IT Traveller: #Failed airport #technology (Istambul)

By | January 11, 2018

I travel quite often across the world for job related purposes. Being an IT guy that does servers installations, develops and deploys enterprise software across the world I am always noticing everything that is IT related. It is always fun to see failed tech in airports I transit or in hotels where I stay. This… Read More »

#WordPress weather map plugin attack detected in #wordfence live traffic

By | January 10, 2018

Going through my Wordfence live traffic view is a nice way to see the daily fad of Chinese script kiddies. WordPress is one of the main targets of people trying to access your data. Obviously if you have a blog you must be sure you run an A+ certified security setup. See my other posts… Read More »

Map #Docker container ports to virtual IPs in Linux with docker-compose

By | February 15, 2018

Sometimes you need to export multiple instances of the same service with a specific IP using same port outside of a docker swarm environment. Using docker swarm environment is easy to have several instances of the same service exporting some API on the same port. The swarm will take care of load balancing the services… Read More »

Using temporary indices to optimize DELETE operations on big tables in #DB2

By | December 18, 2019

DELETE operations are much faster in case we disable constraints. This is because not all foreign keys affected by the DELETE are indexed. We have to detect all the foreign keys that point to the table from where you delete data. The we can create temporary indices to help speed up the delete. STEP 1.… Read More »

Optimizing DELETE operations on big tables in #DB2

By | November 21, 2017

Deletes go very slow if the log buffer size is too small and we delete lots of data from big tables. It is very important to have the right settings for log buffer size to avoid having to frequent writes to the disk, writes that cause a high IO traffic that will slow down the… Read More »

Fix #DB2 SQL1639N ( SQLCODE=-1639, SQLSTATE=08001, SQLERRMC=null) authentication issue

By | November 21, 2017

After migrating my full DB2 backup (binaries and data) to a new server I got into several issue. One was already described in the previous post here. ISSUE: Even after fixing that start issue I was still not OK. My WebSphere data source that linked to the DB2 instance was not responding. Trying to ping… Read More »

Fix #DB2 Communication protocol failed to start issue: SQL5043N

By | November 21, 2017

I moved my DB2 installation to a new server from a full back-up. After performing all the necessary steps: 1. Recreate the necessary users: db2inst1, db2fenc1, db2das1 2. Give ownership to their home directories ISSUE: I tried to start the instance. I logged in to the db2inst1 user and started the database. This was the… Read More »

Automatic remote backup using cron and #OwnCloud

By | November 26, 2017

Setting up a backup is important and at the same time the most neglected task. One quick solution for a remote backup is using OwnCloud. If you already have your OwnCloud server or just an account the following short steps can be done. STEP 1: Gather your data Lets gather the data to be back-ed… Read More »