oralce启动问题You may need to set ORACLE_HOME to your Oracle software directory

$ su oracle

$\ast \ast sqlplus/nolog\ast \ast Error6initializingSQL\ast PlusSP2-0667:Messagefilesp1<lang>.msbnotfoundSP2-0750:YoumayneedtosetORACL{E}_{H}OMEtoyourOraclesoftwaredirectory[oracle@linux6]$
$echo $ORACLE_HOME

- - 如果为空，则export ORACLE_HOME=$ORACLE_BASE/product

$source /home/oracle/.bash_profile
$sqlplus /nolog

SQL*Plus: Release 11.2.0.3.0 Production on Mon May 27 09:27:34 2019

Copyright © 1982, 2011, Oracle. All rights reserved.

SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.

Total System Global Area 784998400 bytes
Fixed Size 2232472 bytes
Variable Size 566234984 bytes
Database Buffers 209715200 bytes
Redo Buffers 6815744 bytes
Database mounted.

Database opened.
SQL> exit

Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 27-MAY-2019 09:29:09

Copyright © 1991, 2011, Oracle. All rights reserved.

Starting /db/bin/tnslsnr: please wait…

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))

STATUS of the LISTENER

Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 27-MAY-2019 09:29:13
Uptime 0 days 0 hr. 0 min. 5 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF

Listening Endpoints Summary…
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=linux6.3)(PORT=1521)))
The listener supports no services
The command completed successfully

总结

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