Performing a System Requirements Verification
This chapter contains information that enables you to verify that you are working with the correct system requirements.
Operating System Information
To determine your current operating system information, enter the following command:
|
uname -a |
To determine the exact version number of your operation system, enter the following command:
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oslevel -s |
To determine the system architecture is 64 bit, enter the following command:
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lslpp -L | grep 64bit or:
/usr/bin/getconf HARDWARE_BITMODE |
To determine if the 64bit is enabled and the system started in 64-bit mode, enter the following command:
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bootinfo -K |
OS Patch Information
To determine which operating system patches are installed, enter the following command:
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instfix -a |
To determine whether a patch has been installed, enter the following command:
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instfix -ivk APAR_number |
To determine whether required patches for Oracle 11gR2 have been installed, enter the following command:
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instfix -i -k "IZ41855 IZ51456 IZ52319" |
Determining OS Packages
To determine which operating system packages are installed, enter the following command:
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lslpp -l [fileset_name] |
If you enter lslpp -l, all installed operating system packages will be listed.
To determine whether required operating system packages for Oracle 11gR2 are installed, enter the following command:
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lslpp -l bos.adt.base bos.adt.lib bos.adt.libm bos.perf.libperfstat bos.perf.perfstat bos.perf.proctools rsct.basic.rte rsct.compat.clients.rte xlC.aix61.rte |
Determining RAM
To determine the amount of random-access memory (RAM) installed on your system, enter the following command:
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/usr/sbin/lsattr -E -l sys0 -a realmem |
Determining Swap Space
To determine the amount of swap memory installed on your system, enter the following command:
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/usr/sbin/lsps -a |
Determining X Windows System
To determine whether your X Windows System is working properly on your local system and that your windows manager works correctly, enter the following command:
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xclock |
Determining System Executable Files
To determine whether you are using the correct system executables, enter the following command:
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/usr/bin/which make
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Determining Configured Disk Space
To determine the amount of disk space currently configured on your system, enter the following command:
|
/bin/df -k |
Oracle Version 10 or 11
Hardware Requirements (for DB only)
The system must meet the following minimum hardware requirements:
- For Oracle 10 - at least 1024 MB of physical RAM
- For Oracle 11 - at least 4 GB of physical RAM
- Sufficient swap space. The following table describes the relationship between installed RAM and the configured swap space requirements.
| RAM | Swap Space |
|---|---|
| Between 1GB and 2GB | 1.5 times the size of RAM |
| Between 4GB and 16GB | Equal to the size of RAM |
| 16GB and more | 0.75 times the size of RAM |
- 400 MB of disk space in the /tmp directory
- Up to 3 GB of disk space for the Oracle software, depending on the installation type
- 1.2 GB of disk space for a preconfigured database that uses file system storage (optional)
The disk space requirement for databases that use Automatic Storage Management or raw device storage is described later in this chapter.
- Additional disk space, either on a file system or in an Automatic Storage Management disk group, is required for the flash recovery area if you choose to configure automated backups.
Perform the following steps to ensure that the system meets these requirements:
- To determine the physical RAM size, enter the following command:
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# /usr/sbin/lsattr -E -l sys0 -a realmem |
If the size of the physical RAM is less than the required size, then you must install more memory before continuing.
- To determine the size of the configured swap space, enter the following command:
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# /usr/sbin/lsps -a |
If necessary, refer to the operating system documentation for information about how to configure additional swap space.
- To determine the amount of disk space available in the /tmp directory, enter the following command:
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# df -k /tmp |
If there is less than 400 MB of free disk space available in the /tmp directory, then complete one of the following steps:
- Delete unnecessary files from the /tmp directory to meet the disk space requirement.
- Set the TMP and TMPDIR environment variables when setting the oracle user's environment.
- Extend the file system that contains the /tmp directory. If necessary, contact your system administrator for information about extending file systems.
|
# df -k |
The following table shows the approximate software file disk space requirements for each installation type:
| Installation Type | Requirements for Software Files |
|---|---|
| Enterprise Edition | 2.0 |
| Standard Edition | 3.0 |
| Custom (maximum) | 2.5 |
- To determine whether the system architecture can run the software, enter the following command:
|
# /usr/bin/getconf HARDWARE_BITMODE 64 |
The expected output of this command is 64. If you do not see the expected output, you cannot install the software on this system.