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How to pass-through RNDIS USB dongle from host to virtual machine.

Simply passing of USB device to qemu virtual machine usually works well. I had no troubles passing most of devices,… Read more…
“Buffer I/O error on dev sr0, logical block 0, async page read” when using USB dongle

A while ago a faced a problem with USB modem. There were tons of similar error messages during boot and… Read more…
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…
DBMail over PostgreSQL + Postfix + SASL on Debian. Part 1. Introduction.

Databases are bad for email. Howbeit, sometimes you really don't need fast mailing system, but want to use an existing… Read more…
Oracle DB. Advanced Queuing. Simple subscriber example.

In this article I will show you how to create Oracle queues, pull messages and push them using subscriber. Before… Read more…