Tnsnames Ora file configuration

tnsnames.ora file location ：

$ORACLE_HOME/network/admin/tnsnames.ora

File configuration ：

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.11)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )