Use which user to create the Oracle tables?

http://publib.boulder.ibm.com/infocenter/clmhelp/v3r0/topic/com.ibm.jazz.install.doc/topics/t_s_server_installation_setup_oracle.html

In the above link on preparing Oracle for RTC 3, it says run the repotools as the DB users. How? Does it mean I have to create these DB users as users in Windows?! Do I have to do this step? the step 6 says: "The following steps, including modifying the teamserver.properties file can automatically be done by following the steps in Running the setup wizard. "

After the database is created, you must run a repository tools command to create database tables.
As a user that is created for Jazz Team Server and specified in the <JazzInstallDir>/server/conf/jts/teamserver.properties file, go to <JazzInstallDir>/server and run repotools-jts -createTables -clean.

As a user that is created for Change and Configuration Management and specified in the <JazzInstallDir>/server/conf/ccm/teamserver.properties file, go to <JazzInstallDir>/server and run repotools-ccm -createTables -clean