db5 error(11) from dbenv->open: Resource temporarily unavailable when doing dnf install

If you are having an issue similar to this message

error: db5 error(11) from dbenv->open: Resource temporarily unavailable

The issue is likely due to a locked or corrupted database caused by an interrupted dnf process

Step 1: Remove RPM Database Locks:

			
# cd /var/lib/rpm
# rm -force __db.*

Step 2: Rebuild the Database

# rpm --rebuilddb

Step 3: Clear all cache data to remove inconsistencies

# dnf clean all

References:

Important Repository for Rocky Linux 9

Install dnf-plugins-core

# dnf install dnf-plugins-core

Install epel-release

# dnf install epel-release

Install PowerTools Replace (Now known as Container Runtime Builder CRB)

# dnf config-manager --enable crb

Check for Repositories that are enabled

# dnf repolist all --enabled

List all the Repositories

I was trying to install hdf5 after enabling EPEL. Installing EPEL

% dnf install -y epel-release
% dnf config-manager --set-enabled PowerTools
Error: No matching repo to modify: PowerTools.

I’ve noticed this documentation from CentOS-8 Repoid, there are name changes from Yum_repo_file_and_repoid_changes from 8.3 onwards. The documents can be found at https://wiki.centos.org/Manuals/ReleaseNotes/CentOS8.2011#Yum_repo_file_and_repoid_changes

% dnf config-manager --set-enabled powertools