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| | VSAM Conversion |
 | | VSAM was an early file structure from IBM that provided the ability to access the VSAM file data using a direct key or a sequence number, and to access the VSAM file data sequentially by the order entered or by one or more pre-defined indexes. | | | VSAM data is not relational and requires planning to integrate with the newer technologies and languages that are available today. | | | VSAM files are not considered to be databases because they do not provide the ability to relate the data elements between different VSAM files. |
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http://soph.com/VSAM_Files_and_Applications.htm
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| | VSAM record-level data sharing |
| | One objective of VSAM was to provide a single data format and organization and access functions for data stored on DASD (direct access storage device). | | | Although the byte address technique is used, the VSAM data are stored and accessed as records. | | | A time-out function is also provided whereby a VSAM request can declare a maximum amount of time that it is willing to wait for a lock. |
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http://www.research.ibm.com/journal/sj/362/strickland.html
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| | Jaqui Lynch - VSAM Tutorial and Tuning |
| | VSAM is a high performance access method used to organise data and to maintain information about that data in an index or library called a catalog. | | | As VSAM has become a more integral part of the CICS and MVS environments, understanding VSAM and knowing how to tune the subsystem has become more important. | | | The upgrade set is the list of all AIXes that VSAM must maintain for a specific base cluster, so that whenever data in the base cluster is updated, the AIX files are also updated. |
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http://www.circle4.com/jaqui/pouvsm92/pouvsm92.html
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| | Virtual Storage Access Method |
| | VSAM was, by several accounts, intended to replace all of the earlier data management systems in use by IBM's operating systems. | | | The master catalog "owns" all other VSAM resources in a computer system, and this is denoted by the position of the master catalog (#1) in the chart. | | | Actually, when either the master catalog or a user catalog is defined, VSAM creates a data space to hold the user catalog entries, allocating the amount of space specified for the user catalog from the space available on the volume as a data space which will be completely allocated to the catalog.. |
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http://www.jaymoseley.com/hercules/vstutor/vstutor.htm
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| | VSAM |
| | The structure of VSAM evolves around four basic concepts: the master catalog, the user catalog, the data space and, of course, the file itself which is commonly referred to as a cluster. | | | VSAM, upon request from an application program will locate, open and close a requested file and in doing so will check passwords and insure that the master catalog information is correct as it pertains to the requested file. | | | It should be noted that the index structure under VSAM is quite complex and that the index is itself file which consists of a number of levels. |
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http://cis.sunydutchess.edu/vsam.htm
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| | Felgall Comms Software - Transmitting VSAM Files |
| | VSAM files in fact are one reason why mainframe XCOM uses add rather than append. | | | The first thing that we need to know when transmitting a VSAM file is to make sure that the file is pre-allocated on the destination system first as XCOM does not have the ability to actually create VSAM files. | | | ESDS VSAM files should use the add option to append the records to the end of the existing file. |
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http://www.felgall.com/xcom5.htm
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| | VSAM INTERVIEW QUESTIONS |
| | During processing of a VSAM file, some system error occurs and it is subsequently unusable. | | | A VSAM file that has never contained a record is treated as unavailable. | | | Value of 3 for cross system means that any number of jobs can process the file for input or output (VSAM does nothing to ensure integrity). |
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http://www.geocities.com/srcsinc/VSAM.html
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| | DBAzine.com: DB2 or VSAM? |
| | VSAM is a file access method whereas DB2 is a DBMS â” with all the inherent benefits of a DBMS. | | | The main advantage of using a DBMS is to impose a logical, structured organization on the data. | | | Performing a similar task in VSAM is much more difficult â” especially if the file does not have any unused âfillerâ area at the end. |
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http://www.dbazine.com/db2/db2-mfarticles/mullins-db2orvsam
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| | IAM vs. VSAM: A Comparison of Data Access Methods |
| | IAM can be used in place of VSAM KSDS files, which are processed sequentially or randomly by key, and VSAM ESDS files, which are accessed sequentially or randomly by relative byte address, or by control interval. | | | This is referred to by IBM as Extended Addressability, which allows the VSAM ESDS file to exceed 4 gigabytes. | | | Harry L. Kirkpatrick is a lead quality assurance representative for BMC Software, Inc. He has more than 20 years experience in Information Technology with expertise in VSAM, software development and MVS system management. |
