1. Tux2 Database The Architecture of Our System © Juhani Välimäki 2005

2. Database instances tux2 tux1 WWW and Database server info9.helia.amk Port listener: 1526 SQL Plus application JDBC driver Oracle driver tcp/ip, ODBC? tcp/ip, xDBC iSQL Web-client WWW server (e.g. Apache Tomcat) tcp/ip, http SQL Plus Windows application © Juhani Välimäki 2005 HTML browser HTML page Port listener: 7780 The Database System Helia Server Farm xDBC driver Home iSQL Web-client HTML browser HTML page tcp/ip, http via kuha.helia.fi Java Servlet? SQL Plus driver SQL Plus Windows application server Port : 1599 Data- base Helia Intranet protected by the Firewall tux2tux3

3. In a file called TNSNAMES.ORA: TUX2.HELIA.AMK = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = info9.helia.amk) (PORT = 1526) ) (CONNECT_DATA = (SERVICE_NAME = TUX2.HELIA.AMK) ) © Juhani Välimäki 2005 Settings needed by Client Computers (if not using just the Web-client)

4. Oracle 9.2 Database instance tux2.helia.amk WWW and Database server info9.helia.amk Port listener: 1526 © Juhani Välimäki 2005 The Database dbp12 dbp11 dbp01 System tables

5. These scripts in CREATE_USERS_ORACLE.SQL file where executed in the TUX2 Database by a user with the administrator privileges. DROP USER dbp01 CASCADE; CREATE USER dbp01 IDENTIFIED BY dbp01; ALTER USER dbp01 DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp; ALTER USER dbp01 QUOTA UNLIMITED ON users; GRANT CONNECT TO dbp01; GRANT RESOURCE TO dbp01; DROP USER dbp02 CASCADE; CREATE USER dbp02 IDENTIFIED BY dbp02; ALTER USER dbp02 DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp; ALTER USER dbp02 QUOTA UNLIMITED ON users; GRANT CONNECT TO dbp02; GRANT RESOURCE TO dbp02; … and so on … © Juhani Välimäki 2005 SQL Scripts used to create the users.