Portal | Manuals | References | Downloads | Info | Programs | JCLs | Master the Mainframes
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Usergroups Profile Log in to check your private messages Log in
 

 

Explain kinds of JCL - asked in interview

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM
View previous topic :: :: View next topic  
Author Message
Kisor

New User


Joined: 24 Jul 2003
Posts: 7

PostPosted: Mon Aug 04, 2003 6:18 pm    Post subject: Explain kinds of JCL - asked in interview
Reply with quote

Hi,
I attend a interview in that they asked Explain kinds of JCL?? the question is bit confusing. Please Clarify

Regards,

SKisor Kumar
Back to top
View user's profile Send private message

devesh

New User


Joined: 26 Jul 2003
Posts: 1
Location: USA

PostPosted: Mon Aug 04, 2003 7:53 pm    Post subject:
Reply with quote

Hi

I am not sure but those guys may be expecting an answer like 3 system
viz. standard JCL, JES2, JES3. Though many of their commands are identical they differ in few ways.

We need to go back to MVS history.This was long back when MVS didnt have effective schedular, So people were using JES2 also known as HASP and JES3 also know as ASP (I forgot the correct full forms). They are mutually exclusive. When u have a single processor u use JES2 subsystem whereas if u have multiple processor u need to use JES3. All commands specific to JES2 begin with a /* where as command specific to JES3 begins with //* followed by no space. Todays MVS has integrated both these sub system and so within a single JCL u can use our standard JCL as well statements from any of these systems. One thing why even today we use some of the statements from these subsystem because they give us more control on environment.

This is from my memory. If u refer to the JCL reference manuals u will find more stuff about them. Expert plz. add.....

Devesh
Back to top
View user's profile Send private message
harikrishnanrajeev

EXPERT


Joined: 28 Jan 2004
Posts: 37
Location: Trivandrum

PostPosted: Wed Jan 28, 2004 10:00 pm    Post subject:
Reply with quote

Hello,

There are 3 diff JCL's that are in common use on Mainframe computers.

1. Most commonly used is MVC ( which is orignally called OS) . This JCL is the most preferred. Requires more computing power and so used by large companies.

2. Another JCL dates back to about as far as MVS is VSE ( originally called DOS long before PC was invented). This JCL requires less resources.

3. Third one is CMS ( Conversational Monitor System ).

regards

Hari.

If possible pls post here or mail me ( hari_r@emailbox.com.au) some good mainframe interview questions.
Back to top
View user's profile Send private message
mmwife

Super Moderator


Joined: 30 May 2003
Posts: 1592

PostPosted: Thu Jan 29, 2004 3:30 am    Post subject:
Reply with quote

Hi Kisor,

You should have asked the interviewer this question. Don't be afraid to ask them to clarify. You could have something like: "Do you mean the kinds of statements in JCL, JOB, EXEC, DD? Or JES2/3 control statements?". Who knows what he meant, except him.

Regards, Jack.
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts Where can i find Interview questions ... Elixir Mainframe Interview Questions 4 Sat Feb 20, 2016 12:38 am
No new posts Can someone explain me this JCL line ... PeterHolland JCL & VSAM 9 Sat Dec 12, 2015 7:22 am
This topic is locked: you cannot edit posts or make replies. Mainframe interview on 10th Oct 2015 ... kotesh Mainframe Jobs 0 Thu Oct 08, 2015 5:21 pm
No new posts Sticky: Mainframe Developer Interview Questions Milin Mainframe Interview Questions 12 Wed Jan 07, 2015 8:58 pm
No new posts Few more CICS interview questions Milin Mainframe Interview Questions 3 Tue Dec 23, 2014 3:46 am


Facebook
Back to Top
 
Mainframe Wiki | Forum Rules | Bookmarks | Subscriptions | FAQ | Tutorials | Contact Us