Java Update Fix

1st let's understand the problem.
Everything was working swimmingly & all the apps that depend on Java access were working; but, after an online update that added a series of Java updates, you can no longer start those apps as follows:

jim@am2:~> azureus
Cannot find java virtual machine, aborting.

or

jim@am2:~> openproj %F
Java auto-detection...
Checking java
****Error
Java not found or incorrect version.
Please install Sun JRE 1.5+ or set JAVA_HOME environment variable if it's already installed.

So, let's start following the links:
(anywhere you see a "#" means I'm in a terminal as root in the following code)

jim@am2:~>**which java
/usr/bin/java

Next we go there & follow the links

jim@am2:~> ls -l /usr/bin/java
lrwxrwxrwx 1 root root 22 2007-10-07 11:57 /usr/bin/java -> /etc/alternatives/java

continue

jim@am2:~> ls -l /etc/alternatives/java
lrwxrwxrwx 1 root root 40 2007-10-17 19:58 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.6.0.u1-sun/bin/java**<---
jim@am2:~>

continue

jim@am2:~> cd /usr/lib64/jvm
jim@am2:/usr/lib64/jvm> ls -l
total 8
drwxr-xr-x 3 root root 4096 2007-10-22 09:59 java-1.5.0-sun-1.5.0_update13
drwxr-xr-x 3 root root 4096 2007-10-22 09:59 java-1.6.0.u3-sun-1.6.0.u3
lrwxrwxrwx 1 root root** 21 2007-10-07 11:57 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root** 27 2007-10-07 11:57 jre-1.5.0 -> /etc/alternatives/jre_1.5.0
lrwxrwxrwx 1 root root** 33 2007-10-23 22:01 jre-1.5.0-sun -> java-1.5.0-sun-1.5.0_update13/jre
lrwxrwxrwx 1 root root** 30 2007-10-07 16:53 jre-1.6.0.u1 -> /etc/alternatives/jre_1.6.0.u1************<---
lrwxrwxrwx 1 root root** 30 2007-10-17 19:58 jre-1.6.0.u3 -> /etc/alternatives/jre_1.6.0.u3************<---
lrwxrwxrwx 1 root root** 30 2007-10-23 21:59 jre-1.6.0.u3-sun -> java-1.6.0.u3-sun-1.6.0.u3/jre
lrwxrwxrwx 1 root root** 25 2007-10-07 11:57 jre-sun -> /etc/alternatives/jre_sun
jim@am2:/usr/lib64/jvm>

Ah Ha, a quick look in /usr/lib64/jvm shows that I have java-1.6.0.u3-sun-1.6.0.u3 (from the update) and jre_1.6.0.u1 is long gone. However, as seen marked above, the sym-links did not get re-written correctly.
***You must check for your installed version.***

Let's fix it:

jim@am2:/usr/lib64/jvm> su
Password:
am2:/usr/lib64/jvm # rm jre-1.6.0.u1

now check that it is gone

am2:/usr/lib64/jvm # ls -l
total 8
drwxr-xr-x 3 root root 4096 2007-10-22 09:59 java-1.5.0-sun-1.5.0_update13
drwxr-xr-x 3 root root 4096 2007-10-22 09:59 java-1.6.0.u3-sun-1.6.0.u3
lrwxrwxrwx 1 root root** 21 2007-10-07 11:57 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root** 27 2007-10-07 11:57 jre-1.5.0 -> /etc/alternatives/jre_1.5.0
lrwxrwxrwx 1 root root** 33 2007-10-23 22:01 jre-1.5.0-sun -> java-1.5.0-sun-1.5.0_update13/jre
lrwxrwxrwx 1 root root** 30 2007-10-17 19:58 jre-1.6.0.u3 -> /etc/alternatives/jre_1.6.0.u3**************<-------what we want
lrwxrwxrwx 1 root root** 30 2007-10-23 21:59 jre-1.6.0.u3-sun -> java-1.6.0.u3-sun-1.6.0.u3/jre
lrwxrwxrwx 1 root root** 25 2007-10-07 11:57 jre-sun -> /etc/alternatives/jre_sun
-rw-r--r-- 1 root root****0 2007-10-24 13:04 ls
am2:/usr/lib64/jvm #

it's gone, great > continue

Note: there should have been a "update-alternatives rpm" installed @ the initial install, but. check for it.
Now let's use update-alternatives & do:

#cd /
#update-alternatives --auto java

Log out & log in
you should have your Java apps working.

If not check the linkage once again

im@am2:~>**which java
/usr/bin/java

im@am2:~> ls -l /usr/bin/java

im@am2:~> ls -l /etc/alternatives/java

And the return should be (in my case):

jim@am2:~> ls -l /etc/alternatives/java
lrwxrwxrwx 1 root root 40 2007-10-24 13:50 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.6.0.u3-sun/bin/java

Which is what I wanted. Your's may be different depending on the Java version you have in in /usr/lib64/jvm.

Note1: For the x86 users, use /lib vice /lib64 if you have the same problem.

Note2: This doesn't take very long; it's the learning curve that takes a while.

Have fun...Worked for me...

Hey thanks, Snakedriver.

I've been mucking around with my Java for almost 2 hours now, I'll have to try this out a little later--I'm a little burnt out right now.

