Recent updates include:
- Where's the Swami gone and what's he doing?
Handouts from The Swami's presentations at recent WAVV meetings
The Swami's Services page
The Swami's VSAM Class page
The Swami's Q and A pages, including the Q and A home page and pages relating to VSAM disk space allocation
What's this site about, anyway?
- What's VSAM?
- VSAM, the Virtual Storage Access Method for IBM's VSE/ESA
operating system provides file system utilities and application programming
interfaces to define, optimize and use data stored on Direct
Access Storage (disk) subsystems. VSAM is used for
both batch and on-line programming systems,
by thousands of IBM mainframe systems and millions of users of
- What's VSE?
- The IBM VSE/ESA Operating System is in use by thousands of customers
with millions of users worldwide. It meets the host computing needs of
these customers and users with high performance transaction processing,
client-server, and efficient batch processing for these users.
- What's CICS?
- CICS, the Customer Information Control System,
is a comprehensive terminal monitor system used in
most IBM mainframe computer systems to manage system resources
needed to provide "industrial strength" reliability, availability,
and stability for on-line, interactive computer systems. Literally
many millions of business users use CICS supported systems daily.
- The Swami's Qs & As
- The Swami of VSE/VSAM provides Question and Answer services about the usage
of VSAM and CICS in the VSE/ESA environment.
- The Swami's Performance Consulting Services
- The Swami can provide remote (that is, telephone, e-mail, etc.) and on-site
performance and availability consulting services ranging from "performance
checkups" to detailed tuning recommendations.
He can assist you and your staff to ensure that your on-line
and batch subsystems best meet the needs of your business.
- Benefits of putting the Swami's experience to work for you
- Typical environments have seen 20 to 40 percent reduction in CPU and
I/O activity for critical jobsteps and on-line transactions. Although
individual results will vary, the reductions in system resource load make more capacity available for other system needs immediately.
- Education in VSAM use, including
design and tuning
- The Swami, in conjunction with CPR Systems, offers
a comprehensive class in the design and tuning of file systems and applications using
VSAM. Find out
more about this class and
when and where it will be offered.
- Who is this Swami of VSAM?
- The Swami of VSE/VSAM is Dan Janda, who has been working with VSAM
in IBM laboratories and the real world for over 30 years. He has been
a frequent speaker on VSAM, VSE, CICS, and performance topics at WAVV,
GUIDE, CMG and other meetings around the world. You are visiting his
web site at