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  1.  Home
  2. MIDRANGE-L
  3. September 2017

RE: Accesssing External Databases

This error is not saying that the jar exists in the classpath variable, it
is saying that the environment variable exists. It is an all or nothing
replacement. You are going to have to read the environment variable,
concatenate what you want to add, and then replace it. Problem is, once the
jvm is started, you can't change the classpath. My CLP that initializes the
jvm sets the whole classpath right from the start all in one shot, and it
includes everything the job could possibly want. I know my machine, and the
Java programs running on it, so I know what needs to be in the classpath up
front.

On Sep 14, 2017 8:28 AM, "Alan Shore" <ashore@xxxxxxxx> wrote:

Hi everyone
I am looking at the ADDENVVAR command
Specifically

ADDENVVAR ENVVAR(CLASSPATH) VALUE('/java/jdbc/jtds-1.3.1.jar')

When I try this, I receive the message

Environment variable name exists.
Taking and F1 on that message, I see


Additional Message Information

Message ID . . . . . . : CPFA980 Severity . . . . . . . : 40
Message type . . . . . : Information
Date sent . . . . . . : 09/14/17 Time sent . . . . . . :
08:17:01

Message . . . . : Environment variable name exists.
Cause . . . . . : You tried to add an environment variable (ADDENVVAR),
'CLASSPATH', of level *JOB, that already exists.
Recovery . . . : Do one of the following:
- Specify the REPLACE(*YES) option to replace the existing value with
the
new value.
- Use the CHGENVVAR command to change the specified environment
variable.
- Retry the command with an environment variable that does not exist.

I then enter the command WRKENVVAR and choose CLASSPATH to display
The following is displayed
Name . . . . . . . . . : CLASSPATH


Value . . . . . . . . . : '/QIBM/ProdData/OS400/jt400/
lib/jt400Native.jar:/QI
BM/ProdData/OS400/jt400/lib/jt400Native11x.jar:/QIBM/
ProdData/OS400/jt400/MRI292
4/jt400Mri.jar:/QIBM/ProdData/Java400/ext/IBMmisc.jar:/QIBM/
ProdData/Java400/ext
/db2_classes.jar:/QIBM/ProdData/Java400/ext/jssl.jar:
/QIBM/ProdData/Java400/ext/
ibmjssl.jar:/QIBM/ProdData/Java400/ext/db2jcc.jar:/QIBM/
ProdData/Java400/ext/db2
jcc_license_cu.jar:.'


Now if '/java/jdbc/jtds-1.3.1.jar' already exists in the CLASSPATH - how
come I don't see it in the display?
Is it contained within one of these
/QIBM/ProdData/OS400/jt400/lib/jt400Native.jar:
/QIBM/ProdData/OS400/jt400/lib/jt400Native11x.jar:
/QIBM/ProdData/OS400/jt400/MRI2924/jt400Mri.jar:
/QIBM/ProdData/Java400/ext/IBMmisc.jar:
/QIBM/ProdData/Java400/ext/db2_classes.jar:
/QIBM/ProdData/Java400/ext/jssl.jar:
/QIBM/ProdData/Java400/ext/ibmjssl.jar:
/QIBM/ProdData/Java400/ext/db2jcc.jar:
/QIBM/ProdData/Java400/ext/db2jcc_license_cu.jar:.'

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
'If you're going through hell, keep going.'
Winston Churchill

From: Alan Shore
Sent: Wednesday, September 13, 2017 7:17 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: RE: Accesssing External Databases

HI Charles
Appreciated



Sent via the Samsung GALAXY S(r) 5, an AT&T 4G LTE smartphone


-------- Original message --------
From: Charles Wilt <charles.wilt@xxxxxxxxx<mailto:charles.wilt@xxxxxxxxx>>
Date: 9/13/17 4:59 PM (GMT-05:00)
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx<mailto:
midrange-l@xxxxxxxxxxxx>>
Subject: Re: Accesssing External Databases
Yep, do a 2=Change from WRKENVVAR

Just tack it into the the end with a : before it...

Charles


On Wed, Sep 13, 2017 at 2:46 PM, Alan Shore <ashore@xxxxxxxx<mailto:ashore
@nbty.com>> wrote:

AGGGGGHHHHHHHHHHHHHHHHHHHHH
Ye gods

Didn't even see THAT

So I entered this command
ADDENVVAR ENVVAR(CLASSPATH) VALUE('/java/jdbc/jtds-1.3.1.jar')
And it came back with this message
Environment variable name exists.
When I use the command WRKENVVAR and take the option to display CLASSPATH,
it shows

Value . . . . . . . . . : '/QIBM/ProdData/OS400/jt400/
lib/jt400Native.jar:/QI
BM/ProdData/OS400/jt400/lib/jt400Native11x.jar:/QIBM/
ProdData/OS400/jt400/MRI292
4/jt400Mri.jar:/QIBM/ProdData/Java400/ext/IBMmisc.jar:/QIBM/
ProdData/Java400/ext
/db2_classes.jar:/QIBM/ProdData/Java400/ext/jssl.jar:
/QIBM/ProdData/Java400/ext/
ibmjssl.jar:/QIBM/ProdData/Java400/ext/db2jcc.jar:/QIBM/
ProdData/Java400/ext/db2
jcc_license_cu.jar:.'

Is there a limit as to what is in the CLASSPATH?

Should I use the option 2 to change the value?
Is it just a case of inserting at the end?

What value needs to be inserted there for VALUE('/java/jdbc/jtds-1.3.1.
jar')

Alan Shore
E-mail : ASHORE@xxxxxxxx<mailto:ASHORE@xxxxxxxx>
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
'If you're going through hell, keep going.'
Winston Churchill


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Charles Wilt
Sent: Wednesday, September 13, 2017 4:36 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx<mailto:
midrange-l@xxxxxxxxxxxx>>
Subject: Re: Accesssing External Databases

Alan,

I copied & pasted the command you had in your message.

The file is jtds

The command you had in your post is jdts..

Either you copied & pasted wrong, or you have a type on the command.

And in answer to your other question, yes WBOHQECDB01 needs to resolve.
Preferably via DNS as opposed to a host table entry.

Charles.

On Wed, Sep 13, 2017 at 2:27 PM, Alan Shore <ashore@xxxxxxxx<mailto:ashore
@nbty.com>> wrote:

Hi Charles
When I look in the ifs directory
/java/jdbc
The jar file is out there as
jtds-1.3.1.jar

So I believe my command is correct

Alan Shore
E-mail : ASHORE@xxxxxxxx<mailto:ASHORE@xxxxxxxx>
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
'If you're going through hell, keep going.'
Winston Churchill


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Charles Wilt
Sent: Wednesday, September 13, 2017 4:18 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx<
mailto:midrange-l@xxxxxxxxxxxx>>
Subject: Re: Accesssing External Databases

typo s/b
jtds-1-3-1.jar

but you show
3. I executed the command
ADDENVVAR ENVVAR(CLASSPATH) VALUE('/java/jdbc/jdts-1.3.1.jar')

Charles

On Wed, Sep 13, 2017 at 2:16 PM, Charles Wilt <charles.wilt@xxxxxxxxx<
mailto:charles.wilt@xxxxxxxxx>>
wrote:

Alan,

Use WRKJVMJOB to look at the JVM in your job...

In particular, the classpath still doesn't seem to be getting set
right.

Note, it's
jtds-1.1.1.jar

not
jdts-1.3.1.jar

that you have shown in your post ADDENVVAR post :)

Charles

On Wed, Sep 13, 2017 at 2:08 PM, Alan Shore <ashore@xxxxxxxx<mailto:
ashore@xxxxxxxx>> wrote:

Hi Dave
I noticed that as well
I thought that I was just being ignored Im used to being ignored -
Im married

Alan Shore
E-mail : ASHORE@xxxxxxxx<mailto:ASHORE@xxxxxxxx>
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
'If you're going through hell, keep going.'
Winston Churchill


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of dlclark@xxxxxxxxxxxxxxxx<mailto:dlclark@xxxxxxxxxxxxxxxx>
Sent: Wednesday, September 13, 2017 3:57 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx<
mailto:midrange-l@xxxxxxxxxxxx>>
Subject: RE: Accesssing External Databases

"MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx<mailto:
midrange-l-bounces@xxxxxxxxxxxx>> wrote on 09/13/2017
03:51:10 PM:
From: Alan Shore <ashore@xxxxxxxx<mailto:ashore@xxxxxxxx>>
To: Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxx<mailto:midrange-l@xxxxxxxxxxxx>>
Date: 09/13/2017 03:51 PM
Subject: RE: Accesssing External Databases Sent by: "MIDRANGE-L"
<midrange-l-bounces@xxxxxxxxxxxx<mailto:midrange-l-bounces@
midrange.com>>

Thanks for your reply Dave
Just found out about that, less than 20 minutes ago'I will need
to investigate it

Alan Shore

What is strange is that, as you can see, I sent my message
at
11:15 AM this morning but it apparently took until 3:51 PM to appear
on
the list. Sorry you had to wait so long for this information. ;-)


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On
Behalf Of dlclark@xxxxxxxxxxxxxxxx<mailto:dlclark@xxxxxxxxxxxxxxxx>
Sent: Wednesday, September 13, 2017 11:14 AM
To: Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxx<mailto:midrange-l@xxxxxxxxxxxx>>
Subject: Re: Accesssing External Databases

"MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx<mailto:
midrange-l-bounces@xxxxxxxxxxxx>> wrote on
09/13/2017
10:57:31 AM:
Before I forget, we are on V7r1

I have been asked to investigate how we can connect to an
external
database
Google search presented the following web page
http://www.scottklement.com/jdbc/


That is one method. We went a different route -- because
it allowed us to use standard embedded SQL in our RPG programs
and is better for performance because it prestarts a shared JVM
for all jobs to use. We downloaded a free, Source Forge project
from one of the members of this list (Dieter) called ApPServer4RPG:
https://sourceforge.net/projects/appserver4rpg/

Sincerely,

Dave Clark
--
int.ext: 91078
direct: (937) 531-6378
home: (937) 751-3300

Winsupply Group Services
3110 Kettering Boulevard
Dayton, Ohio 45439 USA
(937) 294-5331




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