查询源数据库的DBID，用rman登陆数据库或者select dbid from v$database;。
源DBID=392820279。
登陆到目标数据库，查看DBID
C:/>rman target /
Recovery Manager: Release 10.2.0.1.0 - Production on Tue Apr 14 00:27:31 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to target database: MICHAEL (DBID=393099115)
RMAN>
设置DBID
C:/Documents and Settings/Administrator>sqlplus sys/123@michael as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Apr 14 00:33:28 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> select dbid from v$database;
DBID
----------
393099115
SQL> show parameter db_name
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_name string michael
SQL> exec dbms_backup_restore.nidbegin('michael','MICHAEL','392820279', 393099115,0,0,10)
PL/SQL procedure successfully completed.
SQL> select dbid from v$database;
DBID
----------
393099115
SQL> variable a number;
SQL> variable b number;
SQL> variable c number;
SQL> exec dbms_backup_restore.nidprocessdf(0,0,:a,:b,:c);
PL/SQL procedure successfully completed.
SQL> print :a
A
----------
0
SQL> print :b
B
----------
1
SQL> print :c
C
----------
1
SQL> exec dbms_backup_restore.nidprocesscf(:a,:b);
PL/SQL procedure successfully completed.
SQL> print :a
A
----------
1
SQL> print :b
B
----------
1
SQL> exec dbms_backup_restore.nidend;
PL/SQL procedure successfully completed.
SQL> select dbid from v$database;
DBID
----------
392820279
代码说明：
show parameter db_name
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_name string testing
SQL> exec dbms_backup_restore.nidbegin('michael','MICHAEL','392820279', 393099115,0,0,10)
Param 1：目标数据库的实例名，即VALUE。
Param 2：为更改后的实例名，必须大写。
Param 3：为更改后的DBID。
Param 4：为原来的DBID。