Oracle Database 11g Express Edition

[Yoana Terrano]

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Test drive advancements in Oracle Database that make life easier for DBAs and other administrators using free XE. With XE, any administrator can benefit from playing with many of the advanced features of Oracle Database.

Because it is a regular Oracle Database, XE provides compatibility with other Oracle Database editions. If you outgrow Oracle Database XE, you can easily move to another edition of Oracle Database on-premises or Oracle Cloud and get unlimited resources, 24x7 customer support, and regular patches. You can also move to Oracle Autonomous Database in the Oracle Cloud Always Free Tier and let Oracle manage your database. Oracle provides numerous data movement tools to make migrating Oracle Database XE easy.

I am trying to dowload oracle database express edition in my macbook. In the download options in Oracle website, I only see the versions for windows and Linux. Does that mean that there's no version for mac or OS?

"Symantec NetBackup 7.x Database and Application Agent Compatibility List", makes no reference to specific Oracle database editions, so I would take that to indicate support for "All Editions". But, since Oracle Express Edition (XE) is substantially different than SE/EE... I would like to confirm that:

Don't think its supported - XE is a free edition. Usually Symantec only deals with official supported software - XE is only community supported. But if XE edition does RMAN it may work. Remember - Netbackup does not backup Oracle, Netbackup it's only a media manager layer for RMAN.

i have identified few of the oracle express edition installations in our environment however it is clearly mentioned on oracle website that this product is completely free still why SAM pro normalizes it to licensable product.

In an audit situation, there are possibilities of overage use, which may require applying the license of a higher edition. My experience has been that ServiceNow attempts to keep risky software at its forefront. It's not an Open Source License.

If you do not want to see Oracle DB XE in your compliance views, turn of "License Under Management". Alternatively, if you don't want to normalize it or have it in your compliance data at all, delete the Software Model (assuming you have auto-create Software Models turned off). You will no longer see it in the compliance view in Workspace.

It's because the licensable flag is set at the software product level (samp_sw_product > product_type) rather than at the edition level and express edition is still part of the Oracle database product family.

This article describes the Oracle Database 18c Express Edition (XE) RPM installation on Oracle Linux 6 (OL6) and 7 (OL7) 64-bit. The article is based on a server installation with a minimum of 2G swap and secure Linux set to permissive. An example of this type of Linux installation can be seen here (OL6 or OL7).

With the RPM file downloaded, you can install the Oracle prerequisites and software using the following command as the "root" user. It automatically pulls down all dependencies, including the "oracle-database-preinstall-18c" package. If you do this the "oracle" user doesn't have a home directory created, so I install the preinstall package first, so the "oracle" user is as I expect it. The additional command is included below, but commented out.

Now as mentioned, Docker is another exciting topic, but it is a big topic with many areas to cover. Let's keep it simple, stick to some basics and hopefully help you get 18c XE running inside a Docker container in no time.

This is where the beauty of Docker (containers in general) comes in. You are getting a small isolated environment in which you can run your application or database. To give you a basic idea, imagine you are running an 18c XE database totally isolated in a container. To get you thinking, have a look at this:

Now as you can see using a container you get isolation. If you are keen to understand this better, you can read more about the following three areas. BUT be aware this will get technical really quickly and might scare you away. You do not need to know these details, just be aware these are part of the underlying technology that makes containers possible:

Now before getting sidetracked to write more about Docker, let's get back to 18c XE. Assuming you have installed Docker, if not please review the previous post where links to get you started are provided. We also assume you have downloaded the 18c XE software - you should have a file called oracle-database-xe-18c-1.0-1.x86_64.rpm

So here is the main goal of what to achieve in this blog series: it is to install 18c XE inside an Oracle Linux 7 container. Well to be more specific, create a Docker Image. Now think of an Image - as what some might refer to as; a golden template which you can then use to create multiple copies from it that are exactly the same. To put this in simple terms, think of creating a Virtual Machine; it has all the software installed, you then take a snapshot or backup from this Virtual Machine. You then take this snapshot and create (clone) as many copies of it as required and the resulting Virtual Machines will all be the same! You can then use them, and once done, maybe just delete them. When you need a new one, go back to your backup (also referred to as golden template) and just clone that again. This should be a familiar process to most and the same concept will be applied here. We will create a Docker image with Oracle Linux and 18c XE installed that can then be used to quickly establish new containers, based on this image.

Keep in mind that Copy-on-Write technology is used here, so all these containers do not really take much space. You can run many containers and the base layers of the container will point to the image which it was created from. As soon as you start adding data or make changes inside the container, additional storage will be used for the new data blocks. We will get more into storage in a later post, but for now the goal is to just create a container.

At this stage, this post is getting a bit long, but the goal is to get you started with a few basics of running a Docker container. In the next post, we will go a little faster and create a Docker image with the Oracle 18c XE software installed. We hope to give you the option to learn a bit of Docker while we install and explore 18c XE.

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Oracle Database 21c Express Edition (Oracle Database XE) is a free version of the world's most capable relational database. Oracle Database XE is easy to install, easy to manage, and easy to develop with. With Oracle Database XE, you use an intuitive, browser-based interface to administer the database, create tables, views, and other database objects, import, export, and view table data, run queries and SQL scripts, and generate reports.

Oracle Database XE for Windows x64 is supported on the following operating system versions: Windows 10 x64 - Pro, Pro for Workstations, Enterprise, and Education editions.Windows Server 2012 R2 x64 - Standard, Datacenter, Essentials, and Foundation editions.Windows Server 2016 x64 - Standard, Datacenter, and Essentials editions .Windows Server 2019 x64 - Standard, Datacenter, and Essentials editions.

You must be part of the Administrators group on Windows to install Oracle Database XE. If you are logged in as a domain user, ensure sure that you are connected to the network before you install Oracle Database XE.

Oracle Database XE limits itself automatically to two cores for processing. For example, on a computer with 2 dual-core CPUs (four cores), if a large number of database clients try to simultaneously execute CPU-intensive queries, then Oracle Database XE will process the queries at the rate of just two cores even if more CPU capacity is available.

Oracle Database XE restricts itself to only one installation per logical environment. The logical environment can either be a virtual host such as a VM or container, or a physical host. If more than one Oracle Database XE installation is attempted to be started in such a logical environment, an "ORA-00442: Oracle Database Express Edition (XE) single instance violation error" is raised and the database will not start.

Some deployments might be able to use Microsoft SQL Server Express for the Deep Security Manager database. If you think your deployment cannot operate within the following limitations, use another database or migrate to the Enterprise edition.

If you use the VMs coming your free account, you are aware that their limited to 1GB of RAM, which is just the low limit for Oracle XE database installation. Unfortunately, the VMs are actually limited to 970MB, which is bellow the memory limits

Now we have to edit the installation file /etc/init.d/oracle-xe-18c
Inside this file, we need to change the MEMORY_CONSTRUCT parameter to use the sizes we want to, instead of allow the script to divide the current system memory.
I have set 500M and 400M, but you just need to make sure is at least 400M as we saw in the previous attempt

NetBeans IDE includes built-in support for Oracle Database. You can easily establish a connection from inside the IDE and begin working with the database. This tutorial demonstrates how to use a local installation of Oracle Database 10_g_ Express Edition (Oracle Database XE), a lightweight database that is free to develop, deploy, and distribute.

This tutorial demonstrates how to connect to an Oracle Database XE instance installed on your local system, but the steps can also be applied when you are connecting to a remote instance. If you are connecting to a local instance you need to download and install Oracle Database XE. The installation process is simple and intuitive, but if you have questions, refer to the Oracle Database XE installation guide for your platform.

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