A UNIX user executing the installation and later on running the 
instance, must be created, preferably mzadmin, which is referenced for this user throughout this document.
Note!
The mzadmin user must have read/write permissions for all the directories stated in the Environment Variables.
It is not recommended to use root as mzadmin, since this will make troubleshooting difficult.
During the installation procedure, the default application user, mzadmin, is automatically created - note that this is not related to the OS user or the DB user. You cannot create or use other application users than this default user until after the installation is complete.
should always be administrated by users belonging to the access groups created in . See Access Controller for more information on how to create users and access groups.
The final part of the general preparations is to ensure that the necessary third party products are installed, which are the required Java version, the platform database to be used (Oracle, PostgreSQL, SAP HANA or Derby) and any additional software required by various parts of the system. See System Requirements for more information.
This section includes the following subsections: