Mainframe, MVS and zOS Discussion

QSAM stands for Queued Sequential Access Method. This is an extended version of the basic sequential access method (BSAM). When this method is used, a queue is formed of input data blocks that are awaiting processing or of output data blocks that have been processed and are awaiting transfer to auxi...

BSAM is Basic Sequential Access Method. This is an access method for storing or retrieving data blocks in a continuous sequence, using either a sequential access or a direct access device. BSAM is available on OS/360, OS/VS2, MVS, z/OS, and related high-end operating systems. In BSAM, "basic&qu...

Basic Direct Access Method (BDAM) arranges records in any sequence your program indicates, and retrieves records by actual or relative address. If you do not know the exact location of a record, you can specify a point in the data set where a search for the record is to begin. Data sets organized th...

The IMS/DC (Data Communications) system provides users an online "real time" access to information in IMS databases. MPP transaction programs are NOT submitted with OS JCL. The On-line IMS Control Region automatically schedules the MPP program necessary to process a transaction. IMS/TM, fo...

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OOCobol is Object Oriented Implementation of COBOL. COBOL Object Orientation and associated capabilities provides facilities for developing object-oriented programs using the COBOL programming language. These facilities are currently part of a proposal[Obi94] to extend standard COBOL as the result ...

OpenCOBOL is an open-source COBOL compiler. OpenCOBOL implements a substantial part of the COBOL 85 and COBOL 2002 standards, as well as many extensions of the existent COBOL compilers. OpenCOBOL translates COBOL into C and compiles the translated code using the native C compiler. You can build you...

http://www.itnews.com.au/News/239155,micro-focus-looks-to-revive-cobol-skills.aspx?goback=%2Egmp_719467%2Egde_719467_member_241628886" onclick="window.open(this.href);return false; If the link does not open: British software company Micro Focus plans to partner with Indian universities to ...

While Google Glass is currently being viewed as a consumer technology, IT shops and mobile workers are likely already champing at the bit to be able to use a hands-free technology to do their jobs. "The same way that tablets followed smartphones into the enterprise on the backs of employees be...

This section on File-Aid Tips provides examples of File-AID control cards that solve specific problems. We try to organized example here as follows: State the problem Show the control cards required and the JCL However, as multiple members can post in here - the above order might distort in between....

The word "Tips" sounds appropriate for this part of the Forum if not the perfect way to convey what this Section of the Forum is all about. I wanted to have a single place where in I can place all the "Small Things" about COBOL, JCL, DB2, VSAM, ISPF, SDSF and get the contribution...

The simple answer is No. COBOL is a language developed for the Business Programs' Development and not for developing Operating Systems.

If you are interested in developing Operating Systems - C, C++ can be your choices among many others.

A funny story. A U. S. Marine was deployed to Afghanistan. While he was there, he received a letter from his girlfriend. In the letter, she explained that she had slept with two guys while he had been gone and she wanted to break up with him. She also wanted the pictures of herself back. So, the Mar...

Three women die together in an accident and go to heaven. When they get there, St Peter says, "We only have one rule here in heaven: Don't step on the ducks!" So they enter heaven and sure enough there are ducks all over the place. It is almost impossible not to step on a duck, and althoug...

The CBT tape is a collection of freeware distribution for the IBM mainframe MVS and OS/390 operating system environment. The entire collection of free software can be downloaded at the site as well as freeware for JES2, JES3, and other related S/390 material. A large repository of links to S/390 rel...

1. If you are in a ISPF Screen and want to know in which TSO Region ( Development,Production, or other TSO regions) you are now, try this:

• Issue on the command line : SAREA
  ISPF STATISTICS Pop-up window will show you the region and other info too.

1. Using below refer-back one can execute a program from any other library:

1. Do you know how COBOL Compiler finds a data-set as VSAM data-set? When the ORGANIZATION clause is coded for a file, the COBOL compiler interprets it as a VSAM data-set. Hence, the ORGANIZATION clause should not be coded with a non-VSAM data-set.

1. CICS, DB2, IMS can process records in existing VSAM data-sets but can't create the data-set. Even you can process VSAM data sets in COBOL programs only after you create them with access method services.

z390 is open source Java and the latest version can be downloaded from http://www.z390.org" onclick="window.open(this.href);return false;. It comes with GUI and command line interface, documentation, demo programs, and optional regression test programs. Once z390 is installed, you can asse...