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Firebird Performance Tour 2019 – Prague

Ivan Revelli

Tuesday 4 December 2018, 12:21

Synaptica has always adopted Firebird as its main database environment for the realization of many solutions from embedded iot products to Web solutions with thousands of daily accesses.

Firebird proved to be a great tool, flexible and easy to manage. For this reason we could not miss the appointment to meet the creators (Dmitry Yemanov, Dmitry Kuzmenko, Alexey Kovyazin) and have the latest news on the future of this wonderful RDBMS.

During the conference we talked about:

The future of Firebird and the new features that will be introduced in version 4.x
How to optimize firebird performance simply at the SQL level by evaluating its impacts on the execution algorithm.
Visions on the live-replication system that allows you to create live replicas of your database

Seizing the opportunity we have pututo to visit a really beautiful city (Prague).

mde

dav

dav

smartFB a free tool for Interbase & Firebird

Ivan Revelli

Wednesday 31 October 2018, 22:48

ivan.revelli@synaptica.info

SmartFB is a free SQL client for Interbase and Firebird made for internal / educational use.
As we think it will be useful we decided to make it available for download.

It is in “beta” version, but I think it could be useful, so you can download it from the following links:

– Download Windows 32bit Installer
– Download portable version

Firebird 3.0 & Ubuntu Server 18.04

Ivan Revelli

Monday 29 October 2018, 20:13

ivan.revelli@synaptica.info

Primo test di porting database alla versione Firebird 3.0 che è la versione ufficialmente afficancata ai pacchetti di distribuzione standard di Ubuntu nella versione LTS attuale 18.04.

Le differenze tra la versione 3.0 di FB e le precedenti sono moltissime.
Ma i passaggi sono abbastanza semplici per effettuare il porting dalle versioni precedenti alla attuale e consistono in :

1) Preparare il nuovo ambiente FB 3.0 su una macchina nuova
2) Configurare firebird.conf in modo che risponda in rete sul nuovo sistema
2.5) *Abilitare la connessione “legacy” a firebird (quella vecchia senza crittografia) per non dover modificare i programmi già realizzati
3) Effettuare il bk dei DB e trasferirli sul nuovo sistema e Eseguire il restore dei DB con il solito “gbak”
4) veriufica se funziona da remoto Divertiti con FB 3.0

Sorgenti di info importanti per procedere:

io ho usato anche lo ozioni -username e -password esplicitate in chiaro nel comansdo gbak

1) Prepara il nuovo ambiente

https://help.ubuntu.com/community/Firebird3.0

2) Configurare firebird.conf in modo che risponda in rete sul nuovo sistema

https://superuser.com/questions/814879/firebird-cant-connect-to-host

You have to edit file “/etc/firebird/3.0/firebird.conf” and comment the line:

RemoteBindAddress = localhost
Like this

#RemoteBindAddress = localhost

2.5) *Abilitare la connessione “legacy” a firebird (quella vecchia senza crittografia) per non dover modificare i programmi già realizzati

https://firebirdsql.org/file/documentation/release_notes/html/en/3_0/rnfb30-compat-legacyauth.html
https://firebirdsql.org/file/documentation/release_notes/html/en/3_0/rnfb30-compat-legacyauth.html

guide varie consultate sullo stesso argomento:

https://ptfrontline.wordpress.com/2016/04/21/steps-to-upgrade-firebird-v2-5-x-to-version-3-0-0-on-windows/

3) Effettuare il bk dei DB e trasferirli sul nuovo sistema e Eseguire il restore dei DB con il solito “gbak”

bk restore dei DB :

https://firebirdsql.org/manual/gbak-recipies.html
https://www.firebirdsql.org/manual/gbak-restore.html

tux> # Backup the database.
tux> gbak -backup employee /backups/employee.fbk

tux> # Restore the database.
tux> gfix -shut -tran 60 employee
tux> gbak -replace /backups/employee.fbk employee

tux> # Backup the database.

