This is another security method, you can able to connect the particular user data from client side without supplying password using wallet.
“Password credentials for connecting to databases can now be stored in a client-side Oracle wallet, a secure software container used to store authentication and signing credentials.
This wallet usage can simplify large-scale deployments that rely on password credentials for connecting to databases. When this feature is configured, application code, batch jobs, and scripts no longer need embedded user names and passwords. Risk is reduced because such passwords are no longer exposed in the clear, and password management policies are more easily enforced without changing application code whenever user names or passwords change.”
Let See Example :
Source Host :
Step 1:
SQL> grant dba to scott;
Grant succeeded.
SQL> conn scott/tiger
Connected.
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
TEST TABLE
SQL> select name from v$database;
NAME
---------
TESTDB
SQL> select host_name from v$instance;
HOST_NAME
----------------------------------------------------------------
netbackuptest
SQL>
Client Host :
Step 2:
Create a wallet on the client using following syntex
[oracle@vcdb01 ~]$ mkdir -p /u01/app/oracle/product/wallet
[oracle@vcdb01 ~]$ mkstore -wrl /u01/app/oracle/product/wallet/ -create
Oracle Secret Store Tool : Version 11.2.0.1.0 - Production
Copyright (c) 2004, 2009, Oracle and/or its affiliates. All rights reserved.
Enter password:
Enter password again:
Step 3: Add source tns entries in client tnsnames.ora file
testdb =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST =netbackuptest)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = testdb)
)
)
Step 4: Create database connection credentials in the wallet by using the following syntax at the command line
[oracle@vcdb01 ~]$ mkstore -wrl /u01/app/oracle/product/wallet/ -createCredential testdb scott tiger
Oracle Secret Store Tool : Version 11.2.0.1.0 - Production
Copyright (c) 2004, 2009, Oracle and/or its affiliates. All rights reserved.
Enter wallet password:
Here :
testdb --> tns alias name
scott --> user name
tiger --> password
Step 5:
[oracle@vcdb01 ~]$ mkstore -wrl /u01/app/oracle/product/wallet/ -listCredential
Oracle Secret Store Tool : Version 11.2.0.1.0 - Production
Copyright (c) 2004, 2009, Oracle and/or its affiliates. All rights reserved.
Enter wallet password:
List credential (index: connect_string username)
1: testdb scott
Step 6: Add the following entries in sqlnet.ora
WALLET_LOCATION=(SOURCE=(METHOD=FILE) (METHOD_DATA = (DIRECTORY =/u01/app/oracle/product/wallet)))
SQLNET.WALLET_OVERRIDE = TRUE
Note: For clients not using such authentication methods or wanting to override them for database authentication, a new parameter (SQLNET.WALLET_OVERRIDE) in sqlnet.ora can be set to TRUE. The default value forSQLNET.WALLET_OVERRIDE is FALSE, allowing standard use of authentication credentials as before.
Step 7: connect scott using without supplying password from client machine using wallet
[oracle@vcdb01 ~]$ sqlplus /@testdb
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 25 10:27:36 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select name from v$database;
NAME
---------
TESTDB
SQL> select host_name from v$instance;
HOST_NAME
----------------------------------------------------------------
netbackuptest
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
TEST TABLE
SQL>
Step 8: Modify credential
Suppose to be, If DBA changed the password of scott user, can i able to connect from client machine using same wallet credential stored? No, you need to modify using the command line.
[oracle@vcdb01 ~]$ sqlplus /@testdb
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 25 10:29:35 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
ERROR:
ORA-01017: invalid username/password; logon denied
[oracle@vcdb01 ~]$ mkstore -wrl /u01/app/oracle/product/wallet/ -modifyCredential testdb scott test
Oracle Secret Store Tool : Version 11.2.0.1.0 - Production
Copyright (c) 2004, 2009, Oracle and/or its affiliates. All rights reserved.
Enter wallet password:
Modify credential
Modify 1
[oracle@vcdb01 ~]$ sqlplus /@testdb
SQL*Plus: Release 11.2.0.1.0 Production on Sun Mar 25 10:31:46 2012
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
Ref :Oracle Document
DBA 