The ALMA OT is written in Java and can be installed in two different ways, using an installer and with a traditional tarball distribution. We recommend using the former as it's simpler and also gives the user the option to increase the amount of heap space (memory) made available to the OT - this can be very helpful when processing large proposals.
If problems are encountered during installation and/or operation of the OT, users are recommended to examine the Science Portal, especially the OT Troubleshooting and Known Issues pages, for solutions. The Helpdesk2.1 may also contain useful information via its Knowledgebase system. If a solution to a problem cannot be found, a user should then open a Helpdesk ticket.