如何如何重命名DB- How to Rename DB_NAME with NID? 一般可以Follow 下面的过程：
rename database 重命名db,原DB_NAME=MACLEANS 需要修改为MACSH
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 1653518336 bytes
Fixed Size 2228904 bytes
Variable Size 956304728 bytes
Database Buffers 687865856 bytes
Redo Buffers 7118848 bytes
Database mounted.
[oracle@mlab1 ~]$ nid target=system/oracle DBNAME=MACSH SETNAME=Y
DBNEWID: Release 11.2.0.3.0 – Production on Tue May 28 12:00:16 2013
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
Connected to database MACLEANS (DBID=639200705)
Connected to server version 11.2.0
Control Files in database:
+DATA/macleansh/controlfile/current.272.816564929
+FRA/macleansh/controlfile/current.256.816564929
Change database name of database MACLEANS to MACSH? (Y/[N]) => Y
Proceeding with operation
Changing database name from MACLEANS to MACSH
Control File +DATA/macleansh/controlfile/current.272.816564929 – modified
Control File +FRA/macleansh/controlfile/current.256.816564929 – modified
Datafile +DATA/macleansh/datafile/system.260.81656479 – wrote new name
Datafile +DATA/macleansh/datafile/sysaux.266.81656479 – wrote new name
Datafile +DATA/macleansh/datafile/undotbs1.264.81656479 – wrote new name
Datafile +DATA/macleansh/datafile/users.273.81656479 – wrote new name
Datafile +DATA/macleansh/datafile/example.263.81656499 – wrote new name
Datafile +DATA/macleansh/tempfile/temp.262.81656497 – wrote new name
Control File +DATA/macleansh/controlfile/current.272.816564929 – wrote new name
Control File +FRA/macleansh/controlfile/current.256.816564929 – wrote new name
Instance shut down
Database name changed to MACSH.
Modify parameter file and generate a new password file before restarting.
Succesfully changed database name.
DBNEWID – Completed succesfully.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 1653518336 bytes
Fixed Size 2228904 bytes
Variable Size 956304728 bytes
Database Buffers 687865856 bytes
Redo Buffers 7118848 bytes
SQL> alter system set db_name=’MACSH’ scope=spfile;
System altered.
SQL> startup force;
ORACLE instance started.
Total System Global Area 1653518336 bytes
Fixed Size 2228904 bytes
Variable Size 956304728 bytes
Database Buffers 687865856 bytes
Redo Buffers 7118848 bytes
Database mounted.
Database opened.
SQL> show parameter db_name
NAME TYPE VALUE
———————————— ———– ——————————
db_name string MACSH
SQL>
SQL>
SQL> select name from v$database;
NAME
———
MACSH
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