Interested to Buy Any Domain ? << Click Here >> for more details...
Explain about LMINIT - generate a data ID for a data set
- 1 Answers
- 2658 Views
- I also Faced
- E-Mail Answers
Answer Posted / dimpy19
1.The LMINIT service allows the dialog to associate a data ID for ISPF library or PS or PDS
2. The data ID is generated by LMINIT and can be used to identify the data set for processing by other library access services or the BROWSE or EDIT service
3.If LMINIT is issued with an enqueue (ENQ) of SHRW and LMOPEN is issued with the OUTPUT option, it is essential that an LMCLOSE is issued when the dialog has finished processing the data set,
since the DASD volume is reserved until LMCLOSE is invoked.
4. LMQUERY service to find out how the LMINIT parameters are set
5.The requirements for enqueuing (ENQ) the data within ISPF so that the dialog can use it in the desired manner.
a.SHR shows that the existing data can be shared; default for INPUT in LMOPEN service
b.EXCLU shows that exclusive use of the data is required; for example, when you want to change the data no one else can have access to it.
c.SHRW permits a shared write for the data. This option is used by ISPF Edit. It is used only for a partitioned data set.
In this way, more than one user can read from the data, but members can be rewritten when necessary through an enqueue or dequeue used by Edit.
Edit can now have the data ID open for INPUT and OUTPUT at the same time.
A data set that is allocated with an enqueue of SHRW can be opened for either INPUT or OUTPUT using the LMOPEN service.
d.MOD shows that more records are to be added to the end of a sequential data set. MOD is used with the OUTPUT option of the LMOPEN service.
>>-ISPEXEC--LMINIT--DATAID(data-id-var)------------------------->
>--+-| PROJECT options |-+--+----------------+------------------>
+-DATASET(dsname)-----+ '-VOLUME(serial)-'
'-DDNAME(ddname)------'
>--+--------------------+--+------------------+----------------->
'-PASSWORD(password)-' | .-SHR---. |
'-ENQ(-+-EXCLU-+-)-'
+-SHRW--+
'-MOD---'
>--+--------------+--------------------------------------------><
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What are the parameter we cannot use in procedure?
how would you create a temporary dataset? And where will you use them?
I have a cobol db2 program(PGM A) where other program (PGM B) will call this program and passes some 50 fields data to PGM A. PGM A has some layout in which it receives the data from PGM B. And this layout has been copied in the linkage section pf PGM A. After getting the data, PGM A writes the data in a flat file in the same layout which it receives from PGM B. PGM B is a simple COBOL pgm. Please provide a JCL to run these programs.
Name the parameters which can be used to limit the number of records written to a sysout dataset?
What is the function of the dd mgmtclas keyword in sms datasets?
how JCL works?
Differentiate between addressing mode and run mode.
State the uses of syspring, sysin, sort fields, sum fields and dummy.
which utility is used to sort a file in jcl?
what is the purpose of coding class parameter in job statement?
Suppose there are 2 Input files Infile-1 and Infile-2. Both the Files contain Employee Records. You need to compare both the files and Write the Common Records in third file named Outfile. How can we do this using File-Aid?
What parameter of the job statement is used to limit the cpu time consumed by the job?
how can you check if a file is empty using jcl?
Can an individual step be restricted from using all the jobs allowed cpu time?
What is Cataloged Procedures?
