Comments on: read PF member records using SQL400

By: The Most-Watched IT Questions: February 15, 2012 - ITKE Community Blog

The Most-Watched IT Questions: February 15, 2012 - ITKE Community Blog — Wed, 15 Feb 2012 17:10:25 +0000

[...] CharlieBrown explains how to read PF member records using [...]

By: pdsathishkumar

pdsathishkumar — Mon, 06 Feb 2012 05:45:16 +0000

Thanks Mr. Tom and Phil……..

i didn’t learn AS400 from any institution…. i have learning myself… so only i am asking like this question… both your helping for my career…

one more Thanks for you….

By: tomliotta

tomliotta — Sun, 05 Feb 2012 23:49:01 +0000

where we can use the QTEMP library… Every job has its own unique QTEMP library. If you create an object in QTEMP, no other job can see that object. Often, a file in QTEMP will be created from a CRTDUPOBJ command. An application might have an empty file description in that application's data library. Different jobs may duplicate that file description into QTEMP to have a private copy. The job can put data into the private file to use for temporary work without interference with or from other jobs that are doing the same kind of work. You might compile over the original file description in the main data library (the "template" file), and use OVRDBF to override to the temporary version in your QTEMP library at run time. When your job finishes, the QTEMP library goes away automatically. All temporary data goes away when the job ends. Tom

By: philpl1jb

philpl1jb — Sun, 05 Feb 2012 19:57:30 +0000

QTEMP can be used for objects that are Job specific.
Advantages
- Each job is certain of having unique set of the objects in QTEMP — workfile are a good example
- There is automatic cleanup, when Job ends Qtemp and all objects in Qtemp disappear
Disadvantages
- Any evidence in these objects that will help track down job problems are gone when job ends.
- These objects cannot generally be shared between jobs

By: pdsathishkumar

pdsathishkumar — Sun, 05 Feb 2012 17:06:13 +0000

thanks Mr. Phil, i got your points…

so, doesn’t we create the PF, LF and RPG program?

where we can use the QTEMP library…

By: philpl1jb

philpl1jb — Sun, 05 Feb 2012 12:57:40 +0000

if you;re using option 14 to compile the logical and it compiles in batch — it’s a seperate job stream and when it ends the logical ceases to exist.

By: philpl1jb

philpl1jb — Sun, 05 Feb 2012 12:19:58 +0000

From the message it appears that the logical was created.
Perhaps you are confused about the neature of the QTEMP library.
Scope of QtEMP – one job, DURATION of QTEMP – duration of that job
If your logical is created in a batch operation it will only be visible to that batch job and will only last until the batch job ends.
If you logical is creted bu an interative job (session) it is only visible in that session and will disappear when the session ends.
A batch job could issue the command CRTLF and then Compile an RPG program that uses the logical.
A batch job could issue the command CRTLF and then run an RPG program that uses the file.
So QTEMP is 1 temporary 2 issolated to the job.
Phil

By: pdsathishkumar

pdsathishkumar — Sun, 05 Feb 2012 09:06:13 +0000

Why PF and LF didn’t create in QTEMP…. any reason for it….

By: tomliotta

tomliotta — Sun, 05 Feb 2012 08:48:17 +0000

i ll show error.. that is ” Message . . . . : File TEST3 created in library QTEMP.”

Text from a message is usualy not helpful to someone else. The message identifier is more important. More than one message identifier can have the same text.

please give me a suggestion…

However, in this case, it doesn’t matter because that isn’t an error message. The file was created in QTEMP just as you asked for.

There is no suggestion possible because there is nothing wrong.

Tom

By: pdsathishkumar

pdsathishkumar — Sat, 04 Feb 2012 16:50:38 +0000

i don’t know, i think this is right place for my another one question,

i created PF in my library (lib1) and i tried to create LF for my PF in QTEMP library. but i can’t create it… i ll show error.. that is ” Message . . . . : File TEST3 created in library QTEMP.”
please give me a suggestion…