Everyone will be very pleased to hear that Oracle’s third attempt at producing a usable database product on Linux has largely been successful. The first two usually worked but only after much aggravation. Forget all the extras that 8.1.6 provides, you can get the thing installed with much less grief!
Of course, I wouldn’t go so far as to say that it was simple and straight-forward all the time. It is Oracle that we’re talking about here.
I’ll start by describing how I got Oracle installed on my box and finish off with some questions and answers, much in the same format as the HOWTO. It’s probably worth having a look at the HOWTO still as many of the problems are similar and the solutions given there may give you some idea of where to start looking.
First, some news on my ‘server’ configuration: I still have the same Celeron 466 with 128Mb of memory. On the software side I’ve upgraded to Mandrake 7.1 (if I’d been running a production Oracle server I wouldn’t have taken the risk). I didn’t remove my old installation of Oracle before starting on the new one and I didn’t attempt to perform an upgrade.
I did remove JRE (Blackdown 1.1.6v5) and my installation of JDK (1.2.2) from my path. Oracle now comes with its own JRE, so even having the risk of it using the wrong one made me paranoid.
The last thing to note is that this time I downloaded my copy rather than using a CD. This seems to be what most other people do, so my tale here should be closer to ‘real life.’
My successful install
The process was as follows:
- Download Oracle 8i R2
- Extract the archive
- Create the required users and groups
- Make sure X is set up correctly
- Start the installer
- Quick tests
Secondly the extraction. You’ll find that it comes in a standard tar archive compressed with GNU Zip. This command should get all the files out:
tar zxvf oracle8161.tar.gz
When you extract it, remember that the files coming out are slightly bigger (301807K on my machine). So you need over 500Mb of disk space before you even start the installation!
Before you actually start the installation, you’ll need to switch to “root” for a couple of commands. Start by creating a group called “dba” and a user “oracle”. Your new user should be in the new group. Log in as your new “oracle” user and make sure your X Windows system is working properly. (If you can fire up a new ‘xterm’ you’re fine.) The Oracle installer, as before, works only in a graphical environment.
Go to where you extracted the software archive. You’ll find a directory has been created (“Oracle8iR2”). Move into it and you’re ready to start the installation!
(A quick note: in the same directory there’s “index.htm” which is the root page for all the Oracle installation document. This seems to be improved over earlier releases and is worth a read.)
A splash screen should appear, followed by a Windows-style Wizard/Installer. I find the default options for almost everything to be fine. Broadly speaking, and assuming some common-sense is used, just clicking “Next” continually should result in a working installation. In slightly more detail…
(Note that there are a few points where the installer asks you to log in as “root” to run some shell scripts. To simplify the text below, I’ve missed these steps out. Simply do as it says and click “Retry” once it’s done.)
- Welcome screen. Click “Next.”
- File Locations screen. The top box should be correct; it displays the location of the archive containing all the software about to be installed. The second box is the “base” of you Oracle installation. I chose “/home/ora816” but this is not recommended. Have a read of the OFA (Oracle Flexible Architecture) documentation.
- Available Products screen. If you’re installing a server, select “Oracle 8i Enterprise Edition 18.104.22.168.0”; otherwise select “Oracle 8i Client 22.214.171.124.0”. I’m assuming that you’re building a server and click the first option.
- Installation Types screen. Do you want a “Typical”, “Minimal” or “Custom” installation. Unless you really know what you’re doing, pick “Typical”.
- Upgrading or Migrating an Existing Database screen. If you have a previous installation, Oracle will ask whether you want to upgrade your database to the new 8.1.6 format. I didn’t. I’d recommend doing this yourself once the installation process is complete even if you do.
- Database Identification screen. Here Oracle asks you for a Global Database Name and a SID. As before, this is something your DBA probably has an opinion on. If you’re the DBA and you don’t know what it’s asking for, enter “dev1” for both.
- Database File Location screen. Now Oracle knows what you want to call your database, it asks you where you want to put all the files that make up the database. Think back to your reading of the OFA documentation for this.
- Summary screen. Oracle now tells you what it’s planning on installing. Click “Install” if you’re sure, or go to the “Previous” screen an juggle the options around.
- Configuration Tools. First Oracle runs the Net8 Configuration Assistant and then runs the Database Configuration Assistant. Basically, it sets up your networking and creates the database you asked for. No user intervention is required. (Note: the SYS account password is “change_on_install” and the SYSTEM password is “manager”. You should change both using the SQL*Plus “password” command as soon as possible.)
- End of Installation. That’s it, you have a complete installation!
If you want to install Oracle Programmer (Pro*C, etc), you need to follow the same process as before: go back through the installation process, but this time following the “Oracle Client” route. The rest of the process is similar to the above and very straight-forward. The new installer even asks you if you want to start again once your database has been created.
And if you want to set up a network connection to another machine, the process is exactly the same as for Oracle 8i (and is covered in the main HOWTO).
Questions and answers
As before, many of the problems come from your choice of Java Virtual Machine. R2 actually comes with a runtime environment this time (JRE 1.1.8), which does make things easier. However I have heard reports that older versions sometimes work better. The older version is normally Blackdown’s 1.1.6v5 release, the same Oracle used to recommend with their 8.1.5 release.
One thing that is exactly the same is the amount of memory required. I don’t remember seeing a figure in their old documentation, but they say you need 400Mb this time, either real or virtual, for 8.1.6. I have 384Mb in total on my machine and it was fine. The default database configuration seems to use more memory but, as always, you can change that.
Running Redhat 7 or another glibc 2.2 based distribution
Short answer: add “export LD_ASSUME_KERNEL=2.2.5” to your profile and then type “. /usr/i386-glib21-linux/bin/i386-glibc21-linux-env.sh”.
Long answer: look at my page on the subject.