Using ORADIM to Create Instance on Oracle - Windows Platform

Oradim is an Oracle utility that creates a Service to a database. 
If a database is created upon install, or if you use Database Assistant to create a db, it will automatically use this utility to create a service to the db upon creation of the db. If you double click on the Services icon in Control Panel, you will see all the services that are available to the machine. If a machine has a db running on it, you will see a service by the name of OracleService(SID) with a manual or automatic startup type. If the startup is set to automatic, the db will shutdown/startup whenever the machine is restarted, else you will have to shutdown/startup manually. 


So you have to use oradim only when you create a database without using the Database Configuration Assistant. You have to use Oradim to create services if you created the database manually. 


Example of Oradim to create a service for an 9i database:
Create an instance by specifying the following options:
(type at command prompt) --->

 ORADIM -NEW -SID sid | -SRVC srvc | -ASMSID sid | -ASMSRVC srvc [-SYSPWD pass]
 [-STARTMODE auto|manual] [-SRVCSTART system|demand] [-PFILE file | -SPFILE]
 [-SHUTMODE normal|immediate|abort] [-TIMEOUT secs] [-RUNAS osusr/ospass]



Eg:

C:\oracle\bin\oradim –new –sid MYSID –intpwd <pwd> –maxusers 20 startmode auto –pfile initMYSID.ora