【数据库】PLSQL Developer出现ORA-12541TNS no listener错误解决方法

00. 目录

文章目录

• 00. 目录
• 01. 问题描述
• 02. 问题分析
• 03. 问题解决
• 04. 结果验证
• 05. 附录

01. 问题描述

第一次装Oracle和PLSQL Developer，在打开plsql登录后出现ORA-12541:TNS:no listener的错误

02. 问题分析

listener.ora配置文件中的host与Centos的不一致导致的。

03. 问题解决

3.1 修改配置文件listener.ora

[oracle@localhost ~]$ vim /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
# 此处的HOST改为0.0.0.0
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
)
)

ADR_BASE_LISTENER = /u01/app/oracle

3.2 修改配置文件tnsnames.ora

[oracle@localhost ~]$ gedit /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

LISTENER_ORCL =
#此处的HOST改为0.0.0.0
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))

ORCL =
(DESCRIPTION =
#此处的HOST改为0.0.0.0
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

3.3 重新启动lsnrctl

[oracle@localhost ~]$ lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 30-JUN-2020 20:57:01

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully
[oracle@localhost ~]$

[oracle@localhost ~]$ lsnrctl start

04. 结果验证

连接Ok.

05. 附录

5.1 【Tools】PLSQL Developer13.0.4注册和使用教程

参考：https://blog.csdn.net/dengjin20104042056/article/details/107029452