Parallels Plesk Panel 9.5.4
CentOS release 5.5 x686
Upgrade to 11.5.30 version failed with error in
Components validation detected at least one important issue: Parallels Panel pre-upgrade check... /usr/bin/sw-engine: error while loading shared libraries: libpq.so.4: cannot open shared object file: No such file or directory Proceeding with installation or upgrade without resolving the issues that were found can corrupt your data.
Failed package dependencies.
To find out the required package run the command:
# yum provides /usr/lib/libpq.so.4 | grep -B2 base Loading mirror speeds from cached hostfile * addons: mirror.switch.ch * base: mirror.switch.ch -- postgresql-libs-8.1.23-6.el5_8.i386 : The shared libraries required for any : PostgreSQL clients. Repo : base
and install the required package:
yum install postgresql-libs-8.1.23-6.el5_8.i386
Now you can proceed the Plesk upgrade.