Re: Java Error was Tomcat java properties question

http://www-912.ibm.com/s_dir/slkbase.nsf/slkbase

And search on PASE there are a couple of links for recommended PTF's.

Pete


Hatzenbeler, Tim wrote:

Thanks for your answer...

Its weird...

If I do a simple hello world, and run it... It's fine...

But when I add those system properties, I get a pase class error, when I do
a -verbose , and I get a java return code of 1.

No dump or exception is thrown...

Maybe I don't have a current enough ptf...

Thanks, Tim



-----Original Message-----
From: web400-bounces+thatzenbeler=clinitech.net@xxxxxxxxxxxx
[mailto:web400-bounces+thatzenbeler=clinitech.net@xxxxxxxxxxxx] On Behalf Of
Pete Helgren
Sent: Wednesday, February 08, 2006 8:19 AM
To: Web Enabling the AS400 / iSeries
Subject: Re: [WEB400] Java Error was Tomcat java properties question

Let me scroll back a bit.

There are some Java programs that require the use of a graphics engine in
order to render the graphic components.  For example, we use Jasper Reports
to generate PDF reports and iChart to generate charts on the iSeries using
Java (mostly java servlets).

The first time we used Jasper, we got the error message about the need to
have java.awt.headless=true in the properties file.  Installing PASE and
then setting these values in the
'/QIBM/UserData/Java400/SystemDefault.properties' file is what took care of
the error for us.  As I mentioned both in the post from last year and the
latest post, I am not sure what it took to make the system finally read the
file.  I suspect that it was because we had an instance of Java running
somewhere (either a Tomcat app or some other Java app). Once we ended the
java app the next instantiation must have used the new settings because the
error went away.

When we install the applications at our customers site, we make sure that
PASE is installed and the properties file configured before we fire up a
Java app and I haven't had the experience of it NOT working since our own
first experience.

We start nothing in PASE.  We submit no jobs or use any shell.  The ONLY
shell command we use is to start Tomcat.  So, no, I don't think it is
necessary to call any programs or run any shell commands in order for your
java program to render graphics using AWT "headless".  Again, we make sure
PASE is installed and we make sure the SystemDefault.properties file is set,
and it has worked for us.
The entire file contents are as follows:

java.home=/QIBM/ProdData/Java400/jdk14/ java.version=1.4 os400.awt.native=true java.awt.headless=true user.timezone=America/Denver

Of course this would mean that you have the jdk 1.4 version installed on
your iSEries (licensed program 5722JV1 6  Java Developer Kit 1.4).

If all of that is true for you, then I am as stumped as you.  You could
check it after your next IPL or you could try calling IBM and see if they
have suggestions.

Pete

P.S.  If you actually *wanted* VNC running, you'd need to have 5722PTL
installed and use the directions found at this link:

http://www-03.ibm.com/servers/enable/site/porting/tools/vnc.html but again,
there is no need to have it running in order to run Java programs using AWT
in headless mode.




Hatzenbeler, Tim wrote:

To make this work do I need to run this first?

CALL PGM(QSYS/QP2SHELL)
PARM('/QOpenSys/QIBM/ProdData/DeveloperTools/vnc/vncserver_java' ':1')

I'm not running NAWT... Should this be running when I set the headless value to true?

Thanks, Tim


-----Original Message-----

From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Pete Helgren

Sent: Monday, February 06, 2006 1:16 PM
To: Web Enabling the AS400 / iSeries
Subject: Re: [WEB400] Java Error was Tomcat java properties question

We start Tomcat from a CL that calls the Qshell commands so, no, it isn't necessary to be running it interactively from the shell in order for this to work.

This is ringing a bell in my head because I *know* we had this problem before and resolved it. This entry is in the archives:

http://archive.midrange.com/java400-l/200501/msg00051.html

The only other thing I saw in the thread was that the

java.home=/QIBM/ProdData/Java400/jdk14/
java.version=1.4

was needed.  What version of the JVM are you running?

Pete


Hatzenbeler, Tim wrote:

I do have that installed... Do I have to be in a qp2term session when I start tomcat? Or will the jvm automagically tap in to pase?

