Articles written by Philip Yuson

The IMS Explorer has just been released for GA by IBM. It is free for download and works under Eclipse.

Nov 11, 2011 - Philip Yuson

MVS has a facility that allows you to keep versions of a file. This facility is called Generation Data Groups (GDG).

Jun 7, 2011 - Philip Yuson

The Job Entry Subsystem (JES) manages jobs within an MVS system. This article discusses the various stages in the lifecycle of a job.

Feb 15, 2011 - Philip Yuson

Resource Access Control Facility (RACF) is an system software that controls security on an IBM mainframe. This article gives some basic concepts.

Feb 5, 2011 - Philip Yuson

IMS is a transaction manager and database system for the mainframe. This article provides a brief overview of the transaction manager.

Jan 7, 2011 - Philip Yuson

Information Management System (IMS) is a database and transaction management system for IBM mainframes. This article gives a basic overview of IMS Databases

Dec 20, 2010 - Philip Yuson

This article explains how MVS starts up. It also discusses started tasks, JES and the master console, all critical components within MVS

Dec 2, 2010 - Philip Yuson

Mainframe batch processing requires a job. Jobs are created using Job Control Language (JCL). What is in a JCL? How can you use it?

Nov 26, 2010 - Philip Yuson

The mainframe disk file system is very different from the Windows and *NIX file systems. Read on to find out.

Nov 20, 2010 - Philip Yuson

There are two types of mainframe processes: Batch Processing and Online Transaction Processing. Read this article to find out what these are.

Nov 6, 2010 - Philip Yuson

Read this article and find out why OpenOffice.org can stand on its own compared to more expensive office suites.

Nov 6, 2010 - Philip Yuson

Unknown to many, mainframe machines are still here to stay. While we work on Windows and *NIX systems, the mainframe still is king.

Oct 22, 2010 - Philip Yuson