错误：

[oracle@ocmb 11.2.0]$ sqlplus / as sysdba

Error 6 initializing SQL*Plus

SP2-0667: Message file sp1.msb not found

SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory

原因：

[oracle@ocmb ~]$ cat .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

ORACLE_BASE=/u01/app/oracle

ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

PATH=$ORACLE_HOME/bin:$PATH

解决：

[oracle@ocmb ~]$ cat .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 ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

export PATH=$ORACLE_HOME/bin:$PATH