How to check the Database and Listener is Running in Oracle

Checking of the started the database and listener.

PROD:e2dsavctigdev01:/u01/app/oracle> ps -ef|grep pmon

  oracle 1462     1   0 03:15:03 ?           0:00 ora_pmon_instancename

  oracle 1499 14219   0 03:16:40 pts/1       0:00 grep pmon

PROD:e2dsavctigdev01:/u01/app/oracle> ps -ef|grep tns

  oracle 1500 1421   0 02:16:43 pts/1       0:00 grep tns

  oracle 1486     1  0 02:15:48 ?           0:00 /u01/app/oracle/product/11.2.0.4/db_1/bin/tnslsnr LISTENER -inherit