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安装oracle，中间录入密码，用户是：sys，pass: 录入的密码。
连接数据库，建议创建新的用户，最好别直接用sys
安装完毕，则需要配置Net Configration Assistant，才能通过pl/sql连接
确保服务监听服务已经启动
解决方案：
1) 找到监听文件
C:\Oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora
打开：
# listener.ora Network Configuration File: C:\Oracle\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = WIN-L7MD6EPHO8Q.localdomain)(PORT = 1521))
)
)
ADR_BASE_LISTENER = C:\Oracle
修改为：
# listener.ora Network Configuration File: C:\Oracle\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = WIN-L7MD6EPHO8Q.localdomain)(PORT = 1521))
)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = \product\11.2.0\dbhome_1)
(SID_NAME = orcl)
)
)
ADR_BASE_LISTENER = C:\Oracle
ORACLE_HOME： oracle安装目录
GLOBAL_DBNAME: 实例名，默认为orcl
2) 重启监听器，当然可以在windows服务中重启
打开cmd，执行：
lsnrctl stop // 关闭
lsnrctl start // 启动
解决方案：
1、SID_NAME改为具体的实例名，如：orcl
2、删除 (PROGRAM = extproc)
# listener.ora Network Configuration File: D:\oracle\product\11.2.0\dbhome_1\network\admin\listener.ora # Generated by Oracle configuration tools. SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = orcl) (ORACLE_HOME = D:\oracle\product\11.2.0\dbhome_1) (PROGRAM = extproc) (ENVS = "EXTPROC_DLLS=ONLY:D:\oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll") ) ) SID_LIST_ORCL = (SID_LIST = (SID_DESC = (SID_NAME = CLRExtProc) (ORACLE_HOME = D:\oracle\product\11.2.0\dbhome_1) (PROGRAM = extproc) (ENVS = "EXTPROC_DLLS=ONLY:D:\oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll") ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.30.134)(PORT = 1521)) ) ) ADR_BASE_LISTENER = D:\oracle
4、imp还原数据库时报错：错误12514
IMP-00058: 遇到 ORACLE 错误 12514 ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务 IMP-00000: 未成功终止导入
注意导入的实例名是否正确，可参考上述解决方案。
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原文地址：http://www.cnblogs.com/yank/p/5127314.html
