A电脑为oracle服务端，B电脑为oracle客户端。
配置步骤：
首先AB在同一局域网；
服务端：
①修改ORACLE_HOME\NETWORK\ADMIN\listener.ora，把HOST改为本机IP(HOST = 172.20.10.3)：
# listener.ora Network Configuration File: D:\app\ty\product\12.1.0\dbhome_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = D:\app\ty\product\12.1.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:D:\app\ty\product\12.1.0\dbhome_1\bin\oraclr12.dll")
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.20.10.3)(PORT = 1521))
)
)
ADR_BASE_LISTENER = D:\app\ty\product\12.1.0\dbhome_1\log
②修改ORACLE_HOME\NETWORK\ADMIN\tnsnames.ora，把HOST改为本机IP(HOST = 172.20.10.3)：
# tnsnames.ora Network Configuration File: D:\app\ty\product\12.1.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.20.10.3)(PORT = 1521))
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.20.10.3)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
客户端：
上面2个文件的HOST和服务端一致（有时候也不用配）；
连接：服务端IP:1521/实例名。