bash: sqlplus: command not found 解决方法

[oracle@dg1 ~]$ sqlplus /nolog
bash: sqlplus: command not found
[oracle@dg1 ~]$ ln -s $ORACLE_HOME/bin/sqlplus /usr/bin
ln: creating symbolic link `/usr/bin/sqlplus' to `/bin/sqlplus': Permission deni ed
[oracle@dg1 ~]$ su - root
Password:
[root@dg1 ~]# ln -s $ORACLE_HOME/bin/sqlplus /usr/bin
[root@dg1 ~]# su - oracle
[oracle@dg1 ~]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Mon May 11 12:51:24 2009
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area  167772160 bytes
Fixed Size                  1218316 bytes
Variable Size              79694068 bytes
Database Buffers           83886080 bytes
Redo Buffers                2973696 bytes
Database mounted.
Database opened.
SQL>

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