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http://www.bmc.com/technews/003/IAMvsVSAM.html
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| | Simulating the VSAM START command |
| | Be that as it may, from what I can glean from my dusty old VSAM books, the START statement is a way of telling VSAM where to start reading in the file. | | | With DB2 and SQL, the best approach to optimizing performance is to put the work into the SQL statements. | | | A straight conversion of VSAM files to DB2 tables and then VSAM read to DB2 selects will likely result in a poorly performing, badly designed DB2 database and application. |
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http://search390.techtarget.com/ateQuestionNResponse/0,289625,sid10_cid594462_tax293066,00.html
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| | VSAM training VSAM courses VSAM optimization SYS-ED SYSED |
| | That there is a scarcity of fast-track VSAM performance and optimization courses, 3 days or fewer in duration, geared to different operating systems. | | | SYS-ED's VSAM courses contain the most up-to-the minute information available anywhere, including the latest features and capabilities of VSAM, and is in line with state-of the-art hardware. | | | You'll not only learn how VSAM works, but how to make it work well, and what to do if things go wrong. |
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http://www.sysed.com/ADs/VSAMAd.htm
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| | VSAM support in TSO, ISPF, REXX and CLIST |
| | Check the CBT Tape and the VSAM section of the Xephon Update archives for more free software for the TSO environment. | | | LISTDSI does not support VSAM either and only returns a minimal amount of information; for some reason, SMS information (which is not VSAM-specific) is not returned for a VSAM data set. | | | There are two free VSAM browsers in the Xephon Archives: VBROWSE and VSAM File Display. |
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http://gsf-soft.com/Documents/TSOVSAM.shtml
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| | VSAM IFD Testbed Infrastructure |
| | The VSAM OCU accepts video processing results from each of the SPUs and integrates the information with a site model and a database of known objects to infer activities that are of interest to the user. | | | VIS nodes are designed to distribute the output of the VSAM network to where it is needed. | | | The major research issue involved in demonstrating the redeployable van involves rapid calibration of sensor pose after redeployment, so that object detection and tracking results can be integrated into the VSAM network (via computation of geolocation) for display at the operator control console. |
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http://www-2.cs.cmu.edu/~vsam/Web2000/ifdtestbed.html
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| | Mainframes.com - VSAM |
| | According to IBM, VSAM gives device independence of data storage and eases migration of data to new devices. | | | However, according to the third-party vendors who make a living selling VSAM software, VSAM software (notably IDCAMS) is a pig to use, and users need all the help they can get. | | | IBM mainframe proprietary software for direct (by key or by record number) or sequential processing of fixed and variable length records on DASD. |
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http://www.mainframes.com/vsam.htm
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| | VSAM driver - CONNX (ODBC, JDBC, OLE DB and .NET data access and driver for VSAM) |
| | Shortens development time and reduces cost of system enhancements and new development by optimizing the existing VSAM data. | | | Once imported, the target VSAM file can be treated as one or more logical tables or views. | | | Repeating groups in COBOL copybooks defined with the Occurs or Occurs Depending On COBOL syntax can be represented as CONNX rotated arrays. |
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http://www.connx.com/products/vsam.html
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| | VSAM Alternative |
| | Batch programs that must read entire VSAM files sequentially are already, or can easily become, insensitive to the order in which records are returned. | | | Although third party products allow SQL queries of VSAM files, VSAM itself is not well suited to such queries. | | | Not all VSAM users have the hardware features that RLS requires. |
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http://www.risystems.com/vsamtran.htm
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| | IBM Redbooks VSAM Demystified |
| | Wherever possible an example is used to reinforce a description of a VSAM function. | | | Virtual Storage Access Method (VSAM) is one of the access methods used to process data. | | | This book helps to demystify VSAM and gives you the information necessary to understand, evaluate, and use VSAM properly. |
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http://www.redbooks.ibm.com/abstracts/sg246105.html
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| | Programming Books: Assembler, TSO, MVS, VSAM, IMS, DLI, FOCUS, Abends, CLIST,SAS, |
| | VSAM is a type of file structure that exists on IBM's mainframe computers. | | | Focus is a language that includes reporting, programming, database and file access capabilities and is found in many environments. | | | About the utility program for VSAM and other file types. |
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http://www.theamericanprogrammer.com/books/books.mainframe.other.html
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| | VSAM essentials |
