Updating AIX with a new maintenance level

Your current version and release of AIX® must match the level of AIX to which you are updating. Learn how to update your current maintenance level of IBM® AIX.

Attention: This procedure requires that you restart AIX. Whenever you restart AIX, schedule your downtime when it least impacts your workload to protect yourself from a possible loss of data or functionality. Before you update AIX with a new maintenance level, ensure that you have reliable backups of your data and any customized applications or volume groups. For instructions on how to create a system backup, see Creating system backups.

The following steps show you how to use a CD-ROM or DVD device to update AIX with a new maintenance level.

Step 1. Prepare for the update procedure

Before starting the update procedure, complete the following prerequisites:

You must be logged in to the server as the root user.
Either insert the media that contains the optional software or service updates into the appropriate drive or know the local or routed path to the software.
If system files have been modified, back them up separately before updates are applied, because the update process might replace configuration files.
Ensure that other users who have access to your server are logged off.
Verify that your applications run on the new AIX maintenance level.
Verify that all currently installed software is correctly entered in the Software Vital Product Database (SWVPD), by using the lppchk command. To verify that all filesets have all required requisites and are completely installed, type the following:
```
# lppchk -v
```
Check that your hardware microcode is up-to-date.
Ensure that all requisite hardware, including any external devices (such as tape drives or CD or DVD-ROM drives), are physically connected and powered on. If you need further information, refer to the hardware documentation that accompanied your server.
Use the errpt command to generate an error report from entries in the system error log. To display a detailed report, type the following command:
```
# errpt -a
```
Ensure that adequate disk space and memory are available. For additional release information, see the AIX Release Notes that correspond to the maintenance level that you are installing.
Make a backup copy of your server software and data. For instructions on how to create a system backup, see Creating system backups.

You can perform the update procedure either using the SMIT interface or the command line. Use one of the following sets of instructions, depending on whether you are using the SMIT interface or the command line:

Step 2. Perform the update procedure using the SMIT interface

Insert the AIX maintenance level CD into the CD-ROM or DVD device.
Type smitty update_all at the command line.
Type or select the input device that contains the AIX maintenance level CD, and then press Enter.
Type or select values in all entry fields, and then press Enter.
When you press Enter to start the installation, the COMMAND STATUS panel is displayed. As the installation proceeds, a series of messages is displayed. The amount of time that the installation takes varies depending on your server and the software that you are installing and updating.

When the installation is complete, the panel returns to the top of the list of messages that are displayed during installation. The Command: status field on the COMMAND STATUS panel changes to OK or failed. OK indicates that the installation ran to completion, although some filesets might not have installed successfully. The failed status means that there was a problem with the installation. Although a preview installation always finishes with an OK status, always check the summaries.
Press F10 (or Esc+0) to exit SMIT.
Review the smit.log file (/smit.log or /home/user_id/smit.log).
Remove all installation media for the maintenance level from the drives.
When you are directed, restart your server by typing the following command:
```
# shutdown -Fr
```

Step 2. Perform the update procedure using the command line

Use the install_all_updates command to install all installp updates on the /dev/cd0 device and to verify the current recommended maintenance level:
```
# install_all_updates -d /dev/cd0
```
Remove all installation media for the maintenance level from the drives.
When you are directed, restart your server by typing the following command:
```
# shutdown -Fr
```

For more information about the install_all_updates command, see the install_all_updates command in the AIX Commands reference.

Step 3. Verify server configuration after installation

After the update procedure is complete and AIX has been restarted, verify the server configuration, as follows:

Verify that all currently installed software is correctly entered in the Software Vital Product Database (SWVPD), by using the lppchk command. To verify that all filesets have all required requisites and are completely installed, type the following:
```
# lppchk -v
```
Use the errpt command to generate an error report from entries in the system error log. To display a detailed report, type the following:
```
# errpt -a
```