AS400 large factory interview

1. A brief introduction to interview in English ：

I am XXXX

I have about three companies working experience,

all projects were the bank projects on as400 .

XXXXX   year working for XXX projects. and 1 year XXX project

so i am familer with as400 XXX and

core banking bussiness logic(like XXXXX   and so on)

At begin XXXXX years i was in XXXXX  team.

which was responsed the coding, devloped and deployedment project

XXXX, I am go to XXXX, working for XXXX and my role as the TL

so my duty not only to do the project requirement

analysis and communicate with customers . but also train the new teammates and solve the Tenical issue

At first. our team don’t know about XXX  Busniesss and all teammate don’t contains working experince except me.  the XXXX was hard and the time urgently.  but at last we succesfully deliver the projects with highly quilities and hit the timeline. so we XXXXX

About two year later .  the XXXXX   was  replace the XXXXX  . so we was the first team to learning the XXXXX  knowledage. and to doing the XXXXX  projects like XXXXX   create and customer search.

At part time. I also would like to learning new thing. such  as XXXX  and PMP.

2. Simple English description ：

• The most profound work or project experience

• How?

• What kind of role do you play

3） Back to the Chinese question

• Why did you leave your last company

• If you encounter resource problems, how can you solve them

• The technical problems you encounter , How?

• What do you think your position is worth

• If you encounter communication problems , It's someone else's problem, but you can't solve it. How can you solve it

• Technical problems AS400 relevant

  How to let copy file Faster

  MOVEL , MOVE , MOVEL（P） The difference between

  If the front desk job Something went wrong , What would you do

*INLR What's the use

If processing lock problem   ？

appendix AS400 problem

Q1: Which library gets loaded first when we login to IBM i?

When we land 400 when , Which one is called first lib ?

answer ： yes QSYSlib , System lib

Q2: How to see all the objects in the library and their size?

How can I see one lib All of the following object And their size Information

answer ：DSPLIB , This command , If you are sometimes right object When you don't have authority , Sure dsplib notice *no authority .

Q3: How to check all members of a file?

What do you think of a file All of the following member

answer ： use DSPFD TYPE(*MBRLIST)

Q4: How to see all the record format in a file?

What do you think file All of the following record format

answer ：  use DSPFD command TYPE(*RCDFMT)

Q5: How to change the record size of a PF?

answer ：

CHGPF SIZE()

Q6: Why do we use the USROPN keyword in RPGLE?

answer ： You can open a file in real time , Or shut down , This is to prevent the file from being locked , In more than one online job Next, if the documents are not related for a long time

Q8: What is the purpose of using VARYING?

DVAR1             S             10A   VARYING

/Free

VAR1 = ‘HELLO’;

/End-Free

answer ： Dynamically set the length of the variable

Q10: Difference between CRTDUPOBJ and CPYF command?

answer ： One is cloning , You can copy your relationship , such as trigger And corresponding attributes

One is to copy files , Just keep consistent with the data .

CRTDUPOBJ will create the exact replica of an object such as LF would be LF.

CPYF is used to copy data and it makes LF a PF.

Q11: What are mandatory keywords for a Subfile?

answer :

SFL (Subfile format keyword)

SFLCTL (Subfile control format keyword)

SFLDSP (Subfile Display keyword)

SFLPAG (Subfile Page keyword)

SFLSIZ (Subfile Size keyword)

SFECTL

SFLSIZ(999)

OVERLAY

16 SFLDSP

SFLDSPCTL

17 SFLDLT

18 SFLCLR

19 SFLEND(*More)

Write SFL When , Start with initialization

Turn off    set off SFLDSP The lamp of *IN16

Turn off    set off SFLEND The lamp of *IN19 Because it's not worth

open   clear SFL The lamp of   *IN17

Turn off    off SFL The lamp of  *IN17

Write SFL subfile When ,

do loop the file

Write   subfile and RRN +1

enddo

Lighten up

set on SFLDSP *IN16/SFLEND *IN19

Q12: What is the difference between PLIST ad KLIST?

answer :

PLIST is list of parameters. Is a list of entry parameters

KLIST is list of key fields. Key List of fields

Q13: What is the difference between *INLR = *ON and RETURN?

answer :

RETURN will return the program to the caller.

