Below is the list of OBIEE components (programs) and services responsible to run them. Below article is based on Windsow environment.

1) Oracle Business Intelligence Server (Oracle BI Server)
2) Oracle Business Intelligence Presentation Services (Oracle BI Presentation Server)
3) Oracle Business Intelligence Javahost (Oracle BI Java Host)
4) Oracle Business Intelligence Scheduler (Oracle BI Scheduler)
5) Oracle Business Intelligence Cluster Controller ( Oracle BI Cluster Controller)

If you followed the default installation then first 3 services will have start up type as Automatic and 4th and 5th will have start up type as Manual.

Please note that in Oder to enable Scheduler and Cluster Controller additional configuration is required. That will be discussed in separate post.

Below Screen print shows those services.

OBIEE ServicesOBIEE Services

If changes have been made to Oracle BI serve’s configurations, repository files, Web Catalog for Answers , other configurations etc then above services needs restart.

Please not that order in which services are being restarted is very important. And it is as below.

1) Oracle Business Intelligence Server (Oracle BI Server)
2) Oracle Business Intelligence Presentation Services (Oracle BI Presentation Server)
3) Oracle Business Intelligence Javahost (Oracle BI Java Host)
4) Oracle Business Intelligence Scheduler (Oracle BI Scheduler)
5) Oracle Business Intelligence Cluster Controller ( Oracle BI Cluster Controller)

Important this is not all services needs restart each time you make any of the changes describe. It mainly depends on the changes or rather type of change you are making.