Answer / dimpy19

1. The LMCOPY service copies members of a partitioned data set, or copies an entire sequential data set.
2. Completion of the LMINIT service is required before you can invoke LMCOPY.
3. You must specify ENQ(MOD) with the LMINIT service if you want to use LMCOPY to append records to the "to-data-id".
4.FROMID and TODATAID can refer to the same data set but they cannot have the same data-id.
5.LMCOPY does not support the copying of unmovable data sets
6.if from-data-id represents an empty sequential data set, LMCOPY performs the copy but sets the return code to 4 as a warning.


>>-ISPEXEC--LMCOPY--FROMID(from-data-id)------------------------>

>--+---------------------------+--TODATAID(to-data-id)---------->
'-FROMMEM(from-member-name)-'

>--+-----------------------+------------------------------------>
'-TOMEM(to-member-name)-'

>--+---------+--+------+--+-------+--+------+------------------->
'-REPLACE-' '-PACK-' '-TRUNC-' '-LOCK-'

.-ALIAS---.
>--+------------------+--+---------+---------------------------><
'-SCLMSET(-+-Y-+-)-' '-NOALIAS-'
'-N-'

what is the default region size if I dont specify region parametre in my job card ( I know that if I specify region=0k or 0M, then the job will occupy all he available resources at the time of job execution), but I want to know the defult value for "region" paramatre.

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When space is allocated for an output dataset, what units can be used?

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what is the function of iebcompr?....is it compare record length or characteristics of a dataset?...pls explain with examples.......

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how to identify the file used in the JCL is an VSAM file. Just seeing the JCL code how can we track the file as VSAM file?

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if in a job, region is mentioned in both jobcard and in step then which is cosidered at the step level? A job has region 4k in jobcard and step1 with region 0k and step2 with 16k, then what is the region allocated for the entire job? what is the region step1 takes? what is the region step2 takes?

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