ORA-01034: ORACLE not available

SQL> select * from v$instance;

select * from v$instance

*

ERROR at line 1:

ORA-01034: ORACLE not available

Process ID: 0

Session ID: 0 Serial number: 0

报这个错误，查看本机的监听情况

[oracle@localhost ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 – Production on 25-FEB-2019 11:02:52

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

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

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

开启监听

[oracle@localhost ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.4.0 – Production on 25-FEB-2019 11:03:04

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

Starting /app/oracle/11204/bin/tnslsnr: please wait…

TNSLSNR for Linux: Version 11.2.0.4.0 – Production

System parameter file is /app/oracle/11204/network/admin/listener.ora

Log messages written to /app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1)(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                25-FEB-2019 11:03:06

Uptime                    0 days 0 hr. 0 min. 0 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /app/oracle/11204/network/admin/listener.ora

Listener Log File         /app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml

Listening Endpoints Summary…

  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rac1)(PORT=1521)))

The listener supports no services

The command completed successfully

查看~/.bash_profile的ORACLE_SID是否于数据库相同

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