ORACLE_HOME环境变量设置说明

　　今天有时间对&ORACLE_HOME&环境变量进行了如下测试：

　　[oracle@linux ~]$ export ORACLE_HOME=/u01/app/oracle//product/10.2/db_1

　　[oracle@linux ~]$ sqlplus &/ as sysdba&

　　SQL*Plus: Release 10.2.0.3.0 - Production on Mon Jun 1 13:13:07 2009

　　Copyright (c) 1982, 2006, Oracle.  All Rights Reserved.

　　Connected to an idle instance.

　　SQL> Disconnected

　　[oracle@linux ~]$ export ORACLE_HOME=//u01/app/oracle/product/10.2/db_1

　　[oracle@linux ~]$ sqlplus &/ as sysdba&

　　SQL*Plus: Release 10.2.0.3.0 - Production on Mon Jun 1 13:13:18 2009

　　Copyright (c) 1982, 2006, Oracle.  All Rights Reserved.

　　Connected to an idle instance.

　　SQL> Disconnected

　　[oracle@linux ~]$ export ORACLE_HOME=/u01/app/oracle/product/10.2/db_1/

　　[oracle@linux ~]$ sqlplus &/ as sysdba&

　　SQL*Plus: Release 10.2.0.3.0 - Production on Mon Jun 1 13:13:31 2009

　　Copyright (c) 1982, 2006, Oracle.  All Rights Reserved.

　　Connected to an idle instance.

　　SQL> Disconnected

　　[oracle@linux ~]$ export ORACLE_HOME=/u01/app/oracle/product/10.2/db_1

　　[oracle@linux ~]$ sqlplus &/ as sysdba&

　　SQL*Plus: Release 10.2.0.3.0 - Production on Mon Jun 1 13:13:42 2009

　　Copyright (c) 1982, 2006, Oracle.  All Rights Reserved.

　　Connected to:

　　Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production

　　With the Partitioning and Data Mining options

　　SQL>

　　测试结果显示，ORACLE_HOME环境变量中对&/&符号要求严格，不能在该字符串变量的值中出现多余&/&符号（虽然这样写在linux下是合法的），否则可能引起连接数据库异常。对于初学者需要提高警惕。