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From David Smith <d...@cornell.edu>
Subject Re: Where is my Tomcat
Date Tue, 25 Jul 2006 17:38:36 GMT


OOzy Pal wrote:

> On 7/25/06, Martin Gainty <mgainty@hotmail.com> wrote:
>
>> All Tomcat installations come with startup.<sh/bat> and 
>> shutdown.<sh/bat> located in $TOMCAT_HOME/bin
>> run the startup.<sh/bat> first in some sort of console (xterm...) and 
>> note the errors
>> e.g. If it cant find $JAVA_HOME it will output debug messages to 
>> screem saying so
>>
>> When and only when your install has been running reliably well for 
>> some time
>> place startup script in init.d
>> M-
>> *********************************************************************
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>>
>>
>> ----- Original Message -----
>> From: "OOzy Pal" <oozypal@gmail.com>
>> To: "Tomcat Users List" <users@tomcat.apache.org>
>> Sent: Tuesday, July 25, 2006 9:58 AM
>> Subject: Re: Where is my Tomcat
>>
>>
>> > On 7/25/06, Martin Millnert <millnert@csbnet.se> wrote:
>> >> On Mon, 2006-07-24 at 23:02 +0200, edward wrote:
>> >> > OOzy Pal wrote:
>> >> >
>> >> > >>
>> >> > >>
>> >> > >
>> >> > > I found the JKD but I am not sure how start tomcat. I am 
>> really stuck.
>> >> > > I am not sure what am I missing? Is there a good tutorial for
>> >> > > installing tomcat?
>> >> > >
>> >> > > Any help is appreciated.
>> >> >
>> >> <snip>
>> >> > Chances are that the Debian tomcat init scripts point to gcj not 
>> to the
>> >> > Sun jdk. It's OK, you can fix that. Try javac -version, it will 
>> tell you
>> >> > about the compiler (which is part of the jdk, not the jre).  
>> Probably
>> >> > you will find that /usr/bin/java and about half a dozen other
>> >> > /usr/bin/javax commands including javac and javah are symlinks 
>> to the
>> >> > gcj versions of java somewhere in /usr/lib. So what you need to 
>> do is to
>> >> > change those symlinks to point to the Sun ones, probably in
>> >> > /usr/share/lib. Some distros have a command which lets you 
>> change the
>> >> > system's version of java (Gentoo does, I'm not sure about Debian)
>> >> > without manually editing all the symlinks.
>> >> >
>> >> <snip>
>> >>
>> >> For reference, on a Ubuntu dapper desktop machine, here's how to 
>> manage
>> >> the symlinks:
>> >> root@desktop1:~# which java
>> >> /usr/bin/java
>> >> root@desktop1:~# ls -al /usr/bin/java*
>> >> lrwxrwxrwx 1 root root 22 2006-02-02 15:29 /usr/bin/java
>> >> -> /etc/alternatives/java
>> >> lrwxrwxrwx 1 root root 23 2006-03-02 14:25 /usr/bin/javac
>> >> -> /etc/alternatives/javac
>> >> lrwxrwxrwx 1 root root 25 2006-03-02 14:25 /usr/bin/javadoc
>> >> -> /etc/alternatives/javadoc
>> >> lrwxrwxrwx 1 root root 23 2006-03-02 14:25 /usr/bin/javah
>> >> -> /etc/alternatives/javah
>> >> lrwxrwxrwx 1 root root 23 2006-03-02 14:25 /usr/bin/javap
>> >> -> /etc/alternatives/javap
>> >> lrwxrwxrwx 1 root root 24 2006-03-02 14:26 /usr/bin/javaws
>> >> -> /etc/alternatives/javaws
>> >>
>> >> These commands does not have to be run as root, Ubuntu favours not 
>> using
>> >> the root account but sudo instead -- which is how OOzy was working.
>> >> The above shows and proves that the Ubuntu-style method is in fact in
>> >> use, and unorthodox methods has not been introduced to the 
>> packages. ;)
>> >> There are clear advantages of managing the JDKs as real packages, and
>> >> there is plenty of reference on this online:
>> >> 
>> http://www.google.se/search?hl=sv&q=the+correct+way+to+install+sun+java
>> >> +jdk+on+ubuntu&btnG=S%C3%B6k&meta=
>> >>
>> >> Ubuntu (as well as Debian) ships with the update-alternatives 
>> program,
>> >> which manages the symlinks and it is necessary to redirect these 
>> if you
>> >> have installed and are planning on using the Sun JDK.
>> >>
>> >> Example:
>> >>
>> >> root@desktop1:~# update-alternatives --config java
>> >>
