How many instance are running ?

Dear Friends ,
how do i figure out how many instance are running on database? OR , How many database are running in a server ? Is it possible to find out from 'os' or 'database' level ?
Waiting for ur kind reply ... ...
Edited by: shipon_97 on Sep 4, 2008 10:38 AM

Hi,
On unix/linux use: ps -fea|grep pmon
This will show all pmon process running (Each one is an Instance and you will see the name of the Instance here too), you can also check on /etc/oratab all the oracle databases in the server.
On Windows go to Control Panel, Administration, Services and take a look on the Oracle services.
Cheers,
Francisco Munoz Alvarez
www.oraclenz.com

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at the start of line 14, the previous callers thread is dead & now a new thread is created that belongs to the caller on line 14... etc.

well, i realize at the end there would be 4 threads but im trying to get my head around this explanation in the book:
"A program launches a threads executioin by calling the threads start method, which in turn call the run method. After start launches the thread, start returns to tis caller immediately. The caller then executes concurrently with the lauched thread." there fore if i have 2 concurrent processes, are there 2 threads running????
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