Question

您好，我在笔记本电脑上安装了Oracle 11g来练习Oracle。我已连接到人力资源帐户。它已连接3天，但在我尝试通过SQL Developer连接后，我收到此错误：

TNS-12505: TNS:listener does not currently know of SID given in connect descriptor

Answer 1

确保

您的数据库 已启动 ;
```
$ sqlplus / as sysdba
SQL> startup
```
ORACLE_SID 参数设置为路径值;

在 Windows 上，按以下方式查找：
```
C:\Users\pc> echo %ORACLE_SID%
mydb
```
在 Unix 上，查找：
```
$ echo $ORACLE_SID
mydb
```

和 监听器 正在运行：

$ lsnrctl status
LSNRCTL for Linux : Version 12.1.0.2.0 - Production on 03-JUN-2018 09:31:07

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production
Start Date                30-MAR-2018 22:29:45
Uptime                    53 days 11 hr. 1 min. 10 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/12.1.0.2/grid/network/admin/listener.ora
Listener Log File         /u01/app/grid/diag/tnslsnr/mydb/listener/alert/log.xml
Listening Endpoints Summary...
 (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
 (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.15.81)(PORT=1521)))
 (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=mycompany.com)(PORT=5505))(Presentation=HTTP)(Session=RAW))
 (DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=mycompany.com)(PORT=5506)) 
 (Security=(my_wallet_directory=/u01/app/oracle/product/12.1.0.2/dbhome_1/admin/mydb/xdb_wallet))(Presentation=HTTP)(Session=RAW))
  Services Summary...
 Instance "mydb", status READY, has 1 handler(s) for this service...
 The command completed successfully

TNS监听器当前不知道连接描述符中给出的SID

1 个答案: