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  • ORA12541: TNS: 无监听程序 每天学点Oracle

    Oracle常用问题的整理

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    ORA-12541: TNS: 无监听程序

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    OK  
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    1. cmd->运行命令行-》services.msc 
    看下listener 的服务是否起来了
    2. 如果没有启动下看看,最好在dos,cmd下启动,这样能看到错误。
      c:>lsnrctl status
      c:>lsnrctl start
    3. 如果有问题,检查下tnsnames.ora 文件。 在重新启动

    或者
    在服务中 查看"OracleOraDb10g_home1TNSListener"是否开启

    oracle\product\10.1.0\db_1\NETWORK\ADMIN\tnsnames.ora

    修改密码:

    运行--cmd-- sqlplus /nolog

    SQL> conn /as sysdba

      Connected.

      SQL> alter user system identified by "123456";

      User altered.

      SQL> alter user sys identified by "123456";

      User altered.

      SQL> alter user system identified by "123456";

      User altered.

      SQL> exit

    或者这样登录:

     

     运行--cmd-- sqlplus

        Enter user-name: system

      Enter password:*****

      Connected to:

      Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production

      With the Partitioning, OLAP and Data Mining options

      SQL>  select instance_name from v$instance;

    查询当前数据名
    方法一:select name from v$database;
    方法二:show parameter db

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  • 原文地址:https://www.cnblogs.com/bingzisky/p/2601561.html
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