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Installing Oracle 12.1.0.2 RAC on Oracle Linux 7-part 2
In the first part of the article series you could read how a kickstart file made the installation of Oracle Linux 7 a lot more bearable. In this part of the series it’s all about configuring the operating system. The installation of Grid Infrastructure and the Oracle database is for another set of posts. There…
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Installing Oracle 12.1.0.2 RAC on Oracle Linux 7-part 1
Now that 12.1.0.2 is certified on RedHat Linux 7 and spin-off environments it’s time to test the installation of RAC on such a system. The installation of the OS is different from Oracle Linux 5 and 6-with these distributions was very straight forward how to install the operating system the method has changed significantly in…
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RAC One Node 12c-revisited on ODA 12.1.2.1.0 featuring database on ACFS
Thanks to Andy Colvin (@acolvin) and the Enkitec lab I have been able to get my hands on an ODA X4-2. And since that’s a lot quieter than turning on my own lab server, and also a lot faster I used the environment to test RAC One Node in 12.1.0.2.1. I recently had a question…
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Adventures in RAC: gc buffer busy acquire and release
It seems that I’m getting more and more drawn into the world of performance analysis, and since I sometimes tend to forget things I need to write them down. I almost enjoy the “getting there” more than ultimately solving the problem. You pick up quite a few things on the way. This environment is Exadata…
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UKOUG post conference geek update part 1 – ACFS for Oracle databases
One of the many interesting things I heard at the conference this time around was that Oracle’s future direction includes the use of database files on ACFS. When ACFS came out this was strictly ruled out, but has been possible for a little while now, I believe with 12.1.0.1.0. With the Oracle Database Appliance (ODA)…
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Little things worth knowing: creating the Swingbench order entry schema “lights out”
This is a little note, primarily to myself I guess, about the creation of the order entry schema (part of Swingbench, written by Dominic Giles) when no VNC sessions are available. Instead, you can create the schema on the command line. I always execute commands on remote systems in a screen session for increased peace of…
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Concurrent statistics gathering in 12.1.0.2
Prompted by an actual task at hand I spent some time investigating an 11.2.0.2 feature – concurrent statistics gathering. It has been on my to-do list for quite some time but so far I didn’t have a use case, and use cases make it so much easier. The question was-how can I gather statistics on a…
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Little things worth knowing: ORACLE_SID, instance_name and the database names in Clusterware
If you ever wanted to know how Clusterware works with registered database resources, read on! It takes a little while to get your head around the concepts of the ORACLE_SID, the instance_name and the database name as well. And how Clusterware deals with all of them. Although this post has been written on 12.1.0.2.0 on…
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Interesting observations executing SLOB2 with ext4 and xfs on SSD
My lab server has 2 SSDs, one is connected using SATA 2 and another is connected using SATA 3. I’d expect the SATA 3 connected device to be equally well equipped or even better to do work than the “old” interface. I ran SLOB on these devices to find out if there was a difference.…
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Exadata and Virtual Private Database: will it offload my query?
During one of the classes I taught about Exadata optimisations I had an interesting question: If I am using VPD, will Exadata still offload the query? Background is that we discussed function offloading, and the meta-view v$sqlfn_metadata. It turned out that SYS_CONTEXT() is not offloadable in 11.2.0.4. Since I’m a great fan of the Tom…
