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Mainframe Technology Updates |
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Interrelated Information Technology |
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| Programming Skills Questions | Utilities and Development Tools Questions |
The Computer Education Techniques knowledge base is a service for answering questions, inclusive of the research and validation of the accuracy of information in the public domain. Citation of source documentation and examples are used to provide answers to the questions. Utilization of the information of this service and reliance on the answers, information or other materials received through this web site is done at your own risk.
| Q | What criteria are used for establishing the amounts for the primary and secondary quantity for a dataset that is to be extracted. |
| A | Each track contains approximately 50000 characters. The assumption is that the printout to be extracted has 132 characters on a line. Each track can handle approximately 378 lines (50000/132). It will be necessary to estimate the number of lines in the printout. In EJES, that information is displayed on the right side of the screen on each JOB line. The calculation is rounded up. It is not possible to allocate a half a track or half a cylinder. |
| Q | What architecture mode is supported for guests operating on IBM's z/VM V5, running in 64-bit mode? |
| A | z/VM V5 exploits and supports the z/Architecture, which enables 64-bit capable operating systems (Linux on System z, z/OS, z/OS.e, z/VSE V4, and z/TPF) to be run as guests of z/VM V5 when z/VM V5 is running on a System z platform in 64-bit mode. z/VM V5 also supports guest operating systems running in ESA/390 mode such as z/VSE V3, VSE/ESA, TPF, z/OS, Linux on z/OS, or VM/ESA when z/VM V5 is operating in 64-bit mode. In order for z/OS or z/OS.e to operate as a guest of z/VM on the System z platform, both z/VM V5 and z/OS and z/OS.e must be operating in 64-bit mode. |
| Q | What improvements does IBM's z/VM 5.3 bring to the System z platform? |
| A | Enhancements have been made to
scalability, security, and virtualization technology. This provides for
increased workloads on IBM System z servers and improves its security
capabilities. z/VM V5.3 supports LPARs: larger logical partitions; this
improves scalability required for growth. A single z/VM partition can contain:
Explanation: The PUs can be:
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| Q | What is SNA and the SNA Protocols? | ||||||
| A | SNA stands for System Network
Architecture and is a proprietary standard developed by IBM in the 1970's.
SNA is a blueprint for a communications network and over the past quarter
century IBM has managed its evolution. SNA is not an entity or a product. It
specifies the software and hardware products that are available and where
they are installed in the network and how the diverse groups of IBM products
connect and communicate with each other. SNA does correspond to a certain
extent correspond and interoperate with the layers of OSI and TCP/IP; which
by contrast are open non-proprietary standards developed in the 1970's.
The SNA protocols defined by IBM are:
Knowledge of SNA will be essential to selecting and implementing web enabling technologies in the IBM mainframe environments which have hybrid front-end software such as Java, MS .NET, or Oracle. |
| Q | I am a webmaster and Internet programmer who is now being given responsibility for implementing web enablement with IBM systems software - CICS, DB2, and IMS. Can SYS-ED help me? |
| A |
IBM mainframe systems still play the dominant role
in the enterprise as data repositories and depending upon your operational
objectives, we can provide a variety of learning paths at the fundamentals
level:
Skill level enhancement in conjunction with systems software courses:
These courses will provide the knowledge and experience to begin working on projects. |
| Q | I am new to the IBM mainframe environment and I have never heard of FICON. What is it and can it also be applied to client/server and web connectivity? |
| A | FICON is a proprietary protocol developed by IBM for use between IBM compatible mainframes and storage. It takes the higher layer ESCON protocol and maps it onto a Fibre Channel transport. |
| Q | I took your CICS Command Level Programming course back in the 1980's. Is the current version of the course much different? |
| A | Portions of the basic coding
are relatively unchanged; however a partial list of new facilities/changes
includes: compiler enhancements, CICS TCP/IP support, Java and CICS, and
Enterprise Java Beans.
The following URL will allow you to view the new facilities, organization of the workbook, and the workshop exercises: |
| Q | Is WebSphere supported on the IBM mainframe? |
| A | Yes, IBM has a WebSphere Application Server for z/OS. WebSphere Application Server provides the core J2EE architectural support for the deployment of applications. WebSphere MQ, WebSphere Application Server and WebSphere Application Developer are strategic products for IBM and will be used on mainframe systems and across the entire range of IBM operating systems - AIX, Linux, etc. |
