DataSources in WebSphere

There is a data source with JNDI name "jdbc/project/SimpleDS" defined in WebSphere 7. In admin console I changed the data source properties: db_name, db_port, db_host , login and password.

Whereby the deployed applications which references to "jdbc/project/SimpleDS" data source throws the exception:

java.sql.SQLInvalidAuthorizationSpecException: [jcc][t4][2013][11249]
[4.8.87] Connection authorization failure occurred.  Reason: User ID or Password invalid. ERRORCODE=-4214, SQLSTATE=28000DSRA0010E: 
SQL State = 28000, Error Code = -4,214
    at com.ibm.db2.jcc.am.gd.a(gd.java:674)
    at com.ibm.db2.jcc.am.gd.a(gd.java:60)
    at com.ibm.db2.jcc.am.gd.a(gd.java:120)
    at com.ibm.db2.jcc.t4.b.p(b.java:2060)
    at com.ibm.db2.jcc.t4.b.c(b.java:1649)
    at com.ibm.db2.jcc.t4.db.r(db.java:799)
    at com.ibm.db2.jcc.t4.db.k(db.java:353)
    at com.ibm.db2.jcc.t4.db.c(db.java:133)
    at com.ibm.db2.jcc.t4.b.Wc(b.java:1263)
    at com.ibm.db2.jcc.t4.b.b(b.java:1184)
    at com.ibm.db2.jcc.t4.b.a(b.java:5175)
    at com.ibm.db2.jcc.t4.b.d(b.java:743)
    at com.ibm.db2.jcc.t4.b.c(b.java:685)
    at com.ibm.db2.jcc.t4.b.a(b.java:368)
    at com.ibm.db2.jcc.t4.b.<init>(b.java:308)
    at com.ibm.db2.jcc.t4.c.<init>(c.java:32)
    at com.ibm.db2.jcc.DB2PooledConnection.<init>(DB2PooledConnection.java:192)
    at com.ibm.db2.jcc.DB2XAConnection.<init>(DB2XAConnection.java:56)
    at com.ibm.db2.jcc.DB2XADataSource.getXAConnection(DB2XADataSource.java:168)
    at com.ibm.ws.rsadapter.spi.InternalGenericDataStoreHelper$1.run(InternalGenericDataStoreHelper.java:1338)
    at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
    at com.ibm.ws.rsadapter.spi.InternalGenericDataStoreHelper.getPooledConnection(InternalGenericDataStoreHelper.java:1375)
    at com.ibm.ws.rsadapter.spi.InternalDB2UniversalDataStoreHelper.getPooledConnection(InternalDB2UniversalDataStoreHelper.java:1855)
    at com.ibm.ws.rsadapter.spi.WSRdbDataSource.getPooledConnection(WSRdbDataSource.java:2624)
    at com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.createManagedConnection(WSManagedConnectionFactoryImpl.java:1695)
    at com.ibm.ejs.j2c.FreePool.createManagedConnectionWithMCWrapper(FreePool.java:2086)
    at com.ibm.ejs.j2c.FreePool.createOrWaitForConnection(FreePool.java:1761)
    at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:2636)
    at com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionManager.java:1064)
    at com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionManager.java:701)
    at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:668)
    at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:635)

How can I replace the data source properties in runtime?