安装Oralce之后,想连接一下,结果通过客户端PL/SQL,怎么也连不上,提示TNS:监听程序当前无法识别连接
解决办法:
1.查看本机的/$/Oracle/oracle/network/admin/
vi tnsnames.ora
没改之前后面的端口是1523 ,我把它改成1521了SALES =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = sales)
)
)
LISTENER_SALES =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC3))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
2.再查看listener.ora
默认没有修改的是这样:其中没有上文
tnsnames.ora中sales
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /mapbar/oracle/oracle)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC3))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1523))
)
需要增加:
红色部分是新增加的SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /$/oracle/oracle)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = sales)
(ORACLE_HOME = /$/oracle/oracle)
(SID_NAME = sales)
) )
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC3))
)
(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
)
)
3.执行 lsnrctl stop
lsnrctl start修改Oracle 10g的字符集根据status信息对MySQL服务器进行优化相关资讯 Oralce教程
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