IBM AS/400 manual Ile Rpg, Differences Between OPM RPG/400

Differences Between OPM RPG/400	and	ILE RPG
In ILE RPG, the total number					of	program	devices	that can be	acqui
program		cannot	be	different	from	the maximum number of devices			defi
the	device		file.	OPM RPG/400	allows this		through	the NUM option.

7.In ILE RPG, the ACQ and REL operation codes can be used with sing files.

8.In ILE RPG, the relative record number and key fields in the dat feedback section of the INFDS are updated on each input operation doing blocked reads.

9. When a referential constraint error occurs		in	OPM RPG/400, the		status
set to	"01299" (I/O error). In ILE RPG, the		status code	is	set
"01222", or "01299", depending on the type		of	referential	constraint
occurs:

¹If data management is not able to allocate a record due to a constraint error, a CPF502E notify message is issued. ILE RPG will status code to "01222" and OPM RPG/400 will set the status code "01299".

If

you

have

no

error

indicator,

'E'

extender,

or

INFSR

error

su

RPG

will issue the RNQ1222 inquiry

message,

and

OPM

RPG/400

will

issue

the

RPG1299

inquiry

message.

The main

difference

between

two

messages is that RNQ1222 allows

you

to

retry

the

operation.

¹ If

data management detects a referential constraint error

that

to

issue

either

a

CPF503A,

CPF502D, or

CPF502F

notify

message, ILE

RPG

will set the status code to

"01022"

and OPM

RPG/400

will

set

status

code

to

"01299".

If

you

have

no

error

indicator,

'E'

extender,

or

INFSR

error

su

RPG

will issue the RNQ1022 inquiry

message,

and

OPM

RPG

will

issue

the

RPG1299

inquiry

message.

¹All referential constraint errors detected by data management tha

data	management	to issue an	escape	message will cause both OPM a
ILE	RPG to set	the status	code to	"01299".

10.In ILE RPG, the database-specific feedback section of the INFDS regardless of the outcome of the I/O operation. In OPM RPG/400, th

section is not updated if the record-not-found condition is encounter

11. ILE RPG relies more on data-management error

handling

than does

OPM

RPG/400.

This

means

that

in

some

cases

you

will

find

certain

error m

in

the

job log

of

an

ILE

RPG

program,

but not

an

OPM

RPG/400

program.

Some differences

you

will

notice

in

error

handling

are:

¹

When

doing

an

UPDATE

on

a

record

in

a

database file that has n

locked

by

a

previous

input operation, both

ILE RPG and OPM RPG/400

the status code to "01211". ILE RPG

detects

this

situation

whe

agement

issues

a

CPF501B

notify

message

and

places

it

in

the

job

¹

When

handling

WORKSTN

files

and

trying

to

do

I/O

to

a

device

tha

not been acquired or defined, both ILE and OPM

RPG

will

set

the

"01281". ILE RPG detects this situation

when

data

management issue

CPF5068

escape message and places it

in

the

job

log.

12. When

doing

READE,

REDPE

(READPE

in

ILE),

SETLL

on

a

database

file,

or

when doing sequential-within-limits processing by a record-address-file, RPG/400 does key comparisons using the *HEX collating sequence. This ma

376 ILE RPG for AS/400 Programmer's Guide