Environment variable ORACLE_UNQNAME not defined错误问题解决
查看dbconsole状态的时候报错：
C:\WINDOWS\system32>emctl status dbconsole
Environment variable ORACLE_UNQNAME not defined. Please set ORACLE_UNQNAME to database unique name.其实就是
oracle_unqname没有设置
Windows下执行：
set oracle_unqname=$ORACLE_SID
如
C:\WINDOWS\system32>set oracle_unqname=orcl
再次运行即可：
C:\WINDOWS\system32>emctl status dbconsole
Oracle Enterprise Manager 11g Database Control Release 11.2.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
https://A00263.hongsin.cn:1158/em/console/aboutApplication
Oracle Enterprise Manager 11g is running.
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Logs are generated in directory E:\app\mahl01\product\11.2.0\dbhome_1/A00263.hongsin.cn_orcl/sysman/log如果是Linux下需要设置ORACLE_UNQNAME和ORACLE_HOSTNAME：
export ORACLE_UNQNAME=$ORACLE_SID
export ORACLE_HOSTNAME=localhost