This is a log of my install of Sun's J2EE SDK under Linux RH6.2 on 600MHz
Pentium III with 256MB of RAM.
My RH6.2 PC has all the updates until end of February 2001. It also had
updated kernel, and Oracle 8.1.7.0.1 installed. For details look at
http://www.ccl.net/cca/software/UNIX/oracle/RH6.2/, my Oracle install notes.

Installing the Standard Edition of Java 2 1.3
Before you can run J2EE, you need to install J2SE. I logged in as root.
JDK1.3. It is available from http://java.sun.com/j2se/1.3/.
I took the Linux x86 distribution j2sdk-1_3_0_02-linux.bin 27,092,454 bytes.
I also downloaded the Documentation bundle for J2SDK:
j2sdk-1_3_0-update1-doc.tar.gz = 13,186,129 bytes. 
I retrieved the j2sdk-1_3_0_02-linux.bin and j2sdk-1_3_0-update1-doc.tar.gz
from Sun and saved them in /tmp/jdk on my Linux PC. I unpacked them first
in /tmp/jdk to make sure what are the top directories they create.
Then I did a real install as:

   cd /tmp/jdk
   mv j2sdk-1_3_0_02-linux.bin /usr/local
   cd /usr/local
   sh j2sdk-1_3_0_02-linux.bin

I said Yes, and it unpacked creating the directory: /usr/local/jdk1.3.0_02
I removed my previous link to jdk1.3 (I had previous version installed before).
and temporarily moved /usr/local/jdk1.3.0_02 to /usr/local/jdk1.3

   cd /usr/local
   rm jdk1.3
   mv jdk1.3.0_02 jdk1.3


Now, I installed documentation bundle and moved jdk1.3 back to what it was
and make a link, and then updated my environment.

   cd /tmp/jdk
   mv j2sdk-1_3_0-update1-doc.tar.gz /usr/local
   cd /usr/local
   tar zxvf j2sdk-1_3_0-update1-doc.tar.gz
   mv jdk1.3 jdk1.3.0_02 
   ln -s jdk1.3.0_02 jdk1.3
   JAVA_HOME=/usr/local/jdk1.3
   PATH=${PATH}:${JAVA_HOME}/bin
   CLASSPATH=${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
   export JAVA_HOME PATH CLASSPATH


At this point I created in the file /root/j2eeenv.sh where I was
callecting all needed environment variables so I can log out any moment
and then restore the needed environment by sourcing this script:

   . /root/j2eeenv.sh

At this moment, the script was:

   JAVA_HOME=/usr/local/jdk1.3
   PATH=${PATH}:${JAVA_HOME}/bin
   CLASSPATH=${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
   export JAVA_HOME PATH CLASSPATH


Then I deleted the compressed archives from /usr/local and/or the /tmp/jdk
directory (actually, I did not delete them, but saved them in my
upload directory in case I ever need them again).

Installing the secure sockets and crypto stuff.
Installed JCE 1.2.1 Java Cryptography Extension 1.2.1 
    Go to: http://www.javasoft.com/products/jce/
Click on: Download JCE 1.2.1 Software, policy files, and docs  
This will get you: jce-1_2_1.zip. I assume that you saved it in /tmp

   mkdir /usr/local/JCE
   cd /usr/local/JCE
   cp /tmp/jce-1_2_1.zip .
   unzip jce-1_2_1.zip

Then added the security provider to Java:
      a) copied JCE jars to lib/ext

         cp -p /usr/local/JCE/jce1.2.1/lib/*.jar /usr/local/jdk1.3/jre/lib/ext
         CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jce1_2_1.jar
         export CLASSPATH

      b) edited /usr/local/jdk1.3/jre/lib/security/java.security and added
         line: 
          security.provider.3=com.sun.crypto.provider.SunJCE

Installed JSSE (JavaTM Secure Socket Extension (JSSE) 1.0.2)
  available from http://java.sun.com/products/jsse/

   mkdir /usr/local/jsse

   with a browser go to: http://java.sun.com/products/jsse/
    Click on domestic distribution
    Logged in, accepted, continue, answered Yes, Continue, 
    downloaded jsse-1_0_2-do.zip (to /tmp for example

   cd /usr/local/jsse
   cp /tmp/jsse-1_0_2-do.zip .
   unzip jsse-1_0_2-do.zip

I installed the JSSE as "installed extension" for jdk1.3 and
  copied them to /usr/local/jdk1.3/jre/lib/ext directory
  ($JAVA_HOME/jre/lib/ext):

       cp -p /usr/local/jsse/jsse1.0.2/lib/*jar ${JAVA_HOME}/jre/lib/ext
       CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jcert.jar
       CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jnet.jar
       CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jsse.jar
       export CLASSPATH


