Oracle 11g modify database username

Source: Internet
Author: User

I recently looked at a blog and found that Oracle 11g provided the new feature of user rename. In a 10g environment, if you want to rename a user, you should first create a new user and authorize it, import all objects under the original user and delete the old user! Next we will introduce this new feature in the 11g rac environment!

1. Create a test user xxx and write the test data. The spfile file generates the pfile file to close the rac database.

 
 
  1. [oracle@node1 ~]$ sqlplus sys/Ab123456@rac5 as sysdba  
  2. SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 6 19:42:12 2012  
  3. Copyright (c) 1982, 2011, Oracle.  All rights reserved.  
  4.  
  5. Connected to:  
  6. Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production  
  7. With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,  
  8. Data Mining and Real Application Testing options  
  9.  
  10. SQL> create user xxx identified by 123456 default tablespace users;  
  11. User created.  
  12.  
  13. SQL> grant resource,connect to xxx;  
  14. Grant succeeded.  
  15.  
  16. SQL> create table xxx.test as select * from dba_objects;  
  17. Table created.  
  18.  
  19. SQL> alter user xxx rename to yyy;  
  20. alter user xxx rename to yyy  
  21.                *  
  22. ERROR at line 1:  
  23. ORA-00922: missing or invalid option 
  24.  
  25. SQL> alter user xxx rename to yyy identified by 123456;  
  26. alter user xxx rename to yyy identified by 123456  
  27.                *  
  28. ERROR at line 1:  
  29. ORA-00922: missing or invalid option 
  30.  
  31. SQL> create pfile from spfile;  
  32. File created.  
  33.  
  34. [oracle@node1 ~]$ srvctl stop database -d rac -o immediate  
  35. [oracle@node1 ~]$ srvctl status database -d rac  
  36. Instance node1 is not running on node node1  
  37. Instance node2 is not running on node node2 

2. Modify the pfile file and add the implicit parameter *. _ enable_rename_user = 'true' to start the database in restrict mode.

 
 
  1. [oracle@node1 ~]$ cd /u01/app/oracle/product/11.2.0/db1/dbs/  
  2. [oracle@node1 dbs]$ ls  
  3. hc_node1.dat  initnode1.ora  init.ora  orapwnode1  
  4.  
  5. [oracle@node1 dbs]$ tail -1 initnode1.ora   
  6. *._enable_rename_user='TRUE' 
  7.  
  8. [oracle@node1 dbs]$ sqlplus /nolog  
  9. SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 6 19:51:41 2012  
  10. Copyright (c) 1982, 2011, Oracle.  All rights reserved.  
  11.  
  12. SQL> conn /as sysdba  
  13. Connected to an idle instance.  
  14. SQL> startup restrict pfile=$ORACLE_HOME/dbs/initnode1.ora  
  15. ORACLE instance started.  
  16.  
  17. Total System Global Area 1235959808 bytes  
  18. Fixed Size                  2227904 bytes  
  19. Variable Size             805306688 bytes  
  20. Database Buffers          419430400 bytes  
  21. Redo Buffers                8994816 bytes  
  22. Database mounted.  
  23. Database opened.  
  24. SQL> select open_mode,name from v$database;  
  25.  
  26. OPEN_MODE            NAME 
  27. -------------------- ---------------  
  28. READ WRITE           RAC  
  29.  
  30. SQL> show parameter spfile;  
  31.  
  32. NAME                                 TYPE        VALUE  
  33. ------------------------------------ ----------- ------------------------------  
  34. spfile                               string 

3. Change xxx user name to yyy

 
 
  1. SQL> alter user xxx rename to yyy;  
  2. alter user xxx rename to yyy  
  3.                            *  
  4. ERROR at line 1:  
  5. ORA-02000: missing IDENTIFIED keyword  
  6.  
  7. SQL> alter user xxx rename to yyy identified by 123456;  
  8. User altered.  
  9.  
  10. SQL> select count(*) from yyy.test;  
  11.  
  12.   COUNT(*)  
  13. ----------  
  14.      74556 

4. Use spfile to start rac

 
 
  1. SQL> shutdown immediate;  
  2. Database closed.  
  3. Database dismounted.  
  4. ORACLE instance shut down.  
  5.  
  6. [oracle@node1 dbs]$ srvctl start database -d rac   
  7. [oracle@node1 dbs]$ srvctl status database -d rac   
  8. Instance node1 is running on node node1  
  9. Instance node2 is running on node node2 

V. connection test. Therefore, the user's rename operation can inherit the original permissions.

 
 
  1. SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 6 20:00:52 2012  
  2. Copyright (c) 1982, 2011, Oracle.  All rights reserved.  
  3.  
  4. Connected to:  
  5. Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production  
  6. With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,  
  7. Data Mining and Real Application Testing options  
  8.  
  9. SQL> select * from tab;  
  10.  
  11. TNAME                          TABTYPE  CLUSTERID  
  12. ------------------------------ ------- ----------  
  13. TEST                           TABLE 
  14.  
  15. [oracle@node1 ~]$ sqlplus xxx/123456@rac5  
  16. SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 6 20:01:22 2012  
  17. Copyright (c) 1982, 2011, Oracle.  All rights reserved.  
  18.  
  19. ERROR:  
  20. ORA-01017: invalid username/password; logon denied 

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