Posts published under the Open source Team account are collective contributions by the dbi services open infrastructure consultants. The practice covers open-source databases and platforms, PostgreSQL first of all, along with MySQL, MariaDB, and Linux, from architecture, replication, and high availability to performance tuning and operations under service level agreements, and contributes actively to the PostgreSQL community.
It has been quite a while since the last post in this series. Today we’ll look at what you know from Oracle as: Invisible indexes. In case you wonder what they might be useful for: Imagine you want to test if an index would benefit one or more queries without affecting the production workload. In other words: Wouldn’t it be…
In the last post we did a click/click/click setup of the PEM server. What we want to do now is to attach a PostgreSQL instance to the PEM server for being able to monitor and administer it. For that we need to install the PEM agent on a host where we have a PostgreSQL instance running (192.168.22.249 in my case,…
In case you missed it: EnterpriseDB has released the beta of Postgres Enterprise Manager 7 beta. When installation is as easy as for the current version that should just be a matter of clicking next, lets see. Because the installer will create the systemd services installation should be done as root: [root@edbpem tmp]$ ls -l total 289076 -rw-r–r–. 1 root…
What is Apache Kafka ? No, Kafka is not only the famous author (en.wikipedia.org/wiki/Franz_Kafka), it’s an open-source distributed pub-sub messaging system with powerful skills like scalability and fault tolerance. It’s also a stream processing platform (near real-time) for the streaming datasources. The design of Apache Kafka is strongly influenced by the commit logs. Apache Kafka was originally developed by Linkedin and was…
As this project is going to start soon and I learned that there is a x86 version of Solaris 8, today I thought it would be great if I can get a test setup up and running. First issue: Where to get the Solaris 8 distribution from. This turned out be quite easy, there is a support note which links…
When you do not know what the Oracle Trace File Analyzer (tfa) is or you have heard about it but you don’t know what it is for then you probably should read this, especially when you are working in clustered Oracle environments. You know, Oracle loves to create plenty of trace files in various places (yes, this got much better…
When you want to offload reporting stuff from Oracle to PostgreSQL there are several solutions you can go for. There most widely known probably are Oracle GoldenGate and SharePlex. EnterpriseDB has its own solution for this which is called EDB Replication Server. As soon as you have one subscription from EnterpriseDB this tool is included and can be used to…
Yesterday I had fun with Opatch again. We wanted to apply the latest PSU (12.1.0.2.170418) on top of a 12.1.0.2 GI without any patches applied: xxxxx@xxxxx:/disk00/app/12.1.0/grid_2_4/diagnostics/ [+ASM2] opatch lsinv Oracle Interim Patch Installer version 12.2.0.1.8 Copyright (c) 2017, Oracle Corporation. All rights reserved. Oracle Home : /disk00/app/12.1.0/grid_2_4 Central Inventory : /disk00/app/oraInventory from : /disk00/app/12.1.0/grid_2_4/oraInst.loc OPatch version : 12.2.0.1.8 OUI version…
Just be clear this is not a performance test as we had to connect the Pure Storage box through 1GB/s interfaces. Basically it is more about how you can interact with the storage system (command line & web interface) and to get a feeling on what is possible. In the last post we explained on how we did the setup…
A long time ago I blogged on how you can use the PostgreSQL development snapshots to test new PostgreSQL features before alpha/beta/rc releases are officially released. Another way to do this is to use git to get the latest sources and build PostgreSQL from there. Everything which was committed will be available to test. Btw: A great way to stay…
Yesterday we got a Pure Storage All Flash Array for testing. As the name implies this is all about Flash storage. What makes Pure Storage different from other vendors is that you don’t buy just a storage box and then pay the usual maintenance costs but you pay for a storage subscription which should keep your storage up to date…
This post is mainly for self documentation as I have to search my old notes every time I want to do this (I am faster by searching on our blog 🙂 ): If you want to monitor GoldenGate with Cloud Control using the GoldenGate plugin you’ll have to install the JAGENT on the host where GoldenGate is running on and…
