Mainframe interview questions – page 4

What is primary allocation for a dataset?

What do you mean by RDW in VSAM?

What are the differences between JES2 & JES3 ?

What is secondary indexing?

What (are sibblers) is sibbling?

What do you know about DBD gen?

Is it a Mainframe Systems problem or a Network Systems problem?

How do you load a VSAM data set with records ?

What are common status codes that you come across?

What does the keyword DCB mean and what are some of the keywords associated with it?

How is the keyword DUMMY used in JCL?

What is difference between addressing mode and residential mode

What does a disposition of (NEW,CATLG,KEEP) mean?

How many PCB's can be coded within a PSB?

Under IDCAMS , multiple functions can be executed, each of which returns a cond code. What will be the condition code returned to the operating system ?

What is the limitation on the no. of levels in a DL/I database?

What happens when you open an empty VSAM file in a COBOL program for input?

How many sgment types can u have in a DL/I database?

How do you access a file that had a disposition of KEEP?

Assuming that the DEFINE jcl is not available, how do you get info about a VSAM file's organisation ?

What are the four control blocks of Message Format Service (MFS) ?

What is MOD and when would you use it?

What is the difference between BLKSIZE and LRECL?

What is the IDD?

How can we distinguish between an online and batch program in IMS environment?

What is the meaning of Copy IDMS Subschema-Binds?

Suppose 3 generations of a GDG exist. How would you reference the 1 st generation in the JCL?

So manual and automatic are the connect options for a set. What are the disconnect options?

What for procopt is used? List some of them?

What are the kinds of job control statements?