End procedure

*INLR = *ON would free the memory and the program gets end.

End the program and clear the cache , It will help clear the corresponding values

Q14: What are the effective use and side effects of *INLR? How to overcome the side effects? Example use case scenarios?

answer :

Effective Use:

If *INLR = *OFF, return from called program, next call faster, program variable do not get reinitialized and program defined files do not get closed.

It's not lit up *INLR The cache will not be cleared , But it can make your program run faster .

But it will cause your files to be consistent , And the values of some variables will be accumulated without initialization .

Q15: What operations we can perform on Indicators?

answer :

SETON

SETOFF

Q16: How to check if a record is locked in RPGLE?

answer : stay file Later definition  *INFDS

If appear code 01218 Just explain file Corresponding record It's locked

It can also be used. indicate To judge

*STATUS INFDS, Code 01218

Q17: How we can execute a CL command from within RPG program without calling a CL program?

How the RPGLE It's executed inside  CL command

answer :

call  QCMDEXC API

QCAPCMD API

SYSTEM API (C API)

Q18: Can we use a file with the same file name and same record format name in RPGLE?

When there are repeated file Name in rpgle What do I do

answer :

No, but if we RENAME the record format name in F specs in RPG then Yes.

We can rename , use rename keyword

Q20: How to retrieve the RRN value of the file record in RPGLE?

How to get RRN stay RPGLE Inside :

answer ： use INFDS（RRN）

Using INFDS (file information data structure)

Q22: How can we display data from a flat-file?

answer :

RUNQRY

DSPPFM

Q23: Difference between READC and SFLNXTCHG?

answer :

READC for reading a changed record only once.

SFLNXTCHG was used with READC to read changed records multiple times.

Q24: Difference between ITER and DO?

answer :

ITER is a branching statement and control jump to ENDDO.

DO is a looping statement

Q25: Difference between RENAME and PREFIX?

answer ::

RENAME is used to rename the record format in the RPG program.

PREFIX is used to rename file fields in the RPG program.

Q26: How to debug a job that is in MSGW state?

Yes? debug some online job ？

answer ::

STRSRVJOB This job then  STRDBG Your program

Q27: How do you pass parameters in CL program?

answer ::

PARM keyword

Q28: What is a spool file?

What is the output pool file

answer ::

Used for printing , Put it in outq The data in it , You can use it. cpysplf Put the corresponding data copy come out

Printed output placed at OUTQ.

Q29: What does EXFMT do?

EXFMT do

answer :

Write first file Inside and read

Is to write the data first dsp Then read the data you entered

WRITE then READ.

Q32: What is the difference between PACKED and ZONED decimal?

P The type and Z The difference between types

answer :

The default is P type , stay rpgle Inside .

Packed - 1 digit - 1 byte

Zoned - 1 digit - 2 byte

Q34: How do you read a DSPF and Database file in CL program?

stay CL pgm How to read data inside

answer :

use RCVF command, This can be used CL To write DSP file Including a simple DSP

Q35: How do you declare more than one file in CL program?

stay CL pgm How to define the file

answer :

use Using DCLF and OPNID (open identifier)

Q37: Why do we use %SST in CL program?

answer :

To intercept data to a string

Q38: What is the difference between SFLPAG and SFLSIZ?

SFLPAG and SFLSIZ The difference between

answer :

SFLPAG is the number of records displayed on a Subfile screen at a time.

Represents how many lines are displayed on a page

SFLSIZ is the total number of records that can be loaded in a Subfile.

On behalf of the entire subfile Sure load How many rows? , At most, it seems 9999