| | This course enables students to define and tune VSAM files, as well as understand the underlying data structures used in the four types of VSAM files. | | | Diagnose problems in VSAM data sets using knowledge of the internal structure of VSAM data sets, components, and control fields. | | | Lower computer resources used in running applications that use VSAM data sets. |
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http://www.abis.be/ncourses/e0783.html
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| | VSAM File Access for COBOL |
| | If you are interested in writing COBOL programs that utilize VSAM datasets, I hope this documentation has provided you with the information you need to install my routine and get started writing programs on your own. | | | If any action performed on a VSAM dataset results in an error, a value - usually 8 - is returned, and will be placed in this field. | | | The only option up until now (at least to the best of my knowledge) has been to write the COBOL code as though it was manipulating ISAM files and point the DD for the ISAM file to a VSAM dataset, which invokes the ISAM Interface Program under the covers. |
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http://www.jaymoseley.com/hercules/compiling/vscobol.htm
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| | VSAM Workshop |
| | The VSAM project is being sponsored by the Defense Advanced Research Projects Agency, Information Systems Office (DARPA ISO), as part of the Image Understanding for Battlefield Awareness effort. | | | Novel image understanding technologies developed under the VSAM project will enable a single human operator to monitor activities over a large, complex area using a distributed network of video sensors. | | | The workshop will be held at Carnegie Mellon University in Pittsburgh, Pennsylvania, home to the Robotics Institute, one of the leaders in vision systems research. |
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http://www.cs.cmu.edu/~vsam/workshop98.html
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| | VSAM Update |
| | Many of the articles in each 64-page issue are specifications of VSAM extensions and modifications, including code where necessary - a practical toolkit of ready-made enhancements, developed and tested in a working environment by VSAM experts throughout the world. | | | Subscribers also get free access via our Web site to all current and past issues in Acrobat PDF format, all the way back to January 1999 (and also all published code in ASCII text format). | | | After all, even free information is too expensive if you can't make use of it! |
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http://www.xephon.com/updates/VSAMf.html
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| | [No title] |
| | filename vsamprod 'kanaps.vsam.ksds' disp=shr; data kanap; infile vsamprod vsam; input firstname $15. | | | Then, you simply use the FILENAME to allocate the file to the SAS System, use an INFILE statement in a DATA Step to refer to the VSAM file that will be read, and use an INPUT statement to read the records and fields within records. | | | In the example, above, we first allocate the VSAM file via a FILENAME statement. |
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http://www.sconsig.com/sastips/tip00326.htm
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| | VSAM Update code |
| | Updating data in an on-line VSAM file - continued | | | An easy way to print VSAM file contents | | | Free code from VSAM Update : chronological list by date of issue |
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http://www.xephon.com/updates/vsamissue.htm
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| | VSAM vs. DB2 |
| | It is much easier to write ad hoc SQL against DB2 tables than it is to code programs that access VSAM files. | | | The index is used to access the data faster than simply reading every record until the right one is found. | | | And why is there a need for converting VSAM to DB2? |
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http://search390.techtarget.com/ateQuestionNResponse/0,289625,sid10_cid639889_tax293066,00.html
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| | Virtual storage access method - Wikipedia, the free encyclopedia |
| | Both IMS/DB and DB2 are implemented on top of VSAM and use its underlying data structures. | | | Virtual Storage Access Method ( VSAM) is an IBM disk file storage scheme first used in the S/370 and | | | VSAM comprises three access methods: Keyed Sequential Data Set (KSDS), Relative Record Data Set (RRDS) and Entry Sequenced Data Set (ESDS). |
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http://en.wikipedia.org/wiki/VSAM
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| | vsam - Results By Computer Training Search |
| | VSAM is an ACCESS METHOD designed to operate in a virtual storage environment.It is not a DBMS or... | | | Unless otherwise stated the examples provided in The VSAM -QSAM Connection will run on an IBM Mainframe using MVS or a Personal Computer using Windows and Micro Focus Mainframe Express... | | | The VSAM File, Read Randomly, Based on Records in a Regular Sequential File 77 19. |
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http://www.edcomp.com/results/vsam.html
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| | VSAM, IDCAMS FOR COBOL PROGRAMMERS |
| | The course covers, in detail, all aspects of using VSAM and IDCAMS that are important to a abalysts and application COBOL programmer. | | | Each of the three VSAM file types (KSDS, ESDS, RRDS) will be reviewed in detail showing the design and efficiency features of each. | | | All file structures will be related to the MVS/ VSAM space allocation and catalogs necessary to support the files. |
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http://www.kwa.net/VSAMCOB5d.htm
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| | VSAM |
