| 1  | Click Start > Administrative Tools > Computer Management. | 
| 2  | In the Computer Management window, open System Tools, select Local Users and Groups, and select Users.  | 
| 4  | 
| 6  | Click OK again. | 
On Windows, the SID and Oracle Home can be determined from the Registry.
| 1  | Start the Registry Editor on the Oracle Database Server. | 
| a  | 
| b  | 
| 3  | Open the folder entitled “KEY_<Oracle_Home>” that represents the target installation of Oracle to list the registry items in the frame on the right. | 
| 4  | In the Name column, locate the following items, and make note of the associated entry in the Data column: | 
On Linux and UNIX, you can use the “oratab” file to identify the SID and Oracle Home.
| 1  | Open the “oratab” file by issuing the following command in a terminal window: | 
| 2  | In the “oratab” file, note the application information. | 
| • | “PROD” is the ORACLE_SID | 
| • | “/u03/app/oracle/product/10.2.0/db_1” is the ORACLE_HOME |