kekru

Verbindung mit dem VPN der FH Dortmund aufbauen unter Ubuntu

sudo apt-get install -y openconnect iptables expect
sudo openconnect vpngate.fh-dortmund.de

kekru

#DB2
##Create drop statements for all tables:
select 'drop table '||rtrim(tabschema)||'.'||rtrim(tabname)||';' from syscat.tables where tabschema = 'MYSCHEMA';

#Oracle ##Delete all sequences and tables http://stackoverflow.com/questions/2549718/dropping-all-user-tables-sequences-in-oracle

BEGIN

kekru

Docker useful commands

Stop and remove all running containers:
docker stop $(docker ps -aq) && docker rm $(docker ps -aq)

Remove all stopped containers:
docker rm $(docker ps -aq)

Remove untagged/dangling/<none> images
docker rmi $(docker images -q -f dangling=true)

kekru

Hibernate 4 introduced a new Audit API for event listening.
org.hibernate.envers.event.AuditEventListener was replaced by org.hibernate.event.spi.*, for example org.hibernate.event.spi.PostDeleteEventListener.

First create your custom listener. Example: You want do disable auditing for delete operations.

import org.hibernate.envers.event.spi.EnversPostDeleteEventListenerImpl;
import org.hibernate.event.spi.PostDeleteEvent;

public class MyAuditListener extends EnversPostDeleteEventListenerImpl {

kekru

This is how to easily setup an Oracle XE DB in a Virtual Machine that is accessible via localhost:1521. So you don't have to install Oracle XE locally, but inside a VM.
We use VirtualBox, Vagrant and Docker for that.

First install VirtualBox https://www.virtualbox.org/wiki/Downloads
and Vagrant https://www.vagrantup.com/downloads.html

Run vagrant version to check that vagrant is correctly installed.

Save the Vagrantfile from this gist to a local directory.