Recovering from Currepted RPM Database

RPM Package
(Image Source: https://www.taringa.net/posts/linux/16751463/Crear-repositorio-de-paquetes-RPM-fedora.html)

I had to interrupted the DNF command in my Fedora 27 Workstation at very initial state. This ended up with corrupting RPM database with following output.

[root@localhost ~]# dnf update -y
error: rpmdb: BDB0113 Thread/process 2779/140691506923328 failed: BDB1507 Thread died in Berkeley DB library
error: db5 error(-30973) from dbenv->failchk: BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery
error: cannot open Packages index using db5 -  (-30973)
error: cannot open Packages database in /var/lib/rpm
Error: Error: rpmdb open failed
[root@localhost ~]#

I used following commands to resolve issue.

Step 1: Move the corrupted database

[root@localhost ~]# mv /var/lib/rpm/__db* /tmp/
[root@localhost ~]#

Joomla Error 500 Workround/Fix for 3.7.5 to 3.8.0 Update

Today I updated Joomla to version 3.8.1 from from the 3.7.5 version. Update method I used was, downloading the upgrade zip and extract. 

Result I got was a blank administration page (in blue) and blank web page. 

However I was able to get the site up with following steps:

Note: Make sure to take web root and SQL backup before proceeding. 

Step 1: Apply the 3.8.1 upgrade by unzipping the upgrade zip to web root. (You will see blank pages and blue admin page)

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X-Frame-Options header restricts web page's ability to open in a Frame. Opening in a frame can result a Clickjacking attack which the authentic page is open in a frame a place layer exactly on top of a login section which can capture usernames and passwords.

According to the 'X-Frame-Options response header' reference in Mozilla Developer site, There are three possible values for X-Frame-Options:

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Fedora 20 is released on 17th December 2013. It was shipped with Gnome 3.10. There is a issue with Gnome 3.10 by design. There is no Wired Network Control from Network Manager applet. (GNOME Bugzilla – Bug 708966)