Dear Readers,
My name is Franz Devantier, creator of this blog. I am an Oracle Certified
Professional (OCP DBA 11g) Security DBA.
I will be sharing with you the basic duties of an Oracle DBA, and also
some of the undocumented, and not so well known tasks.
I will make a deal with you: If you refer me to a company that needs
database support, from a few hours per week to full time, and I am able to sign
a contract with them.
Then I will give you 10% of the monthly
contract or deal price every month. When
the contract ends, and we re-sign the contract, I will again give you 10% of the
monthly contract price. This will go on
until the company no longer employs or contracts me or my agents to look after
their databases.
I can do this, because that 10% is my
marketing budget. When we re-sign the
contract, in the future, it may depend on you giving the thumbs up again, and
that is worth 10% of the monthly contract price, to be given to you as
commission.
Contact: Franz
Oracle Database Preinstallation – Part 2
System Architecture
Here
we are just going to verify that the system architecture can run the software.
$
uname –m
Now
you need to crosscheck with the Oracle documentation, being especially careful
with regards to versions. If things do
not match up exactly here, then you will not be able to have a successful install. Typically you will need to give these
findings back to business or management.
Disk Space Requirements
Below
are the minimal requirements for installing the Oracle database 11.2.
=>
1GB of space in the /tmp directory
$
df –h /tmp
If
there is not enough space, then you need to address this issue, before
continuing. You can address this issue
by deleting unnecessary files form the /tmp directory. You may consider resizing the /tmp directory. When you configure Oracle, make sure that you
set the TMP and TMPDIR environment variables to appropriate values.
Depending on the installation type, there would be
different space requirements, for example:
Installation
Type
|
Requirements for
Software Files in GB
|
Enterprise edition
|
3.95
|
Standard Edition
|
3.88
|
Installation
Type
|
Disk Space for
Data Files in GB
|
Enterprise edition
|
1.7
|
Standard Edition
|
1.5
|
Installation
Type
|
Requirements for
Software Files in GB
|
Enterprise edition
|
4.35
|
Standard Edition
|
4.22
|
Installation
Type
|
Disk Space for
Data Files in GB
|
Enterprise edition
|
1.7
|
Standard Edition
|
1.5
|
The bottom half is the specific requirements for Linux x86-64. Each OS will have slightly different requirements.
Before you start the installation you should determine
the amount of free space on the system.
$ df –h
Don’t forget that additional free disk space is required
on your file system or ASM disk group, if you are using the fast recovery area,
and automated backups. Make sure that
you have enough space for this configuration, because otherwise the system can
potentially hang when it runs out of space.
It is designed to hang, so that the integrity of the data is protected,
rather than availability by default.
Think of it this way, not too much point in having things available if
the data that you see has been corrupted or compromised. Rather have too much space allocated for the
fast recovery area to start with.
Display Requirements
The
minimum resolution for Oracle Database 11.2 is quite high. The tools will not work on a Display
resolution of less than 1024 X 768.
Perhaps a good idea to make sure that you have a decent screen or
monitor, before you even start your pre-installation checks.
Franz Devantier,
Need a database health check?
devantierf@gmail.com
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