方法一：使用sqlplus
###64位：[oracle@db01 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Fri Oct 318:44:05 2014 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to:Oracle Database 11g Enterprise Edition Release11.2.0.3.0 - 64bit ProductionWith the Partitioning, OLAP, Data Mining and RealApplication Testing options SQL> 如果是64位，用sqlplus 连上之后会显示具体的位数信息，32位则不会显示。 ###32位：[oracle@db01 ~]$sqlplus/ as sysdba; SQL*Plus: Release 11.2.0.1.0 Production onSun Sep 2508:55:48 2011 Copyright (c) 1982, 2010, Oracle. All rightsreserved. Connected to:Oracle Database 11g Enterprise EditionRelease11.2.0.1.0 - ProductionWith the Partitioning, OLAP, Data Miningand RealApplication Testing options
方法二：查看v$version 视图
###32位：SQL> select * from v$version; BANNER--------------------------------------------------------------------------Oracle Database 11g Enterprise EditionRelease11.2.0.1.0 - ProductionPL/SQL Release 11.2.0.1.0 - ProductionCORE 11.2.0.1.0 ProductionTNS for 32-bit Windows: Version 11.2.0.1.0- ProductionNLSRTL Version 11.2.0.1.0 - Production ###64位：SQL> select * from v$version; BANNER-----------------------------------oracle账号---------------------------------------------Oracle Database 11g Enterprise Edition Release11.2.0.3.0 - 64bit ProductionPL/SQL Release 11.2.0.3.0 - ProductionCORE 11.2.0.3.0 ProductionTNS for Linux: Version 11.2.0.3.0 - ProductionNLSRTL Version 11.2.0.3.0 – Production
和第一种方法一样，64位会显示具体的位数信息，32位不会显示。
方法三：查看v$sql 视图
###32位：输出为8位16进制数SQL> select address from v$sql whererownum<2; ADDRESS--------B50ACDAE ###64位：输出为16位16进制数SQL> select address from v$sql whererownum<2; ADDRESS----------------00000000C18D79C8