| | VSAM: Advanced Features provides an overview of the advanced features of VSAM data sets. | | | This course is for anyone who is interested in learning more about advanced features of VSAM. | | | After completing VSAM: Advanced Features, the user should be able to: |
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http://www.trainingontheweb.net/catalog/vsam02.htm
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| | VSAM for Applications Programmers |
| | After an introduction to VSAM concepts and a definition of VSAM te4rms, the student will be exposed to the features and facilities of VSAM. | | | The necessary programming statements in order to process a VSAM file will be discussed in detail. | | | Programmers and/or Programmer/Analysts that need to perform in a VSAM-based environment. |
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http://www.apexcomputer.com/html_docs/vsam.html
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| | VSAM for the COBOL Programmer |
| | To work with VSAM files, though, you need to know the IBM codes for error processing. | | | If you're a COBOL programmer who is just starting to work with an IBM mainframe, this book shows you how to work with VSAM files. | | | You need to use JCL to run the programs that use the files. |
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http://www.alldirect.com/book.asp?isbn=0911625453&cartID=53330413809050203
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| | VSAM in TutorGig Directory |
| | Mainstar Software: Resources - Although focused on z/OS storage management, many of the VSAM documents, for example, also apply to VSE/ESA and z/VM. | | | Circle Computer Group - DB2 and CICS migration specialists, combining software and services for: IMS to DB2, VSAM to DB2, CA-IDMS to DB2, ADABAS to DB2, CA-Datacom to DB2, Total/Supra to DB2 and IMS/TM to CICS. | | | SWS Software Technologies - Software products based on the Data and Application Software Evolution technology (DASE) rule-based expert system, typically migrating data from file systems (such as VSAM) and non-relational DataBase Management Systems (DBMS) to relational DBMS such as Oracle and DB2. |
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http://www.tutorgig.com/webdir/searchdir.php?keywords=VSAM
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| | VSAM and QSAM Examples |
| | This suite of programs will create and populate the QSAM files and VSAM data sets used by many of the sample programs provided by SimoTime. | | | SimoZAPS Utility Program has the capability of generating a COBOL program that will do the conversion of sequential and VSAM (KSDS) files between EBCDIC and ASCII. | | | Populate a VSAM Data Set - COBOL Program |
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http://www.simotime.com/utldat01.htm
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| | Mainframe Integration, Mainframe Legacy Data Access and Legacy Data Integration |
| | Any flat file or VSAM file can be presented as a relational table, directly to any Windows application. | | | In addition, you can integrate this data with any IMS segments or DB2 tables, to create a comprehensive legacy data access solution. | | | No more ETL or staged data, no more delays, just all of the data, all of the time. |
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http://www.ArbutusSoftware.com
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| | IBM: VSE/VSAM for VM Version 6 Release 1 |
| | VSAM will exploit the S/390 hardware-assisted compression feature, if available on the processor; otherwise data compression is provided by software algorithms. | | | The IBM RAMAC Array DASD and Subsystem are high-performance RAID-5 (redundant array of independent disks -- level five) fault tolerant disk arrays. | | | The following VSAM control blocks are moved above the 16MB line: |
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http://www.vm.ibm.com/related/vsam0612.html
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| | MacKinney Systems - VSAM manipulation - ISPF/VSAM Utility |
| | VSAM Utility allows allocation (defining) of VSAM files including alternate indexes and paths. | | | IVU provides VSAM manipulation by editing and browsing of VSAM and NON-VSAM files with no LRECL or file size restrictions. | | | It was designed primarily for the use of applications and systems programmers. |
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http://www.mackinney.com/products/other/ispf_vsam_utility.htm
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| | VSAM |
| | VSAM (Virtual Storage Access Method) beschreibt eine auf Dateien die auf IBM Großrechnersystemen unter Betriebssystem z/OS angelegt wurden. | | | Die Namensgebung basiert auf Idee Dateiinhalte wie Zellen im (virtuellen) Hauptspeicher zu können was mit Hilfe einer RBA Byte Adresse) unterstützt wird. | | | Dafür VSAM die Option GENKEY was für "Generic Key" steht. |
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http://www.uni-protokolle.de/Lexikon/VSAM.html
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| | Programming Manuals , Tips and Tutorials : VSAM ESDS KSDS RRDS |
| | VSAM is a file system used in IBM's MVS, OS/390 and ZOS operating systems. | | | In VSAM, Files can be read sequentially as well as randomly. | | | VSAM Tutorial by Jay Mosley Jaqui Lynch - VSAM Tutorial and Tuning VSAM KSDS EXAMPLES VSAM File access for COBOL VSAM File access for PL/1 VSAM support in TSO, ISPF and REXX IBM MANUALS IBM VSAM BOOK CATALOG |
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http://www.geocities.com/srcsinc/programming/programming.vsam.html
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| | Mainframe Programming Books on COBOL, DB2, CICS, z/OS, JCL, VSAM, TSO, IMS, MVS, REXX, CLists, ISPF |
