Question 1

How can a screen field that has changed since the last output operation be detected ?

Accepted Answer

Attach the MDT attribute to the field, to detect whether field has been changed as a result of user input.

Question 2

When will the message for field that has the ERRMSG keyword active not be displayed ?

Accepted Answer

If more than one ERRMSG keywords are active then the first will be active, because only one error message will be displayed at a time.

Question 3

What is the use of OVRPRTF ?

Accepted Answer

Override with Printer file (OVRPRTF) command is used to override certain parameters of the printer files used in the program or to replace the printer file.

Question 4

What are the two record formats that a subfile contains ?

Accepted Answer

Subfile record format(SFL), and subfile control record format(SFLCTL).

Question 5

What is the maximum number of subfiles that can specified in a display file ?

Accepted Answer

512

Question 6

What is a Join Logical File, Can it be used for Update ?

Accepted Answer

Logical file that combines more than one physical file.Update is not possible through JLF.

Question 7

What is the Select and Omit criteria in AS400 logical files ?

Accepted Answer

This is used to specify rules for the Selection/Omission of records from a Physical File.

Question 8

What is the default value for the number of increments for the physical file ?

Accepted Answer

Three.

Nuff said!

Question 9

What is the purpose of OVRDTA and OVRATR keywords ?

Accepted Answer

OVRDTA keyword (field or record level) can be used to override the existing data contents of a field or record already on the display.

OVRATR keyword (field or record level) can be used to override the existing display attributes of a field or record already on the display.

Question 10

If DSPATR(PC) and CSRLOC were specified for a format, which keyword would have priority ?

Accepted Answer

CSRLOC gains priority.

Question 11

How can the sign of a numeric be ignored when sequencing a logical file ?

Accepted Answer

By specifying the record level keyword UNSIGNED.

Question 12

How do you toggle between single line and multi-line display of a particular record in a subfile ?

Accepted Answer

Using SFLDROP keyword.

Question 13

How to pick up the changed records every time in a subfile after the first change made ?

Accepted Answer

Seton SFLNXTCHG keyword indicator and update the subfile record.

Question 14

Where is the variable for the SLNO(*VAR) keyword be defined ?

Accepted Answer

At run time before displaying the record format.

Question 15

How to see active jobs of the IBM system i ?

Accepted Answer

Using WRKACTJOB command.

Question 16

What is the purpose of STRCMTCTL command ?

Accepted Answer

Starts commitment control for files that are being journal led.

Question 17

What keyword must be used with PROTECT keyword ?

Accepted Answer

OVERLAY

Question 18

What is AS400 journaling and commitment control?

Accepted Answer

Journaling is a function which records the changes in a file in a journal. These record images are used to recover the changes in the file should the system ends abnormally. Commitment control is a function that allows you to define and process a no of changes to database files as a single unit (transaction).

Question 19

Explain the purpose of AS400 KEEP and ASSUME keywords ?

Accepted Answer

KEEP : Keep the display from being deleted when the display file is closed.
ASSUME : It is used to specify that the OS/400 program is to assume that this record is already shown on the display when this file is opened.

Question 20

What is a Folder?

Accepted Answer

A Folder is a named object that is used as a directory for documents and other folders. Folders can be filed with in another folder.

Question 21

How do you change file attributes such as size, file wait time, record wait time etc., permanently ?

Accepted Answer

Using CHGPF command.

Question 22

How do you grant authority for an object?

Accepted Answer

Using GRTOBJAUT command.

Question 23

How do you use DEBUG utility ?

Accepted Answer

STRDBG program-name UPDPROD(*YES)

Question 24

What command must be executed before executing OPNQRYF command?

Accepted Answer

OVRDBF.

Question 25

What is the difference between Interactive & Batch jobs in AS400?

Accepted Answer

Interactive Job: Job started for a person who signon to a workstation. Batch Job: A predefined group of processing actions submitted to the system to be performed.

Question 26

How do you execute jobs in batch mode? SBMJOB

Accepted Answer

SBMJOB

The Submit Job (SBMJOB) command allows a job that is running to submit another job to a job queue to be run later as a batch job.

Question 27

How are the objects stored in AS/400?

Accepted Answer

All objects are stored on AS/400 in a single level storage. In this method all objects are referenced by one virtual address which is translated into a physical address whether it is an auxiliary storage or main memory.

Question 28

How many libraries can be there in an AS400 library list?

Accepted Answer

Total 40 (15 system and 25 application).

Question 29

Is it possible to join the same file to itself ?

Accepted Answer

Yes.

Question 30

What is class of service ?

Accepted Answer

A set of link and node characteristics associated with a session.

Question 31

What is the function of the SBMRJEJOB command?

Accepted Answer

Sends RJE input stream to host system.

Question 32

What is the system part of IBM i Library List?

Accepted Answer

Where is the system part of IBM i Library List?

Question 33

How will you display a particular page in subfile ?

Accepted Answer

Move a valid relative record number(RRN) in the field specified using SFLRCDNBR keyword in DDS.

Question 34