LinuxHostingSupport

You see a “Unable to install the psa-backup-manager” error while installing Plesk control panel on a Linux server and it is because of the incomplete db4 packages needed for embedded database support for various applications. The complete error message looks like:

Determining the packages that need to be installed. ERROR: Unable to
install the "psa-backup-manager-9.x.x-cos5.buildxxxxxxx.00.i586"
package. Not all packages were installed.

Solution:

Check if the required db4 packages are installed by executing:

# rpm -qa | grep db4

It will list the db4 packages. If the db4-devel and db4-utils are missing from the above output, install the packages using yum

# yum install db4-utils
# yum install db4-devel

That’s it. You can start the Plesk installation once again and it will install the psa-backup-manager successfully.