A big Thanks for this...
Very clear step by step to correct this problem..
I take for granted that you have the 64bits version though

Java now works again in Konqueror, but not in Firefox. I removed other versions to get this:

wrath@aramis:~> ls -l /usr/lib/jvm
total 8
drwxr-xr-x 3 root root 4096 2007-10-25 00:13 java-1.5.0-sun-1.5.0_update13
drwxr-xr-x 3 root root 4096 2007-10-22 10:00 java-1.6.0.u3-sun-1.6.0.u3
lrwxrwxrwx 1 root root** 21 2007-10-24 23:02 jre -> /etc/alternatives/jre
lrwxrwxrwx 1 root root** 27 2007-10-24 23:45 jre-1.5.0 -> /etc/alternatives/jre_1.5.0
lrwxrwxrwx 1 root root** 33 2007-10-25 00:13 jre-1.5.0-sun -> java-1.5.0-sun-1.5.0_update13/jre
lrwxrwxrwx 1 root root** 30 2007-10-24 23:26 jre-1.6.0.u3 -> /etc/alternatives/jre_1.6.0.u3
lrwxrwxrwx 1 root root** 30 2007-10-25 00:15 jre-1.6.0.u3-sun -> java-1.6.0.u3-sun-1.6.0.u3/jre
lrwxrwxrwx 1 root root** 25 2007-10-24 23:10 jre-sun -> /etc/alternatives/jre_sun

What am I missing in terms of the plug-in for Java?

Edit; After doing some digging around online I found this bug.

I take for granted that you have the 64bits version though
[/b]

Yes I do.

"Edit; After doing some digging around online I found this bug."
Wish I would have looked there 1st; would have eased the learning curve. Thanks for the link. Looks like it still needs work.

"What am I missing in terms of the plug-in for Java?"
See comment #36 in the link you posted; it's a different path:

"l /etc/alternatives/java /etc/alternatives/javaplugin <----------

lrwxrwxrwx 1 root root 38 17 ott 19:11 /etc/alternatives/java ->
/usr/lib/jvm/jre-1.6.0.u1-sun/bin/java
lrwxrwxrwx 1 root root 80 17 ott 19:13 /etc/alternatives/javaplugin ->
/usr/lib/jvm/java-1.6.0.u1-sun-1.6.0.u1/jre/plugin/i386/ns7/libjavaplugin_oji.so"

Her'e the way mine looks:

jim@am2:~> l /etc/alternatives/java /etc/alternatives/javaplugin
lrwxrwxrwx 1 root root 40 2007-10-24 13:50 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.6.0.u3-sun/bin/java*
lrwxrwxrwx 1 root root 80 2007-10-25 19:06 /etc/alternatives/javaplugin -> /usr/lib/jvm/java-1.6.0.u3-sun-1.6.0.u3/jre/plugin/i386/ns7/libjavaplugin_oji.so*
jim@am2:~>

I recommend tracking that link for a while...

And here's what Guru says to do: http://dev-loki.blogspot.com/2007/10/upgra...n-opensuse.html

"To quickly fix them, just copy/paste the following snippet as in a shell as root:"

for f in /etc/alternatives/j*; do
**ff=$(readlink "$f")
**case "$ff" in
*****/jvm*|*/share/man/*) update-alternatives --auto "${f##*/}";;
*****) echo "(skipping $f)";;
**esac
done

Cool! Thanks Snakedriver. I'm sure this will help a lot of people once they figure out they have a problem with their Java.

Java now works again in Konqueror, but not in Firefox.
[/b]

Mine isn't working either. And I have updated & ran:

/usr/sbin/update-alternatives --auto javaplugin

I think my sym-links are OK.
I need to recheck the one in Firefox plugins...

There is a series of bug reports working...

Best help I have found is @ http://marc.info/?l=opensuse&w=2&r...ox+java&q=b
specifically http://marc.info/?l=opensuse&m=119318580012825&w=2 which shows a link to /blackdown/JDK-1.4.2/amd64/03
"I got it at
ftp://mirrors.ibiblio.org/pub/mirrors/bla...-1.4.2/amd64/03
nspluginwrapper does not work with the java plugin. Remember, you will
need to manually make the symlink from the plugin to
/usr/lib64/browser-plugins.

--
Joe Morris"

That link is busy at the moment as it looks like all Linux distros are broken & trying to get it all at once.

This will be fixed; hang on...
Got to run; back in the PM.

found it @ ftp://ftp.gwdg.de/pub/languages/java/linu...1.4.2/amd64/03/

But looking at the install instructions:

Java Plug-In install instructions
=================================

Please remove older plug-in versions before installing the 1.4.2-03
plug-in. E.g. remove ~/.netscape/plugins/javaplugin.so and
~/.netscape/java/.
[/b]

And don't forget the sym-link: " Note: It has to be a symbolic link, copying libjavaplugin_oji.so will NOT work."

I'm gonna wait for a fix for a while...

nspluginwrapper does not work with the java plugin. Remember, you will
need to manually make the symlink from the plugin to
/usr/lib64/browser-plugins.
[/b]

That info was a *HUGE* help for me, Snakedriver, since I have a 32 bit system, I don't need the nspluginwrapper. As soon as I uninstalled it, Java worked perfectly in Firefox again. That's a pisser for everyone in 64-bit land, though.

I should note, however, that this was after I manually fixed the sym links as per your instructions.