Oracle 机器宕机之后启动数据库

启动监听，登录数据库，启动数据库

检查监听

[oracle@oracle-db ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 24-JAN-2025 09:42:34

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

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused

启动监听

[oracle@oracle-db ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 24-JAN-2025 09:44:17

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


Starting /oracle/product/OraHome/bin/tnslsnr: please wait...

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

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date                24-JAN-2025 09:44:21
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/product/OraHome/network/admin/listener.ora
Listener Log File         /oracle/diag/tnslsnr/oracle-db/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle-db)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
The listener supports no services
The command completed successfully

监听启动成功

登录数据库

[oracle@oracle-db ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Fri Jan 24 09:45:40 2025

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> 

说明已经登录成功

检查数据库

SQL> select status from v$instance;
select status from v$instance
*
ERROR at line 1:
ORA-01034: ORACLE not available
Process ID: 0
Session ID: 0 Serial number: 0

出现以上信息说明数据库没有启动；

启动数据库

SQL> startup;
ORACLE instance started.

Total System Global Area 1.3362E+10 bytes
Fixed Size                  2265864 bytes
Variable Size            6912216312 bytes
Database Buffers         6442450944 bytes
Redo Buffers                4911104 bytes

Database mounted.

Database opened.

再次查看实例则可以看到数据库已经启动成功

SQL> select status from v$instance;

STATUS
------------
OPEN

期间使用到所有的命令

在oracle 用户下的命令

• 查看oracle监听状态： lsnrctl status
• 启动oracle监听：lsnrctl start
• 登录oralce数据库：sqlplus / as sysdba

在sqlplus 中的命令

• 查询实例状态：select status from v$instance;
• 启动数据库：startup;

这样就可以启动数据库了