Jruby -v failing with possible Java version issue

[Ruby Student]

[Note: parts of this message were removed to make it a legal post.]

Hello team,

I installed jruby 1.6.1, as fully described below.
When I run the *jruby -v* command, it fails. Please see output at the end of
this post.

Downloaded file:
*jruby-bin-1.6.1.tar*

When I verify Java on the Oracle site, I get the following:

Your Java is Working
Java update available

Your Java configuration is as follows:

Vendor: *IBM Corporation* <http://java.com/>
Version: *Java SE 6*
Operating System: *Linux 2.6.32-71.24.1.el6.x86_64*
Architecture: *amd64*
*
*
*
*
*root@myserver # /opt/jruby* -ls -l
-rw-r--r-- 1 root root 1799 Apr 12 12:23 README
-rw-r--r-- 1 root root 2572 Apr 12 12:23 LICENSE.RUBY
-rw-r--r-- 1 root root 113210 Apr 12 12:23 COPYING
drwxr-xr-x 2 root root 4096 Apr 12 12:26 bin
drwxr-xr-x 6 root root 4096 May 12 08:20 samples
drwxr-xr-x 4 root root 4096 May 12 08:20 lib
drwxr-xr-x 5 root root 4096 May 12 08:20 docs
drwxr-xr-x 3 root root 4096 May 12 08:20 tool
drwxr-xr-x 3 root root 4096 May 12 08:20 share
drwxr-xr-x 2 root root 4096 May 12 08:22 jruby-1.6.1

root@myserver # *echo $PATH*
/sbin:/usr/sbin:/usr/local/sbin:/opt/gnome/sbin:/root/bin:/usr/local/bin:/usr/bin:/usr/X11R6/bin:/bin:/usr/games:/opt/gnome/bin:/opt/kde3/bin:/usr/lib64/jvm/jre/bin:/usr/lib/mit/bin:/usr/lib/mit/sbin:
*/opt/jruby/bin*
:/usr/local/bin:/usr/local/sbin:/suptools/bin:.:/opt/jruby/bin

When I try *jruby -v*, this is what I get:

root@myserver # jruby -v
JVMJ9VM007E Command-line option unrecognised: -client
Could not create the Java virtual machine.

Usage: java [-options] class [args...]
(to execute a class)
or java [-jar] [-options] jarfile [args...]
(to execute a jar file)

where options include:
-cp -classpath <directories and zip/jar files separated by :>
set search path for application classes and resources
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version
-showversion print product version and continue
-? -help print this help message
-X print help on non-standard options
-assert print help on assert options

Any help will be appreciated!

Thank you

 

[Matt Lawrence]

Hello team,

I installed jruby 1.6.1, as fully described below.
When I run the *jruby -v* command, it fails. Please see output at the end of
this post.

I dug into this a few months ago. It looks like the IBM implementation of
Java doesn't support the "-client" command line switch. I wound up
switching to a different version of Java.

-- Matt
It's not what I know that counts.
It's what I can remember in time to use.

 

[Matthew K. Williams]

Hello team,

I installed jruby 1.6.1, as fully described below.
When I run the *jruby -v* command, it fails. Please see output at the end of
this post.

Downloaded file:
*jruby-bin-1.6.1.tar*

When I verify Java on the Oracle site, I get the following:

Your Java is Working
Java update available

Your Java configuration is as follows:

Vendor: *IBM Corporation* <http://java.com/>
Version: *Java SE 6*
Operating System: *Linux 2.6.32-71.24.1.el6.x86_64*
Architecture: *amd64*

I'm not sure if the IBM Java supports all the flags which Sun/Oracle java
supports.

root@myserver # *echo $PATH*
/sbin:/usr/sbin:/usr/local/sbin:/opt/gnome/sbin:/root/bin:/usr/local/bin:/usr/bin:/usr/X11R6/bin:/bin:/usr/games:/opt/gnome/bin:/opt/kde3/bin:/usr/lib64/jvm/jre/bin:/usr/lib/mit/bin:/usr/lib/mit/sbin:
*/opt/jruby/bin*
:/usr/local/bin:/usr/local/sbin:/suptools/bin:.:/opt/jruby/bin

Your path looks really weird here.

Also, I think that jruby requires the jdk, not the jre.

When I try *jruby -v*, this is what I get:

root@myserver # jruby -v
JVMJ9VM007E Command-line option unrecognised: -client
Could not create the Java virtual machine.

try a

which java

and a

java -version

But I do believe there's an issue with IBM's java version.

Matt

 

[Ruby Student]

Hi,

This is the output of the commands suggested:

root@myserver # which java
/usr/bin/java

root@myserver # java -version
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 2.2)
IBM J9SE VM (build 2.2, J2RE 1.4.2 IBM J9 2.2 Linux amd64-64
j9xa64142-20061124 (JIT enabled)
J9VM - 20061121_1035_LHdSMr
JIT - r7_level20061020_1803)

My path:

root@myserver # echo $PATH
/sbin:/usr/sbin:/usr/local/sbin:/opt/gnome/sbin:/root/bin:/usr/local/bin:/u=
sr/bin:/usr/X11R6/bin:/bin:/usr/games:/opt/gnome/bin:/opt/kde3/bin:/usr/lib=
64/jvm/jre/bin:/usr/lib/mit/bin:/usr/lib/mit/sbin:/opt/jruby/bin:/usr/local=
/bin:/usr/local/sbin:/suptools/bin:.

