TNS-12560: TNS:protocol adapter error 小记

虚拟机环境:

OS:RedHat 5.6

DB:Oracle 10g 10.2.0.1

在虚拟机里装好Oracle 10g之后，客户端无法连接，提示“TNS-12560: TNS:protocol adapter error”

tnsping不通，显示如下:

C:\>tnsping ts

TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 13-DEC-

011 13:08:05

Copyright (c) 1997, 2005, Oracle. All rights reserved.

Used parameter files:

C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS =(PROTOCOL = TCP)

HOST = oratest)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = ts.oracle.com)))

TNS-12560: TNS:protocol adapter error

在虚拟机本地认证是通过的:



查看了listener.ora和tnsnames.ora都没问题。最后把RedHat的1521端口打开，客户端就可以连通了。

打开1521端口如下:











可以tnsping通了

C:>tnsping ts

TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 13-DEC-

011 13:09:59

Copyright (c) 1997, 2005, Oracle. All rights reserved.

Used parameter files:

C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS =(PROTOCOL = TCP)

HOST = oratest)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = ts.oracle.com)))

OK (40 msec)