plsql登录出错

[jinghan_ying]

plsql登录oracle时有ora-12514错误，在网上查找后，
我添加了 (SID_DESC = (GLOBAL_DBNAME = ORACLE)
(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
(SID_NAME = ORACLE) )
然后，再次登录时登录不同的用户竟然报不同的错误，如下：
1、用scott登录报ora-01034 和ora- 27101
2、用我自己注册的用户名登录时仍然报ora-12514错误
怎么回事啊，无从下手了，新望好心人帮助解决，急着用。
附录：
# listener.ora Network Configuration File: E:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =

(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ORCL)
(ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
(SID_NAME = ORCL)
)
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = genuine.microsoft.com)(PORT = 1521))
)
)

# tnsnames.ora Network Configuration File: E:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

SHOP =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = genuine.microsoft.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = Shop)
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = genuine.microsoft.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)

[美到心痛]

scott连接报错,说明你的数据库没有启动,或者是你连错实例了. 你输入set SID_NAME=orcl 再连接试试

[ghx287524027]

从网上查了一下，请参考以下解决方法： http://www.cnblogs.com/chuyuhuashi/archive/2012/08/05/2623834.html 今天启动服务也没有异常，可是使用 PL/SQL Developer 登录 Oracle 的时候发现报异常： ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist 出现ora-12514错误是因为监听listener出了问题，需要检查listener.ora文件，请参考以下讲解： http://blog.sina.com.cn/s/blog_5ffd70480100dm8b.html http://blog.sina.com.cn/s/blog_53be6b460100l3ao.html