Pokud chcete připojit Oracle® ke dvěma zdrojům dat ODBC, musíte vytvořit dva posluchače Oracle® a dvě databázová propojení, jedno pro každý zdroj dat. Například:
$ more /etc/odbc.ini [DSN1] Driver = SYBASE ... [DSN2] Driver = SYBASE ... $ more $ORACLE_HOME/network/admin/listener.ora listener = (description_list = (description = (address_list = (address = (protocol = tcp)(host = unixhost)(port = 1521)) ) ) sid_list_listener= (sid_list= (sid_desc= (sid_name=DSN1) (oracle_home=...) (program=...) ) (sid_desc= (sid_name=DSN2) (oracle_home=...) (program=...) ) ) $ more $ORACLE_HOME/hs/admin/initDSN1.ora ... HS_FDS_CONNECT_INFO=DSN1 HS_FDS_SHAREABLE_NAME=... ... $ more $ORACLE_HOME/hs/admin/initDSN2.ora ... HS_FDS_CONNECT_INFO=DSN2 HS_FDS_SHAREABLE_NAME=... ... $ more $ORACLE_HOME/network/admin/tnsnames.ora DG4ODBC1= (description= (address=(protocol=tcp)(host=...)(port=1521)) (connect_data=(sid=DSN1)) (hs=ok) ) DG4ODBC2= (description= (address=(protocol=tcp)(host=...)(port=1521)) (connect_data=(sid=DSN2)) (hs=ok) ) $ sqlplus / as sysdba SQL> create database link mylink1 connect to "user" identified by "password" using 'DG4ODBC1'; create database link mylink2 connect to "user" identified by "password" using 'DG4ODBC2'; SQL> select * from "MYTABLE1"@mylink1; SQL> select * from "MYTABLE2"@mylink2;