though the advertised link was 10G. [root@ovs1 ~]# ethtool em1 Settings for em1: Supported ports: [ FIBRE ]…
Although we have quite wide Oracle Linux stack I had not come across with pam_tally2 before we got Exadata. If you haven’t read about it it’s module which takes care of failed logins and locks account after certain number of…
Now when we have used demo 3.4.2 for some time without issues I decided to upgrade our sandbox Oracle VM setup from 3.3.3 to 3.4.2 to get experience for the actual production upgrade coming later. We have two installations of…
I was doing some tasks off from my task list and one of the things exachk highlighted was that we should create user CELLDIAG on cells. Beginning with Exadata Storage Server Software version 12.1.2.2.0, the storage server user “CELLDIAG” is…