Open ports of Centos 7 in a Virtual Machine over VirtualBox

Recently I have to configure my virtual machine to get some ports exposed in the network using a virtual box for publish, there are only two steps that resolve my problem:

Step 1:  Add port to firewall configuration
1.1. Execute: $ sudo firewall-config
1.2. Add the tcp ports required on ports tab

Step 2: If you have a configuration with NAT network you have to execute the next command according to your machine:
$ VBoxManage modifyvm "dev_centos" --natpf1 "tomcat,tcp,127.0.0.1,<port>,10.0.2.15,<port>"

Best Regards,

The design of a Event-Driven Architecture on Sedgewick Algorithms Book

Hace algunos años atras un equipo en el Servicio de Administración Tributaria diseñamos una aplicacion llamada Planificador de procesos que despues intento ser una Rejilla de planificación, dicha aplicación maneja procesamiento de 10 declaraciones por segundo (procesamiento en lotes), sus ultimas versiones tendian a manejar una arquitectura basada en eventos en lo cuál dentro de su interfaz manejaba terminos como configuración de particula ya que intentaba idealizar el concepto de particulas en tareas de planificación en base de control por el tiempo, hace poco encontré en el libro de algoritmos de Sedgewick el diseño de como elaborar una arquitectura mas funcional y responsable pero guardando el mismo concepto de una aplicación de 'Planificación de procesos':

1. Las particulas tambien son parte del diseño:

Algorithms event driven architecture, particle

A photo posted by Octavio Sanchez Huerta (@osanchezha) on May 22, 2016 at 11:36am PDT

2. Rejilla de planificación en versiones posteriores de la aplicación

Algorithms, event driven, cube

A photo posted by Octavio Sanchez Huerta (@osanchezh) on May 22, 2016 at 11:35am PDT

3.La siguiente evolución un hermoso diamante:

Algorithms, event drive architecture, diamond

A photo posted by Octavio Sanchez Huerta (@osanchezh) on May 22, 2016 at 11:32am PDT

Best regards,

Useful MQSC scripts for IBM Message Queue (Part I)

I have been caught by the time, after some years ago, my knowledge of configuration of IBM Message Queue is not being in practice because spending 2 hours trying to configure Channel Security the remembrance of how doing it stuck me.

I have decided to conserve some memories of script of configuration and this is the first part.

1. Backup and recovery script:

2. Remove security to the channel

Important Links:

• https://www.ibm.com/support/knowledgecenter/en/SSFKSJ_8.0.0/com.ibm.mq.adm.doc/q117770_.htm

Best regards,

Possible solution for 'ISAM error: key value locked' on Informix tables

Recently working on transactional container may me found some exception described as following:


Having a configuration on Spring jdbc I did saw that my transaccional configuration was for read-only on true value so I have to change the configuration like this:

@Transactional(value = "XXXXTransaccionManager", readOnly = false, propagation = Propagation.REQUIRED, timeout = 6000,isolation = Isolation.READ_COMMITTED)

By now my problem was solved, I have remembered having same problem in Oracle by mistake I forget to make that variable true on insert and updates.

Update 1 (25/05/2016)
Rounding on Internet I found  'ISAM error: key value / record is locked using transaccional enviroments is relative to Database lock following there is a explination of the problem:
http://informix-technology.blogspot.mx/2006/10/when-exclusive-is-not-really-exclusive.html
http://informix-technology.blogspot.mx/2012/11/its-errors-stupid.html

Here is a explanitation of IBM documentation: 
http://www.ibm.com/support/knowledgecenter/SSGU8G_12.1.0/com.ibm.sqls.doc/ids_sqs_1171.htm

The solution to the problem should be SET LOCK MODE WAIT or LOCK MODE in table, this resolution was only for a transacctional enviroment, please be free to make a revision of log file in database to check if this is the solution to your system.

Best regards,

Missing libraries on installation of IBM Message Broker and Message Queue (Part I)

I am going back to IBM Message Queue and Message Broker, after some years, returning to old school, I have decided to publish this time some memories of working around and by now the following libraries are required to install the ibm middleware on a Centos 7 Machine:

  Best regards,

How to solve artifact not found by maven?

Recently I have to chance settings.xml configuration quickly for download from different repositories after compiling I have received the following error:

"was cached in the local repository, resolution will not be reattempted until the update interval of" "has elapsed or updates are forced"

The solution to this problem is remove some keys and blueprint of artifact that were downloaded from different sites: 

find ~/.m2/ -name "*.lastUpdated" | xargs rm

find ~/.m2/ -name "*.sha1" | xargs rm 
find ~/.m2/ -name "*.repositories" | xargs rm 

Best Regards,