| | Mainframe Programming Books on COBOL, DB2, CICS, z/OS, JCL, VSAM, TSO, IMS, MVS, REXX, CLists, ISPF |
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http://www.murach.com/books/mainframe.htm
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| | MVS OS/390: VSAM Fundamentals |
| | The students will learn the different Virtual Storage Access Method (VSAM) data set organisations and how to define them in a performant way. | | | Making use of practical exercises the students will learn how to invoke IDCAMS services and how to code COBOL VSAM related I/O statements. | | | The students will learn how to interpret LISTCAT outputs and to identify the necessary tuning actions. |
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http://www.monitor.nl/cursus_mvs_os390_vsam_fundamentals_.htm
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| | MacKinney Systems - VSAM tuning reports - Listcat Plus |
| | This listcat summary can be analyzed with a spreadsheet. | | | Many users save enough disk space to pay for LISTCAT PLUS the first month. | | | If you are a current user and need a new release click here. |
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http://www.mackinney.com/products/other/listcat_plus.htm
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| | VSAM |
| | Die Namensgebung basiert auf der Idee, Dateiinhalte wie Zellen im (virtuellen) Hauptspeicher adressieren zu können, was mit Hilfe einer RBA (Relative Byte Adresse) unterstützt wird. | | | VSAM (Virtual Storage Access Method) beschreibt eine Zugriffsmethode auf Dateien, die auf IBM Großrechnersystemen unter dem Betriebssystem z/OS angelegt wurden. | | | Erst mit den Verbesserungen, welche die ICF -Cataloge (MVS XA) brachten, setzte sich VSAM wirklich durch. |
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http://www.toonorama.com/encyclopedia/V/VSAM
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| | SIM2000/VSAM/DMF for OS/390,MVS,VSE |
| | The control information is maintained in a VSAM dataset that is read and loaded into virtual storage during the SIM2000/VSAM/DMF system activation, which is part of the SIM2000/VSAM system activation. | | | SIM2000/VSAM/DMF provides an interface between the application program and VSAM. | | | SIM2000/VSAM/DMF is a product which allows users to modify any field in a VSAM or DL/1 record while the dataset is being processed. |
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http://dpewen.com/s2vsmdmf.htm
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| | VSAM Introduction |
| | Background information will be given on how to create and maintain files, and suggested ways to optimize performance as well as provide data security and integrity | | | Audience: Application programmers, project managers and systems personnel involved with the development or maintenance of applications which utilize VSAM. | | | Coding the logic needed to access VSAM files in application programs |
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http://hr.dop.wa.gov/training/Courses/mainfr/vsam_intro.htm
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| | Video Surveillance and Monitoring Homepage |
| | In 1997, the Defense Advanced Research Projects Agency (DARPA) Information Systems Office began a three-year program to develop Video Surveillance and Monitoring (VSAM) technology. | | | The objective of the VSAM project was to develop automated video understanding technology for use in future urban and battlefield surveillance applications. | | | Twelve other research contracts were awarded to university and industry labs to conduct research in focused technical areas that include human activity recognition, vehicle tracking and counting, airborne surveillance, novel sensor design, and geometric methods for graphical view transfer. |
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http://www.cs.cmu.edu/~vsam/vsamhome.html
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| | Circle Computer Group |
| | Circle is the global leader in providing transparent software solutions to allow clients to migrate IBM® mainframe applications running on legacy (IMS® and VSAM®) database platforms to DB2® without changing application code. | | | Circle Computer Group announces record licence sales in 2004 | | | Clients can benefit from reduced operating and support costs, enhanced integration of systems and access to legacy data from Web Services enabled applications. |
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http://www.circle-group.com
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| | Mainframeforum - PDS and VSAM size limitations |
| | At a big customer one those VSAM has 50.000 trk, then my customer moved that file to a new disk that support until 450.000 trk. | | | Our problem is that that VSAM file should grow and I heard there is a limitation for VSAM (Ksds) and PDS files? | | | I have been working with a product called ChangeMan ZMF whose use PDS and VSAM files. |
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http://www.mainframeforum.com/printthread.php?threadid=646075
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| | HYPER-BUF VSAM Buffer Optimizer, Storage Management |
| | BrightStor CA-Hyper-Buf VSAM Buffer Optimizer dynamically optimizes bufferspace—the greatest influence on VSAM performance—significantly reducing I/O rates, response time and elapsed job time. | | | Interactive System Productivity Facility (ISPF) panels are provided to start and stop BrightStor CA-Hyper-Buf VSAM Buffer Optimizer, display its status and model OPENs interactively. | | | Test constraints can be set to calculate and display the buffer values without actually implementing them. |
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http://www3.ca.com/Solutions/Product.asp?ID=1312
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