Explain about LMOPEN -



Explain about LMOPEN -..

Answer / dimpy19

1.The LMOPEN service opens the data set associated with a given data ID so the data set can be either read from, using LMGET, or written to, using LMPUT.
2.The LMINIT service must be completed before LMOPEN can be used.
3.For each LMOPEN invocation, you should invoke a matching LMCLOSE service.
4.The data ID associated with the data set to be opened. The data ID has been generated by the LMINIT service. The maximum length of this parameter is 8 characters.
5.Whether the data set is to be opened for reading or writing. INPUT is the default.
6.INPUT specifies that the dialog invoking the service uses the LMMFIND and LMGET services to read from the data set.
The enqueue value for the LMINIT service can be SHR, EXCLU, or SHRW.
7.OUTPUT specifies that the dialog invoking the service uses LMPUT and either LMMADD or LMMREP to write to the data set, or
uses LMMDEL or LMMREN to change the data set. The enqueue value for the LMINIT service can be EXCLU, SHRW, or MOD
8.


>>-ISPEXEC--LMOPEN--DATAID(data-id)--+----------------------+--->
| .-INPUT--. |
'-OPTION(-+-OUTPUT-+-)-'

>--+------------------+--+------------------+------------------->
'-LRECL(lrecl-var)-' '-RECFM(recfm-var)-'

>--+--------------+--------------------------------------------><
'-ORG(org-var)-'

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More JCL Interview Questions

A file has dta in S9(09) COMP format. How do I move the data into a character field X(10)?

2 Answers  


how many max steps can we use in a job? pls answer to my question

3 Answers   TCS,


Suppose I have a file with three fields with data in the following format 1. empid - S9(4) COMP 2. empname - X(20) 3. empsal - S9(5)V(2) COMP-3 If I view this file, it will not be in a readable format. How to display the empid and empsal fields in a readable format without using COBOL program? What kind of SORT card will have to be coded?

4 Answers  


The disp in the JCL is MOD and the program opens the file in OUTPUT mode. What happens ? The DISP in the JCL is SHR and the program opens the file in EXTEND mode. What happens ?

3 Answers  


read all error codes like SB07?

1 Answers  






In how ways you can pass the data from Jcl to cobol ?

3 Answers   Cap Gemini, IBM,


Can a PS file be read in reverse order?If so,how

2 Answers   Syntel,


How to submit multiple jobs. These jobs are members in PDS. The second job should run if the first job runs successfully and so on.

1 Answers  


Explain how can the disposition of sysout datasets be set for an entire jobstream?

0 Answers  


i have two flat files.i want to select one record from that file by using jcl.for example file1 contains emp no,name,joining date. file2 has same details.emp no is primary key. i will give empno.that emp details send to outfile.please let me know if any one knows it.give sample code.

1 Answers   TCS,


How many types we can give input to JCL

5 Answers   UHG,


what are the various stages of job processing?

0 Answers   IBM,


Categories