sir i change host name with ip address in user computer
i got server ip address by oracle command
select SYS_CONTEXT('USERENV', 'IP_ADDRESS', 15) ipaddr from dual;
result
127.0.0.1

i change this ip address with host

orcl =
(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521)))
(CONNECT_DATA = (SERVICE_NAME = pdborcl) ))

PDBORCL =
(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA = (SERVER = DEDICATED)
(SERVICE_NAME = pdborcl) ) )

Rep60_MFAMDA-PC,Rep60_MFAMDA-PC.world=(ADDRESS=(PROTOCOL=tcp)(HOST=MFAMDA-PC)(PORT=1949))

then error change
now user computer give me error ora-12224 tns no listener
ora-12224 tns no listener
sir see new error

in server both 12c and form 6i run fine
but problme in user computer
when i run compiled form in user computer that give me error
ora-12224 tns no listener
regard

select utl_inaddr.get_host_address from dual;

select host_name from v$instance;

select utl_inaddr.get_host_name from dual;

select SYS_CONTEXT('USERENV', 'SERVER_HOST') host from dual;