Thank you

On Fri, 13 May 2011, Ruby Student wrote:

Hello team,

I'm not sure if the IBM Java supports all the flags which Sun/Oracle java
supports.



root@myserver # *echo $PATH* :/usr/bin:/usr/X11R6/bin:/bin:/usr/games:/opt/gnome/bin:/opt/kde3/bin:/usr/=
lib64/jvm/jre/bin:/usr/lib/mit/bin:/usr/lib/mit/sbin:
Your path looks really weird here.

Also, I think that jruby requires the jdk, not the jre.


When I try *jruby -v*, this is what I get:
try a

which java

and a

java -version

But I do believe there's an issue with IBM's java version.

Matt

--=20
Ruby Student

 

[Matthew K. Williams]

Hi,

This is the output of the commands suggested:

root@myserver # which java
/usr/bin/java

root@myserver # java -version
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 2.2)
IBM J9SE VM (build 2.2, J2RE 1.4.2 IBM J9 2.2 Linux amd64-64
j9xa64142-20061124 (JIT enabled)
J9VM - 20061121_1035_LHdSMr
JIT - r7_level20061020_1803)

1.4.2 won't work. You need java 1.6. FWiW, Java 1.4 was sunsetted a
number of years ago. 1.5 was sunset in 2009, I believe.

And IBM Java won't work.

Matt

 

[Ruby Student]

[Note: parts of this message were removed to make it a legal post.]

But I have 1.6, I installed it.
If I go to the Oracle site and run their applet to verify the java version,
I get the following:

When I verify Java on the Oracle site, I get the following:

Your Java is Working
Java update available

Your Java configuration is as follows:

Vendor: *IBM Corporation* <http://java.com/>
Version: *Java SE 6*
Operating System: *Linux 2.6.32-71.24.1.el6.x86_64*
Architecture: *amd64*

Perhaps, like you said, I have to switch from IBM to Oracle version.
I don't want to remove the IBM version since it might be used by some
application on the server, but I am wondering if I can have multiple Java
versions from different vendors.

Thank you

 

[Phillip Gawlowski]

Perhaps, like you said, I have to switch from IBM to Oracle version.
I don't want to remove the IBM version since it might be used by some
application on the server, but I am wondering if I can have multiple Java
versions from different vendors.

Yes, you can. Just make sure to install OpenJRE/OpenJDK to its own
directory, and specify this version whenever you want to use JRuby.

Then, you can test if the Oracle version makes any of your other apps
fail, before migrating over (if you want to).

You should also post JRuby specific questions one mailinglist over on
JRuby-user. There's the experts who can help you with both Java and
JRuby issues.

--
Phillip Gawlowski

Though the folk I have met,
(Ah, how soon!) they forget
When I've moved on to some other place,
There may be one or two,
When I've played and passed through,
Who'll remember my song or my face.

 

[Matthew K. Williams]

But I have 1.6, I installed it.

That may be the case, however, when you ran java -version, it says 1.4.2

So that's the one which is first in your path.

If I go to the Oracle site and run their applet to verify the java version,
I get the following:

When I verify Java on the Oracle site, I get the following:

Your Java is Working
Java update available

Your Java configuration is as follows:

Vendor: *IBM Corporation* <http://java.com/>
Version: *Java SE 6*
Operating System: *Linux 2.6.32-71.24.1.el6.x86_64*
Architecture: *amd64*

How are you verifying this???? Via a browser or an applet? That does not
necessarily count.

Perhaps, like you said, I have to switch from IBM to Oracle version.
I don't want to remove the IBM version since it might be used by some
application on the server, but I am wondering if I can have multiple Java
versions from different vendors.

Yes, you can. It is controlled by your path. Just make sure that the
version you want to use comes first in the path.

Matt

 

[Ruby Student]

[Note: parts of this message were removed to make it a legal post.]

OK gents, I installed Java 1.6 and pointed to it via the JAVA_HOME
environmental variable. It looks like it worked.

jruby -v
jruby 1.6.1 (ruby-1.8.7-p330) (2011-04-12 85838f6) (Java HotSpot(TM) 64-Bit
Server VM 1.6.0_25) [linux-amd64-java]

Thank you for your help!

 

[Charles Oliver Nutter]

OK gents, I installed Java 1.6 and pointed to it via the JAVA_HOME
environmental variable. It looks like it worked.

jruby -v
jruby 1.6.1 (ruby-1.8.7-p330) (2011-04-12 85838f6) (Java HotSpot(TM) 64-Bit
Server VM 1.6.0_25) [linux-amd64-java]

Thank you for your help!

Just saw this thread today...

If you (or anyone else) need to use IBM JDK and get that "-client"
error, you can pass "--noclient" to JRuby to disable that flag.
Normally we pass -client to the JVM because on Hotspot/OpenJDK (by far
the most widely used) it helps startup time a lot. Unfortunately it's
not a standard flag.

- Charlie

 

[Ruby Student]

[Note: parts of this message were removed to make it a legal post.]

Charlie,

Thank you for the info. I am sure it will become useful.

Thanks again,

OK gents, I installed Java 1.6 and pointed to it via the JAVA_HOME
environmental variable. It looks like it worked.

jruby -v
jruby 1.6.1 (ruby-1.8.7-p330) (2011-04-12 85838f6) (Java HotSpot(TM) 64-Bit
Server VM 1.6.0_25) [linux-amd64-java]

Thank you for your help!

Just saw this thread today...

If you (or anyone else) need to use IBM JDK and get that "-client"
error, you can pass "--noclient" to JRuby to disable that flag.
Normally we pass -client to the JVM because on Hotspot/OpenJDK (by far
the most widely used) it helps startup time a lot. Unfortunately it's
not a standard flag.

- Charlie