OBIEE 12C behaves different than OBIEE 11g, the start and stop scripts have changed, so

Stopping OBIEE 12c:

Go to the directory: [ORACLE_HOME]/user_projects/domains/bi12/bitools/bin

Unix: ./stop.sh or ./stop.sh -i obis1,obips1

Command Prompt: stop.cmd or stop.cmd {-i <list of instances>} {-r}

Note: If no instances are specified as arguments in the command, 
the administration server, managed server and all system components are shutdown by default.

Starting OBIEE 12c

[ORACLE_HOME]/user_projects/domains/bi12/bitools/bin

./start.sh | start.cmd {-noprompt} {-i <list of instances>} {-r}

For example, ./start.sh -i obis1,obips1
If no instances are specified as arguments in the command,
the administration server, managed server, all system components, and local node manager are started by default.

Status of OBIEE 12c Services (All Weblogic)

./status.sh | status.cmd {-v}

where {-v} is verbose

The command displays component name, type, status, and machine name.

Credits:

http://yyadav05.blogspot.mx/