Host

#cd /usr/lib64/nagios/plugins
- create script with EXIT 0/1/2  ie "check_raid_disks"
#nano /etc/nagios/nrpe.cfg
- define command[check_raid_disks]=/usr/bin/sudo /usr/lib64/nagios/plugins/check_raid_disks

Abstract

When users login they get a temporary 'nobody' session with a few populated variables (or many if you have public translations or custom values), after login user gets an assigned session id and starts populating WWV_FLOW_DATA with item values.

Problem

If not maintained WWV_FLOW_DATA explodes and performance degrades.
I suspect that session idle setting is not working in Apex 3.2, tested many settings and checked Apex tables - nothing changes no matter what the settings are. Sessions pile up during the day, default cache purge procedures only allow cleaning up old sessions by date, not by idle period. Thus I can only run it at night or not at all (if environment gets international).

Abstract

While working with Apex I was building, backing up, customizing applications. I also had a few custom themes, theme-rebuilds. Now I need to update interfaces for 22 applications. Update includes custom CSS, JS'es, styles and HTML customizations for regions, region sources, templates, items, buttons. My applications contain hundreds of regions and items, its time to start digging Apex internals. Some of them can be found documented in forums, some of them I was not able to locate.

Warning

Any mistype or abuse may damage Apex IDE, usability, upgradability and your own application sources. Consider yourself warned.

General remarks

Abstract

Drupal version 7, objective is to improve both Desktop and mobile versions of your website, improve SEO ratings like page loading speed, text to HTML ratio, number of CSS files, Javascript footprint size, overall page footprint size, number of files to load.

Improvement process

Drupal is module based CMS, so you are going to need only a couple of modules added to your installation. Each module and its use follows. Hopefully this article will be updated quite a few times.

PHP filter + Browscap

There are a couple of Drupal modules that allow hiding content based on device size (mobile or desktop). Tried quite a few Mobility modules, but none of them seem to work, where old or required modules like Cache to be turned off. And its not what I wanted.

Objective

Use Text Fields or Text Area fields for text input to build a document template generator. Oracle Apex version 4.

Problem(s)

PROBLEM

Recent ImageMagick update kicked a little in the nuts. I mainly convert PDF to PNG and then use them for OCR. Here is how it welcomed me after an update to 6.7.2:

sh: gs: command not found
convert: missing an image filename

Abstract

The SHA-1 cryptographic hash algorithm has been known to be considerably weaker than it was designed to be since at least 2005. As part of their SHA-2 migration plan, Google, Microsoft and Mozilla have announced that they will stop trusting SHA-1 SSL certificates. Google will begin phasing out trust in SHA-1 certificates by the end of 2014, while Microsoft and Mozilla will begin phasing out trust for SHA-1 certificates in 2016.

Problem(s)

“When you write a program for Android, you use the Oracle Java tools for everything, and at the very end you push a button and say, ‘Convert this to Android format.'” - Larry Ellison, 2013, CBS interview.