500 Internal Server Error

A)Check the Database is up or not from the console.

1. Open the console.
2. In the Domain Structure tree, expand Services, then select Data Sources.
3. Click the data source name.
4. Select the Monitoring: Testing tab.
5. On the Testing page, select the instance of the data source that you want to test.
   Date source instances are listed by the server on which they are deployed.
6. Click the Test Table Name button. Test results are displayed at the top of the page.

B) Check the telnet command from the unix box.

1. Login to the unix machine.
2. Use telnet <DBhost_Name> <Port_Num>