oracle10G 的ORA-12505问题解决方法
在CMD下snrctl status ，tnsping orcl 显示都正常。
在pl/SQL下用
select open_mode from v$database；
show parameter instance；
select INSTANCE_NAME from v$instance；
sqlplus sys/oracle@orcl
查询都显示正常，就是用pl/sql 登录时 填“数据库名” orcl 就无法登陆，报ora -12514
l最后有效的解决方法：
修改listener.ora文件
原listener.ora文件：
# listener.ora Network Configuration File: D:/oracle/product/10.1.0/Db_4/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:/oracle/product/10.1.0/Db_4)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)
)
修改后的文件：
---------------------------------------------------------------------------------------
# listener.ora Network Configuration File: D:/oracle/product/10.1.0/Db_4/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:/oracle/product/10.1.0/Db_4)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = D:/oracle/product/10.1.0/Db_4)
(SID_NAME = orcl)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)
)
-----------------------------------------------------------------
如果错误还存在，也可以那试一下:set oracle_sid=<sid_name>sqlplus /nologconnect sys/pwd as sysdbastart
原贴：http://www.blogjava.net/joan/archive/2008/10/28/237141.html
