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#!/bin/bash
LINKDIR=/usr/bin
JHOME=/usr/java/latest
JREDIR=$JHOME/jre/bin
JDKDIR=$JHOME/bin


sudo alternatives --install $LINKDIR/java java $JREDIR/java 20000  \
  --slave $LINKDIR/keytool     keytool     $JREDIR/keytool         \
  --slave $LINKDIR/orbd        orbd        $JREDIR/orbd            \

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# Call `setup_ssh_socket` to setup the control socket (function will return once
# the socket is ready to go), and `ssh_target` will connect using the control socket.
# Assumes TARGET_HOST variable is set.
# The connection is automatically closed when the script exists.
# TARGET_HOST="wolever.net"
# setup_ssh_control_socket
# ssh_target "hostname"

debug() {
    echo "DEBUG: $*"

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create role ME_ROLE;

grant
  create materialized view,
  create session,
  alter session,
  create table,
  create indextype,
  create sequence,
  create synonym,

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Comment ouvrir les ports JMX remote à chaud

Copied from : http://blog.alexis-hassler.com/2015/06/ouvrir-jmx-remote-chaud.html

Pour permettre un accès distant au MBeans d'une JVM Oracle ou OpenJDK, il faut la démarrer avec la propriété com.sun.management.jmxremote.port, plus quelques autres propriétés détaillées sur JTips.

java -Dcom.sun.management.jmxremote.port=1099 fr.sewatech.myapp.MyMain

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import javax.management.MBeanServer;
import javax.management.MBeanServerConnection;
import javax.management.remote.*;
import java.io.IOException;
import java.lang.management.ManagementFactory;

/**
 * Utilitarian/commodity class to allow easy JMX testing by setting up a loopback connection
 * by wrapping the logic of a {@link JMXConnectorServer}.

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/**
 * Copyright (c) 2011 Red Hat, Inc.
 *
 * This software is licensed to you under the GNU General Public License,
 * version 2 (GPLv2). There is NO WARRANTY for this software, express or
 * implied, including the implied warranties of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
 * along with this software; if not, see
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *

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/**
 * Copyright (c) 2011 Red Hat, Inc.
 *
 * This software is licensed to you under the GNU General Public License,
 * version 2 (GPLv2). There is NO WARRANTY for this software, express or
 * implied, including the implied warranties of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
 * along with this software; if not, see
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *

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Two ways to do it, but only worked for me so I'll put it first and the second for reference:

$ openssl pkcs12 -export -in hostname.crt -inkey hsotname.key -out hostname.p12
$ openssl pkcs12 -in hostname.p12 -nodes -out hostname.pem

Other options for this method in comments below:

# Note, the -certfile root.crt appends all CA certs to the export, I've never needed these so it's optional for my personal steps
$ openssl pkcs12 -export -in hostname.crt -inkey hsotname.key -certfile root.crt -out hostname.p12

Note, I've always had my hostname.crt as part of my .pem, so I keep my certs but apparently you may not have to, hence the nocerts flag being an extra option in this sample

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Codebreaker

Implement a simple program that match the requirements below.

The game

Code breaking is all about finding the secret code.

When the game starts the player should be able to guess the secret code by providing a 4 digits number. The game finishes when the player have found the exact match for the secret code.

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public class CacheSizing {
    public static final int _10_MEGABYTE = 10_000_000;
    // The type Value is a Value Object whose max size is known, that is :
    //  - no string with "unbounded" variable length
    //  - no Collection with any size

    @Test
    public void possible_cache_size_value() {  
        int possible_cache_size_per_server = 10_000;
        LoadingCache<String, Value> c = CacheBuilder.newBuilder()