Then, I registered the provider in $JAVA_HOME/jre/lib/security/java.security
by adding a line:
       security.provider.4=com.sun.net.ssl.internal.ssl.Provider   

Installing the J2EE
Went to the site: http://java.sun.com/j2ee/j2sdkee/
and downloaded the Java 2 SDK Enterprise Edition v1.2.1 for Linux as one file.
I downloaded them to /tmp (but in fact, I have some special directory where
I keep my downloads). The file was: j2sdkee-1_2_1-linux.tar.gz =10,079,329 
I also downloaded the documentation bundle. The file was:
j2sdkee-1_2_1-doc-linux.tar.gz = 4,466,923 bytes. I used tar ztvf file
to check what is the top directory of the distribution. They both have
j2sdkee1.2.1 as top. I assume that you do not have the 
/usr/local/j2ee directory yet. If you have, move it to j2ee-old or
something. So what I did is:

   cd /usr/local
   tar zxvf /tmp/j2sdkee-1_2_1-linux.tar.gz
   tar zxvf /tmp/j2sdkee-1_2_1-doc-linux.tar.gz
   ln -s j2sdkee1.2.1 j2ee


I coied the file /usr/local/j2ee/bin/userconfig.sh to userconfig.sh-orig

  cd /usr/local/j2ee/bin
  cp -p /userconfig.sh  userconfig.sh-orig

and edited userconfig.sh to be:

---------------- cut --------------------------
# J2EE_CLASSPATH is appended to the classpath referenced by the EJB server.
# J2EE_CLASSPATH must include the location of the JDBC driver classes
# (except for the Cloudscape driver shipped with this release).
# Each directory is delimited by a colon.

ORACLE_HOME=/u01/app/oracle/product/8.1.7.0.1
export ORACLE_HOME

# classes111_g.zip is the JDBC driver with debug info
J2EE_CLASSPATH=${ORACLE_HOME}/jdbc/lib/classes111_g.zip
J2EE_CLASSPATH=${J2EE_CLASSPATH}:${ORACLE_HOME}/jdbc/lib/nls_charset11.zip
export J2EE_CLASSPATH

if [ "xXx$LD_LIBRARY_PATH" != "xXx" ]; then
   LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${ORACLE_HOME}/jdbc/lib
else
   LD_LIBRARY_PATH=${ORACLE_HOME}/jdbc/lib
fi

export  LD_LIBRARY_PATH

# JAVA_HOME refers to the directory where the Java(tm) 2 SDK
# Standard Edition software is installed.

JAVA_HOME=/usr/local/jdk1.3
export JAVA_HOME

# No JIT compiler by default
JAVA_COMPILER=NONE
export JAVA_COMPILER
---------------- cut --------------------------

I created a user and group j2eeinst and j2eerun as:

   groupadd j2eeinst
   useradd j2eeinst -g j2eeinst
   passwd j2eeinst

   groupadd j2eerun
   useradd j2eerun -g j2eerun
   passwd j2eerun

The j2eeinst user (the installer) will  own the files, while
the j2eerun will be the user id which which the J2EE components will be
running.

I then changed the ownership of files under /usr/local/j2ee to j2eeinst

   cd /usr/local/j2ee
   chown -R j2eeinst.j2eeinst .

I then loggout as root, and logged in as j2eeinst.
I edited the .bash_profile file in my /home/j2eeinst to be:
----------- cut ----------------
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin
BASH_ENV=$HOME/.bashrc
USERNAME="j2eeinst"

export USERNAME BASH_ENV PATH

alias emacs='emacs -nw'

JAVA_HOME=/usr/local/jdk1.3
export JAVA_HOME

PATH=${PATH}:${JAVA_HOME}/bin
CLASSPATH=${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export JAVA_HOME PATH CLASSPATH

J2EE_HOME=/usr/local/j2ee
export J2EE_HOME

JAVA_HOME=/usr/local/jdk1.3
CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jce1_2_1.jar
export CLASSPATH

CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jcert.jar
CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jnet.jar
CLASSPATH=${CLASSPATH}:${JAVA_HOME}/jre/lib/ext/jsse.jar
export CLASSPATH

ORACLE_HOME=/u01/app/oracle/product/8.1.7.0.1
export ORACLE_HOME

------------- cut ------------
and sourced this file:

. /home/j2eeinst/.bash_profile

I then started to read the docs in my browser:
file:///usr/local/j2ee/doc/release/ConigGuide.html

JDBC Drivers:
Copied the JDBC drivers from Oracle to $J2EE_HOME/lib/system:

   cd $J2EE_HOME/lib/system
   mkdir oracle
   cd oracle 
   cp -p $ORACLE_HOME/jdbc/lib/*  .