>> >> There are 5 alternatives which provide `java'.
>> >>
>> >>   Selection    Alternative
>> >> -----------------------------------------------
>> >>       1        /usr/lib/j2sdk1.5-sun/bin/java
>> >> *     2        /usr/lib/j2sdk1.4-sun/bin/java
>> >>       3        /usr/bin/gij-wrapper-4.1
>> >>       4        /usr/bin/gij-wrapper-4.0
>> >>  +    5        /usr/lib/jvm/java-gcj/jre/bin/java
>> >>
>> >> Press enter to keep the default[*], or type selection number:
>> >>
>> >>
>> >> Note that this only configures the `which java`-program. You should
>> >> point all programs to the same version. At the very least make sure
>> >> "java" and "javac" are pointing to the same JDK to avoid confusion.
>> >> To point all programs in a one-liner, you could use:
>> >> root@desktop1:~# cd /usr/bin && for PROGRAM in `ls java*`; do
>> >> update-alternatives --config $PROGRAM ; done
>> >>
>> >> If you're using the sudo administration method, modify the line
>> >> accordingly:
>> >> root@desktop1:~# cd /usr/bin && for PROGRAM in `ls java*`; do sudo
>> >> update-alternatives --config $PROGRAM ; done
>> >>
>> >> This requires you to possibly write in the password as many times as
>> >> there are PROGRAMs, unless your system cache your sudo credentials.
>> >> A more complicated method to achieve the same result is:
>> >> sudo bash -c 'cd /usr/bin && for PROGRAM in `ls java*`; do
>> >> update-alternatives --config $PROGRAM ; done'
>> >>
>> >>
>> >> HTH,
>> >> Regards
>> >> --
>> >> Martin Millnert <millnert@csbnet.se>
>> >>
>> >>
>> >> -----BEGIN PGP SIGNATURE-----
>> >> Version: GnuPG v1.4.3 (GNU/Linux)
>> >>
>> >> iD8DBQBExdyjApq14zkeZkwRAqHaAJ4z9Y9kniiIZdqMtEdZrZP37cFgcQCfactI
>> >> SU3qpmEIh5uxUowdGjbBn/Q=
>> >> =eQ5x
>> >> -----END PGP SIGNATURE-----
>> >>
>> >>
>> >>
>> > I am really lost. How about starting over? I will remove everything
>> > and start from scratch. I just want some good tutorial on how to
>> > install everything again.
>> >
>> > Anyhow is some info of the my current system:
>> >
>> > $java -version
>> > java version "1.4.2"
>> > gij (GNU libgcj) version 4.1.0 (Ubuntu 4.1.0-1ubuntu8)
>> >
>> > Copyright (C) 2006 Free Software Foundation, Inc.
>> > This is free software; see the source for copying conditions.  
>> There is NO
>> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR 
>> PURPOSE.
>> > -------------------------
>> >
>> > $javac -version
>> > Eclipse Java Compiler v_585_R31x, 3.1.2 release, Copyright IBM Corp
>> > 2000, 2006. All rights reserved.
>> >
>> >
>> >
>> > --
>> > OOzy
>> > Kubuntu-Dapper
>> >
>> > ---------------------------------------------------------------------
>> > To start a new topic, e-mail: users@tomcat.apache.org
>> > To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> > For additional commands, e-mail: users-help@tomcat.apache.org
>> >
>> >
>
> Martin,
>
>
> $ echo $JAVA_HOME
> /usr/lib/jvm/java-1.5.0-sun/
>
> $ sudo /usr/share/tomcat5/bin/startup.sh
>
> Using CATALINA_BASE:   /usr/share/tomcat5
> Using CATALINA_HOME:   /usr/share/tomcat5
> Using CATALINA_TMPDIR: /usr/share/tomcat5/temp
> Using JAVA_HOME:       /usr/lib/jvm/java-1.5.0-sun/
>
> $ /etc/init.d/tomcat5 start
> Starting Tomcat 5 servlet engine using Java from /usr/lib/j2se/1.4:
>
> with the following catalina_out log
> The JAVA_HOME environment variable is not defined correctly
> This environment variable is needed to run this program
> NB: JAVA_HOME should point to a JDK not a JRE
>
> I get the above error even though JAVA_HOME points to the JDK but
> tomcat insists on using /usr/lib/j2se/1.4 not
> /usr/lib/jvm/java-1.5.0-sun/
>
> any help Martin?
>

Take a look at the shell script used to start the service 
(/etc/init.d/tomcat5) and see how it determines the JDK.  Is it honoring 
the JAVA_HOME environment variable or digging around on it's own for 
something else?

--David

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