我在ＴＰＵＢ上发现的，我感觉这个脚本确实不错，按一个连接以后能用得着．http://www.itpub.net/thread-1020404-1-2.html
具体做法演示：
[oracle@rac1 ~]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jul 11 15:57:34 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> conn sys/oracle as sysdba
Connected.
SQL> @dba_snapshot_database_10g.sql
+------------------------------------------------------------------------------- ----------+
| Snapshot Database 10g Release 2 |
|------------------------------------------------------------------------------- ----------+
| Copyright (c) 1998-2008 Jeffrey M. Hunter. All rights reserved. (www.idevelopm ent.info) |
+------------------------------------------------------------------------------- ----------+
Creating database report.
This script. must be run as a user with SYSDBA privileges.
This process can take several minutes to complete.
Output written to: dba_snapshot_database_10g_ORCL_20080711.html
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
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