Thanks, Tim

-----Original Message-----
From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx]
On Behalf Of Pete Helgren
Sent: Monday, February 06, 2006 12:36 PM
To: Web Enabling the AS400 / iSeries
Subject: Re: [WEB400] Java Error was Tomcat java properties question

Tim,

Sorry if I asked this or you mentioned this before:

Do you have PASE installed? ("OS/400 - Portable App Solutions Environment" licensed program 5722SS1 Option 33)

You will need to have it installed for the graphics engine referred to by AWT.

Make sure that all JVM instances aren't running. I remember that at first I couldn't get it to work. Can't remember what, exactly, it took after PASE was installed but I think Tomcat had to be restarted and any JVM instances ended before it started to work.

Pete


Hatzenbeler, Tim wrote:

I changed my config, to only have those 2 lines...

And I'm still getting this error...

AWT class or API used without specifying property os400.awt.native=true or java.awt.headless=true

Is there a quick way, in a jsp, to pull these properties values, and show them on the screen,to see what there set to? Mayby tomcat, is overriding the values..

Thanks, Tim


-----Original Message-----

From: web400-bounces@xxxxxxxxxxxx [mailto:web400-bounces@xxxxxxxxxxxx]

On Behalf Of Pete Helgren
Sent: Friday, February 03, 2006 8:48 PM
To: Web Enabling the AS400 / iSeries
Subject: Re: [WEB400] Java Error was Tomcat java properties question

Skip the java.home and java.version stuff, we use that to point to a specific JVM

Use only :

os400.awt.native=true java.awt.headless=true

and see what happens.

Pete

Hatzenbeler, Tim wrote:

This is in our file:

java.home=/QIBM/ProdData/Java400/jdk14/

java.version=1.4 os400.awt.native=true java.awt.headless=true ------------------------------------

I'm running 5.2


If I use those settings, tomcat doesn't want to work...

I removed them, and placed them in the catalina.sh, and I got the same error...

"$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
 -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
 -Dcatalina.base="$CATALINA_BASE" \
 -Dcatalina.home="$CATALINA_HOME" \
--->  -Djava.awt.headless=true \
 -Djava.io.tmpdir="$CATALINA_TMPDIR" \
 org.apache.catalina.startup.Bootstrap "$@" start \
 >> "$CATALINA_BASE"/logs/catalina.out 2>&1 &

 if [ ! -z "$CATALINA_PID" ]; then
   echo $! > $CATALINA_PID

fi

40   02/03/06  15:34:59.128760  realcftrap2              0018F8

QJVAJNI

QSYS        *STMT
To module . . . . . . . . . :   QJVAJNI

To procedure  . . . . . . . :   JNI_CreateJavaVM

Statement . . . . . . . . . :   5529

Message . . . . :   The Java Virtual Machine has ended.

Cause . . . . . :   Java Virtual Machine 1 has ended because of reason

4. The reason codes are defined as follows: 01- A Java program called the

 java.lang.System.exit method with a zero status code. 02- A Java

program called the java.lang.System.exit method with a non zero status code

of

0. 03- An unexpected system error was detected. 04- A critical Java Virtual Machine thread has ended and processing cannot continue. Recovery .

.

. : If the Java Virtual Machine ended because of reason code 03, an internal error has occurred. Contact you service representative. Information about the error was saved in the Licensed Internal Code log.

40   02/03/06  15:34:59.254304  QJVAUTLJVM   QSYS        *STMT

QJVAJVM

QSYS        *STMT
From module . . . . . . . . :   QJVAUTLJVM

From procedure  . . . . . . :   JvaSendMsg

Do I need to launch tomcat through the pase enviornment? Or just the standard strqsh?

I'm struggling here...

Thanks, Tim

-----Original Message-----
From: web400-bounces@xxxxxxxxxxxx
[mailto:web400-bounces@xxxxxxxxxxxx]
On Behalf Of Pete Helgren
Sent: Friday, February 03, 2006 1:41 PM
To: Web Enabling the AS400 / iSeries
Subject: Re: [WEB400] Tomcat java properties question

You don't set it for an app, you just set the general property in the /QIBM/UserData/Java400/SystemDefault.properties file

This is in our file:

java.home=/QIBM/ProdData/Java400/jdk14/

java.version=1.4 os400.awt.native=true java.awt.headless=true

HTH

Pete Helgren


Hatzenbeler, Tim wrote:

I have a webapp, that is giving me this error message...

AWT class or API used without specifying property os400.awt.native=true or java.awt.headless=true

How would I set the headless = true, for an app in tomcat?

Thanks, Tim

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