ADICIONAR O FAILOVER NO TNS_NAMES
FAILO =
(DESCRIPTION =
(CONNECT TIMEOUT = 15)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = DB01DG)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = DB02DG)(PORT = 1521))
)
(CONNECT_DATA =
(SID = CADDB)
)
)