Opal HowTo Install

Tags: HowTo Opal

See: ​http://wiki.obiba.org/display/OPALDOC/Opal+Installation+Guide

Process

We followed the Installation of Opal Zip distribution instructions that installed Opal from a zip file.

1. Download Opal distribution into the /local/ directory
2. Unzip the Opal distribution. Note that the zip file contains a root directory named opal-server-{version}.
3. Create an Opal home directory (to facilitate subsequent upgrades) using the command mkdir opal-home.
4. Create a symbolic link to the Opal server directory, using the command ln -s opal-server-{version} opal_server
5. Copy the conf directory from the server directory into the home directory, using the command cp -r opal-server/conf opal-home.
6. Create a script called start_opal.sh in the /local/ directory containing the following:

#!/usr/bin/env bash

echo "Starting Opal"

export JAVA_OPTS="-Xmx2G -XX:-UseCompressedClassPointers"
export OPAL_HOME="/local/opal-home"

/local/opal-server/bin/opal

echo "Ended"

The java options are:

-Xmx2G

increase the memory allocated to Java to 2GB

-XX:-UseCompressedClassPointers

Do not compress class pointers (because Opal creates too many classes?)

Error: Macro BackLinks(None) failed

'Environment' object has no attribute 'get_db_cnx'