ORA_12154 TNS

 Hi,

    The tnsnames.ora file looks ok. Tried defining TNS_ADMIN. But the following defination in tnsnames.ora file generates the error: ORA_12154 TNS  

SHATEST.WORLD =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = xxx.xx.x.yy)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = SHATEST)
    )
  )

Thanks a lot,

Arun