About

Hi!

This is just another programmer personal blog. It contains various interesting things from information technologies world, which I would like to share with you, such as:

and others

Read, comment, criticize or thank, if you find something useful.

You’re welcome!

About distribution, hashing and target segment number calculation in GPDB 5x.

In GPDB 5x, table’s data can be distributed RANDOMLY or by set of columns. The essential parts of column-based distribution… Read more…
Running QEMU VM with the latest kernel inside 2.6 OpenVZ container.

There are many of cheap NAT OpenVZ VPSes on market. However, OpenVZ virtualization has certain limitations and comes with old… Read more…
nDPI as iptables module(ndpi-netfilter) on Orange PI.

There are many OpenDPI based implementations and their versions. There are many ndpi-netfilter implementations and versions too. But I found… Read more…
Oracle DB. Changing and fixing query execution plan using dbms_spm.

Oracle Query Optimizer generally works well, but sometimes it makes your fast and polished queries slow down. Often, you can… Read more…
Oracle DB. Using dbms_alert for queuing and parallel data processing.

Oracle has an interesting package to provide an event-based logic named dbms_alert. In this article I will use it to… Read more…