This book provides an introduction and step-by-step instructions for implementing the new functions in DFSMS, including functions of DFSMSdfp, DFSMSdss. Manually activating the first Storage Management. Subsystem Altering the SCDS on different DFSMS releases Copying SMS. method services commands, macro instructions, and JCL to process data sets. Macros z/OS DFSMS Macro Instructions for Data Sets describes the macros.
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IBM categorizes some of these programs as utilities  [a] and others as service aids  ; the boundaries are not always consistent or obvious. Many, but not all, of these programs match the types in utility software. The dataset has byte records, and the system will choose the block size for the output:.
In the example above, SYSIN control cards are coming from an in-stream file, but you can instead point to any sequential file or a PDS member containing control cards or a temporary data-set, if you wish. This data set comparison is performed at the logical record level.
It can’t restrict the comparison to only certain columns, it can’t ignore differences in white space, it doesn’t tell you where in the record the difference occurs, and it halts after 10 differences.
On the other hand, it is fast, and it is present on all IBM mainframes. So it is very useful when an exact match is expected, such as comparing load modules that have not been reblocked, or checking that a copy worked properly. It can also select or exclude specified members during the copy operation, and rename or replace members. Control statements define the fields of the records to be created, including position, length, format, and initialization to be performed.
IEBDG can use an existing dataset as input and change fields as specified in the majual statements, for example replacing a name field by random alphabetic text. The contents of each field may be varied for each record, for example by rotating the characters in an alphanumeric field left or right for each subsequent record. In this example, data set xxxxx. Each EDIT statement must apply to a separate job. These manhal can be coded:. All job steps preceding the specified step are omitted from the operation.
Any combination of these may be used in one namelist. If more than one step name is specified, the entire namelist must be enclosed in parentheses. Job steps preceding this step are not copied to the output data set. If no job name is specified, the first job encountered is processed.
See here for more info: On some systems it is possible to send email from a batch job by directing manyal output to the ” SMTP ” external writer. On such systems, the technique is as follows:.
Support programs for OS/360 and successors
With this utility, many different forms or logos could be stored as images, and printed when needed, all using the same standard blank paper, thus eliminating the need to stock many preprinted forms, and the need for operators to stop the printer and change paper. The UNIX patch utility is a similar program, but uses different input format markers e.
The only exceptions are as follow:. A branch to Register 14 would thus immediately exit the program. It consisted initially as a single instruction a “Branch to Register” This single instruction program had an error in it — it didn’t set the return code.
Hence a second instruction had to be added to clear the return code so that it would exit with the correct status. There was an additional error reported and manuzl by IBM on this now two instruction program. This error was due to the IEFBR14 program not being link-edited as reenterable simultaneously usable by more than one caller. These utilities are normally used by systems programmers in maintaining the operation of the system, rather than by programmers in doing application work on the system.
Multiple tapes may be labeled in one run of the utility. This example will label 3 tapes on a magnetic tape unit. Each tape will receive dfss IBM standard label.
Each tape will be rewound and unloaded after being labeled. A move differs dfssms a copy in that following a move the original data set is deleted, or scratched. This is acceptable maanual private volumes, such as tape or mountable DASD dvsms, but unacceptable public volumes.
You must specify unit and dgsms information for this DD statement. The source data sets are not cataloged. It is also used for renaming and scratching deleting a data set. Select and format SMF records for tape errors. These are utility program that IBM documents in service aids or diagnosis  manuals.
mainframe – Extended VSAM allocation – Stack Overflow
The functions of this program have been subsumed by SMP. Stand-alone program to format and print the system job queue. Not applicable to MVS. Format and print the system job queue. It is very frequently used; often the most commonly used application program in a mainframe shop.
This statement identifies the position, length, and data type of each key. Other statements allow the user to specify which records should be included or excluded from the sort and specify other transformations to be performed on the data. Keys can be located anywhere in the record and do not have to be contiguous. Sorting can be specified on any combination of ascending and descending sequence by key. Final merge phases then merge the sections to produce the sorted output.
SORT uses one of a number of techniques for distributing the sections among secondary storage devices. Usually SORT can choose the optimal technique, but this can be overridden by the user.
DFSMSdfp added the Binder as an alternatives for load modules, and as the only option for program objects. The Linkage editor creates and replaces load modules in a partitioned data set from a combination of control cards, object modules other load modules.
It was originally available in several configurations depending on storage requirement, but the E level Linkage Editor is no longer available and the F level Linkage Editor is now known simply as the Linkage Editor. The binder performs the same functions as the Linkage Editor.
In addition, it supports a new format, the program object, which is the functional equivalent of a load module in Partitioned Data Set Extended PDSEwith many additional capabilities. Each programming language used in a computer shop will have one or more associated compilers that translate a source program into a machine-language object module.
Then the object module from the compiler must be processed by the linkage editor, IEWL, to create an executable load module. There are many other compilers for various other programming languages. Assembler H and Assembler H Version 2 are program product assemblers that are generally faster than Assemblers E, F, and XF, although not fully compatible with any of them. It replaces all of the older assemblers, although it is not fully compatible with them.
From Wikipedia, the free encyclopedia. Utilities PDF Twelfth ed.
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