Oracle not starting on EC2

If you can not start your Oracle database on EC2 and get the following errors:

ORA-00119: invalid specification for system parameter LOCAL_LISTENER

ORA-00132: syntax error or unresolved network name 'wcs'

Chances are you created this database on a port  (i.e. port 1522) other than  the default 1521 port. 

You just need to add one entry to the tnsnames.ora file:

wcs = (ADDRESS = (PROTOCOL = TCP) (HOST=10.0.1.185) (PORT = 1522))

(Note: wcs is the DB listener name) 

Then start up your database:

$ SQLPlus /  AS SYSDBA

>startup