I'm almost new to this oracle and linux. I was trying to start my oracle management agent like the following
oracledba@linux:~/oracle/product/10.2.0/db_1/bin> ./emctl start agent
TZ set to US/Mountain
Environment variable ORACLE_SID not defined. Please define it.
How do i set up the environment variable ORACLE_SID?
I need a detailed explanation( cause I'm beginner.....) THANKS A LOT!!