As you might know, IBM has decided to shift CentOS to Stream, which means CentOS won’t be a “stable” OS anymore (so it might not be the best choice to use as a dev environment). So, let’s install latest DCTM on Ubuntu Server 20.04 (LTS). In this guide will also be using PostgreSQL 12, instead of 11. Note that this setup is not supported (only Ubuntu 18+PostgreSQL 12 is supported) but we don’t care much 🙂

This is a step-by-step guide to install Documentum 20.4 in an Ubuntu Linux environment with PostgreSQL 12.

Environment

Host:
Windows 10 x64 8GB RAM
VMware Workstation Player 15

Guest:
Ubuntu Server 20.04 LTS x64 25GB HD 4GB RAM 2 cores
PostgreSQL 12
Documentum 20.4

VM Creation

Mount the Ubuntu Server DVD image, boot the machine and follow the steps. You can choose to let EasyInstall do the work for you. I used minimal package install to save resources, named the machine dctm204ubuntu, configured the network and created a dmadmin user. You can use the installer to install docker and/or PostgreSQL too.

OS Configuration

• Install required packages:

dmadmin@dctm204ubuntu:/opt/documentum/sw$ sudo apt install net-tools tcl rng-tools expect xterm

PostgreSQL Configuration

• Install required packages:

dmadmin@dctm204ubuntu:~$ sudo apt -y install postgresql postgresql-contrib

• Enable and start the PostgreSQL service:

dmadmin@dctm204ubuntu:~$ systemctl start postgresql
dmadmin@dctm204ubuntu:~$ sudo systemctl enable postgresql

• Configure the postgres user:

dmadmin@dctm204ubuntu:~$ sudo passwd postgres
New password:
Retype new password:
passwd: password updated successfully

dmadmin@dctm204ubuntu:~$ sudo -u postgres psql postgres
psql (12.5 (Ubuntu 12.5-0ubuntu0.20.04.1))
Type “help” for help.

postgres=# \password postgres
Enter new password:
Enter it again:
postgres=# exit

• Configure PostgreSQL:

dmadmin@dctm204ubuntu:~$ sudo vi /etc/postgresql/12/main/postgresql.conf
listen_addresses = ‘*’
port = 5432

dmadmin@dctm204ubuntu:~$ sudo vi /etc/postgresql/12/main/pg_hba.conf
host all all 127.0.0.1/32 md5
host all all ::/128 md5
host all all dctm204ubuntu md5

• Restart PostgreSQL service to apply the changes:

dmadmin@dctm204ubuntu:~$ sudo systemctl restart postgresql

phpPgAdmin Configuration

• Install required packages:

dmadmin@dctm204ubuntu:~$ sudo apt install -y phppgadmin

• Configure phpPgAdmin:

dmadmin@dctm204ubuntu:~$ sudo vi /etc/apache2/conf-available/phppgadmin.conf
#Require local

dmadmin@dctm204ubuntu:~$ sudo vi /etc/phppgadmin/config.inc.php
$conf[‘extra_login_security’] = false;

• Restart httpd service to apply the changes:

dmadmin@dctm204ubuntu:~$ sudo /etc/init.d/apache2 restart

Now you should be able to login to the console from http://dctm204/phppgadmin/.

ODBC Configuration

• Install required packages:

dmadmin@dctm204ubuntu:~$ sudo apt install unixodbc unixodbc-dev odbc-postgresql

• Configure .ini files:

dmadmin@dctm204ubuntu:~$ sudo vi /etc/odbc.ini
[MyPostgres]
Description=PostgreSQL
Driver=PostgreSQL
Database=postgres
Servername=dctm204ubuntu
UserName=postgres
Password=dmadmin
Port=5432
Protocol=12
ReadOnly=No
RowVersioning=No
ShowSystemTables=No
ShowOidColumn=No
FakeOidIndex=No
UpdateableCursors=Yes
DEBUG=Yes

dmadmin@dctm204ubuntu:~$ sudo vi /etc/odbcinst.ini
[PostgreSQL]
Driver = /usr/lib/x86_64-linux-gnu/odbc/psqlodbcw.so
Driver64 = /usr/lib/x86_64-linux-gnu/odbc/psqlodbcw.so
Setup64 = /usr/lib/x86_64-linux-gnu/odbc/libodbcpsqlS.so
FileUsage = 1

• Test the connection:

dmadmin@dctm204ubuntu:~$ isql -v MyPostgres
+—————————————+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+—————————————+
SQL>

Documentum server

• Create folders:

dmadmin@dctm204ubuntu:~$ sudo mkdir -p /opt/documentum/sw && mkdir -p /opt/documentum/product/20.4
dmadmin@dctm204ubuntu:~$ sudo chown -R dmadmin.dmadmin /opt/documentum

• Install openJDK 11.0.7 (remember to remove “anon” from the list of disabled algorithms or the installer will fail to connect to the repository)

[dmadmin@dctm204 cs]$ wget https://github.com/AdoptOpenJDK/openjdk11-upstream-binaries/releases/download/jdk-11.0.7%2B10/OpenJDK11U-jdk_x64_linux_11.0.7_10.tar.gz
[dmadmin@dctm204 cs]$ tar xvf OpenJDK11U-jdk_x64_linux_11.0.7_10.tar.gz && mv openjdk-11.0.7+10/ /opt/documentum/

• Set up environment variables:

dmadmin@dctm204ubuntu:/opt/documentum$ vi ~/.bash_profile
DOCUMENTUM=/opt/documentum
export DOCUMENTUM

DM_HOME=$DOCUMENTUM/product/20.4
export DM_HOME

POSTGRESQL_HOME=/usr/lib/postgresql/12
export POSTGRESQL_HOME

JAVA_HOME=/opt/documentum/openjdk-11.0.7+10
export JAVA_HOME

JAVA_TOOL_OPTIONS=”-Djava.locale.providers=COMPAT,SPI”
export JAVA_TOOL_OPTIONS

PATH=$PATH:$DM_HOME/bin:$POSTGRESQL_HOME/bin:$HOME/.local/bin:$HOME/bin:$JAVA_HOME/bin
export PATH

LC_ALL=C
export LC_ALL

LD_LIBRARY_PATH=$POSTGRESQL_HOME/lib:$DM_HOME/bin:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH

• Reserve ports for services:

dmadmin@dctm204ubuntu:~$ sudo vi /etc/services
dctm204 50000/tcp # dctm 20.4 repo
dctm204_s 50001/tcp # dctm 20.4 repo

• Configure limits.conf:

dmadmin@dctm204ubuntu:~$ sudo vi /etc/security/limits.conf
dmadmin – core -1

• Run the installer:

dmadmin@dctm204ubuntu:/opt/documentum/sw$ chmod 777 serverSetup.bin
dmadmin@dctm204ubuntu:/opt/documentum/sw$ ./serverSetup.bin

Docbroker and repository

• Create the tablespace file for the repository (dctm204):

dmadmin@dctm204ubuntu:/opt/documentum/sw$ su –
root@dctm204ubuntu:~# su – postgres
-bash-4.2$ mkdir /var/lib/postgresql/12/main/db_dctm204_dat.dat
-bash-4.2$ exit
root@dctm204ubuntu:~# exit

• Run the configurator:

dmadmin@dctm204ubuntu:/opt/documentum/product/20.4/install$ ./dm_launch_server_config_program.sh

And you should know the rest 🙂