SID and instance_name
is the
instance name
db_name is the name of the database
to find out the two concepts, databases and instances
Examples: Examples are a set of processes and memory structures of the database starts initializing
the database: it refers to a database file in the user store some physical data such as data files, control files, etc.
How to view SID the Oracle
: PS -ef | grep PMON process can be seen from the name can also be held by sqlplus / as sysdba show parameter instance_name
How to view db_name
the SELECT * from v $ instance;
select * from v$database;
