C:>sqlplus / as sysdba

SQL*Plus: Release 11.1.0.6.0 - Production on Fri Oct 14 08:48:07 2011

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Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Prod
PL/SQL Release 10.2.0.4.0 - Production
CORE 10.2.0.4.0 Production
TNS for 32-bit Windows: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production

SQL>

这一点比较适用于那些进入cde界面后，看不出来操作系统信息的，直接查oracle得知。其实eygle在他的帖子中也记录了此信息