Oracle10g新增的用以简化用户管理备份的命令

$ sqlplus "/ as sysdba"
SQL*Plus: Release 10.1.0.2.0 - Production on Wed Apr 6 22:31:33 2005
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SYS AS SYSDBA on 06-APR-05 >alter database begin backup;
Database altered.
SYS AS SYSDBA on 06-APR-05 >desc v$backup
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 FILE#                                              NUMBER
 STATUS                                             VARCHAR2(18)
 CHANGE#                                            NUMBER
 TIME                                               DATE
SYS AS SYSDBA on 06-APR-05 >select * from v$backup;
     FILE# STATUS                CHANGE# TIME
---------- ------------------ ---------- ------------
         1 ACTIVE               11000149 06-APR-05
         2 ACTIVE               11000149 06-APR-05
         3 ACTIVE               11000149 06-APR-05
         4 ACTIVE               11000149 06-APR-05
         5 ACTIVE               11000149 06-APR-05
         6 ACTIVE               11000149 06-APR-05
         7 ACTIVE               11000149 06-APR-05
         9 ACTIVE               11000149 06-APR-05
        10 ACTIVE               11000149 06-APR-05
        11 ACTIVE               11000149 06-APR-05
10 rows selected.
SYS AS SYSDBA on 06-APR-05 >alter database end backup;
Database altered.
SYS AS SYSDBA on 06-APR-05 >select * from v$backup;
     FILE# STATUS                CHANGE# TIME
---------- ------------------ ---------- ------------
         1 NOT ACTIVE           11000149 06-APR-05
         2 NOT ACTIVE           11000149 06-APR-05
         3 NOT ACTIVE           11000149 06-APR-05
         4 NOT ACTIVE           11000149 06-APR-05
         5 NOT ACTIVE           11000149 06-APR-05
         6 NOT ACTIVE           11000149 06-APR-05
         7 NOT ACTIVE           11000149 06-APR-05
         9 NOT ACTIVE           11000149 06-APR-05
        10 NOT ACTIVE           11000149 06-APR-05
        11 NOT ACTIVE           11000149 06-APR-05
10 rows selected.
SYS AS SYSDBA on 06-APR-05 >
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