【數據庫】PLSQL Developer出現ORA-12541TNS no listener錯誤解決方法

00. 目錄

01. 問題描述

第一次裝Oracle和PLSQL Developer，在打開plsql登錄後出現ORA-12541:TNS:no listener的錯誤

02. 問題分析

listener.ora配置文件中的host與Centos的不一致導致的。

03. 問題解決

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))
      # 此處的HOST改爲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 =
  #此處的HOST改爲0.0.0.0
  (ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))


ORCL =
  (DESCRIPTION =
    #此處的HOST改爲0.0.0.0
    (ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

3.3 重新啓動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. 結果驗證

連接Ok.

05. 附錄

5.1 【Tools】PLSQL Developer13.0.4註冊和使用教程

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