tux> gbak -backup employee /backups/employee.fbk

tux> # Restore the database.

tux> gfix -shut -tran 60 employee

tux> gbak -replace /backups/employee.fbk employee

4) veriufica se funziona da remoto Divertiti con FB 3.0

verifica se la porta di FB è presente tra le porte in ascolto del nuovo sistema:

sudo netstat -plnt

1	sudo netstat -plnt

verifica se FB3 sta girando:

ps ax | grep firebird

1	ps ax \| grep firebird

prima connessione in locale con “isql-fb”

https://www.firebirdsql.org/pdfmanual/html/isql-commands.html

List of all selected checkboxes into a JSON string

Simona Marotto

Thursday 11 October 2018, 20:45

simona.marotto@synaptica.info

Add class to checkbox

<div id="checkboxList">
    <div><input type="checkbox" value="1" class="myChk"> Value 1</div>
    <div><input type="checkbox" value="2" class="myChk"> Value 2</div>
    <div><input type="checkbox" value="3" class="myChk"> Value 3</div>
    <div><input type="checkbox" value="4" class="myChk"> Value 4</div>
    <div><input type="checkbox" value="5" class="myChk"> Value 5</div>
<div>

<div><input type="checkbox" value="1" class="myChk"> Value 1</div>

<div><input type="checkbox" value="2" class="myChk"> Value 2</div>

<div><input type="checkbox" value="3" class="myChk"> Value 3</div>

<div><input type="checkbox" value="4" class="myChk"> Value 4</div>

<div><input type="checkbox" value="5" class="myChk"> Value 5</div>

<div>

Create a function to return a JSON string

function arrayChk(){ 

    var arrAn = [];  
  
    var m = $('.myChk'); 

    var arrLen = $('.myChk').length; 
      
    for ( var i= 0; i < arrLen ; i++){  
        var  w = m[i];                     
         if (w.checked){  
          arrAn.push( { "myVal" : w.value } );  
          console.log(w.value ); 
        }  
      }   
    
    var myJsonString = JSON.stringify(arrAn);  //convert javascript array to JSON string
    console.log( 'result' + myJsonString);
    
    alert(myJsonString);

    return myJsonString;
  
   }

function arrayChk(){

var arrAn = [];

var m = $('.myChk');

var arrLen = $('.myChk').length;

for ( var i= 0; i < arrLen ; i++){

var w = m[i];

if (w.checked){

arrAn.push( { "myVal" : w.value } );

console.log(w.value );

}

var myJsonString = JSON.stringify(arrAn); //convert javascript array to JSON string

console.log( 'result' + myJsonString);

alert(myJsonString);

return myJsonString;

}

Here an example

https://jsfiddle.net/a3owjh85/1/

Syncronize date time with internet service with Ubuntu 18.04

Ivan Revelli

Sunday 30 September 2018, 17:57

ivan.revelli@synaptica.info

Setting date time daemon and timezone of my locale on my ubuntu 18.04 servers:

Install NTP daemon:

   sudo apt install ntp

1	sudo apt install ntp

Configure your locale time zone by checking the list:

   timedatectl list-timezones

1	timedatectl list-timezones

In my case:

   sudo timedatectl set-timezone Europe/Rome

1	sudo timedatectl set-timezone Europe/Rome

Welcome VR6 @ Synaptica Farm

Ivan Revelli

Wednesday 18 July 2018, 16:47

ivan.revelli@synaptica.info

Welcome to VR6 @ Synaptica Farm

VR6 is a fully customized Dell R740XD dual Xeon performance server for high performance in the KVM Virtualization System.

Higher performance less core (on 18 per processor) more frequency (plus 3Ghz) memory RDIMM ECC 2666GHz … less virtual machine but faster.

Why VR6? Each production server in Synaptica has VR in the name because the name of our first server that implements virtualization was VR “Virtual Runner”.