os_authent_prefix does not

DB version: 11.2.0.2
Operating system: Solaris 5.10

I set myself os_authent_prefix $ EXT. But whenever I create a user, it is not get prefixed to the user name. No idea why?
SQL> show parameter os_authent_prefix

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
os_authent_prefix                    string      EXT$


SQL> create user TESTUSR IDENTIFIED EXTERNALLY  default tablespace USERS temporary tablespace TEMP;

User created.

SQL> select username from dba_users;

USERNAME
------------------------------
TESTUSR   --- Shouldn't this be EXT$TESTUSR ??  
EXT$RJUSR
SYSTEM
SYS
DIP
OUTLN
ORACLE_OCM
DBSNMP
WMSYS

Yes, see below,

[oracle@EDLVC1R4P0 admin]$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 17 19:00:00 2011

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing
options

SQL> alter system set os_authent_prefix='EXT$' scope=spfile;

System altered.

SQL> startup force
ORACLE instance started.

Total System Global Area 364081152 bytes
Fixed Size 1336568 bytes
Variable Size 226495240 bytes
Database Buffers 130023424 bytes
Redo Buffers 6225920 bytes
Database mounted.
Database opened.
SQL> show parameter os

NAME TYPE VALUE
------------------------------------ ----------- ----------------------
--------
db_lost_write_protect string NONE
diagnostic_dest string /u01/app/oracle
optimizer_index_cost_adj integer 100
os_authent_prefix string EXT$
os_roles boolean FALSE
remote_os_authent boolean FALSE
remote_os_roles boolean FALSE
timed_os_statistics integer 0
SQL> create user oracle identified externally;

User created.

SQL> grant dba to oracle;

Grant succeeded.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release
11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing
options
[oracle@EDLVC1R4P0 admin]$sqlplus /

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 17 19:02:04 2011

Copyright (c) 1982, 2009, Oracle. All rights reserved.

ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name:
ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name:
ERROR:
ORA-01017: invalid username/password; logon denied

SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting
SQL*Plus
[oracle@EDLVC1R4P0 admin]$sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 17 19:03:08 2011

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing
options

SQL> create user EXT$oracle identified externally;

User created.

SQL> grant dba to EXT$oracle;

Grant succeeded.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release
11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing
options
[oracle@EDLVC1R4P0 admin]$sqlplus

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 17 19:04:06 2011

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Enter user-name:
ERROR:
ORA-01017: invalid username/password; logon denied

Enter user-name: ^[[A
[oracle@EDLVC1R4P0 admin]$sqlplus /

SQL*Plus: Release 11.2.0.1.0 Production on Wed Aug 17 19:04:15 2011

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing
options

SQL> sho user
USER is "EXT$ORACLE"
SQL>

HTH
Aman...

Tags: Database

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