Linux启动Oracle监听

要启动Oracle监听，您需要执行以下步骤：

1. 登录到Oracle所在的Linux服务器，并使用Oracle软件所有者的身份运行命令行。

2. 打开终端并输入以下命令以切换到Oracle用户：

   su - oracle

3. 使用以下命令启动Oracle监听器：

   lsnrctl start

4. 等待几秒钟，直到监听器完全启动并显示“已启动”。

   LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 10-JUL-2021 08:30:32

   Copyright (c) 1991, 2013, Oracle.  All rights reserved.

   Starting /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
   System parameter file is /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
   Log messages written to /u01/app/oracle/diag/tnslsnr/linux-4s9k/lsnrctl/alert/log.xml
   Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
   Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=linux-4s9k)(PORT=1521)))

   Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
   STATUS of the LISTENER
   ------------------------
   Alias                     LISTENER
   Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
   Start Date                10-JUL-2021 08:30:33
   Uptime                    0 days 0 hr. 0 min. 0 sec
   Trace Level               off
   Security                  ON: Local OS Authentication
   SNMP                      OFF
   Listener Parameter File  /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
   Listener Log File         /u01/app/oracle/diag/tnslsnr/linux-4s9k/lsnrctl/alert/log.xml
   Listening Endpoints Summary...
     (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
     (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=linux-4s9k)(PORT=1521)))
   The listener supports no services
   The command completed successfully

5. 您现在可以使用Oracle客户端连接到数据库。