To use SVN Access Manager you need at least:

• a working subversion installation
• a MySQL Database, version 5 or higher, a PostgreSQL 8 or higher database or an Oracle 10g or higher database
• an Apache web server, version 2.0 or higher with DAV, mod_authz and SVN support
• PHP version 5.4 or higher with working oci8 support if using Oracle database
• PHP 7 was tested without issues

If you need support installing and configuring Oracle oci8 driver for PHP, please refer to the PHP documentation.