[grid@bcc2 ~]$ sql


SQL*Plus: Release 11.2.0.3.0 Production on Wed Jan 7 15:26:21 2015


Copyright (c) 1982, 2011, Oracle.  All rights reserved.


Connected to an idle instance.


SQL> exit
Disconnected


[grid@bcc2 ~]$ vi .bash_profile 
# .bash_profile


# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi


# User specific environment and startup programs


PATH=$PATH:$HOME/bin


export PATH


export PATH
export ORACLE_SID=+ASM2
export ORACLE_BASE=/u01/app/grid
export ORACLE_HOME=/u01/app/11.2.0//grid/   --多了一个 / 删除并保存
export JAVA_HOME=$ORACLE_HOME/jdk
export PATH=$ORACLE_HOME/bin:$JAVA_HOME/bin/:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib
#export NLS_LANG=AMERICAN_AMERICA.ZHS16GB
alias sql='sqlplus / as sysasm'
~
~
~
".bash_profile" 22L, 494C written
[grid@bcc2 ~]$ sql


SQL*Plus: Release 11.2.0.3.0 Production on Wed Jan 7 15:27:28 2015


Copyright (c) 1982, 2011, Oracle.  All rights reserved.


Connected to an idle instance.


SQL> exit
Disconnected
[grid@bcc2 ~]$ . .bash_profile    --重新生效
[grid@bcc2 ~]$ sql


SQL*Plus: Release 11.2.0.3.0 Production on Wed Jan 7 15:27:38 2015


Copyright (c) 1982, 2011, Oracle.  All rights reserved.




Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options


SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options

有时候问题就发生在一个小的细节中，仔细的发现异常，没有不可解的问题。