Check DDIC Password

Hi All,

Here i m trying to install the ECC 6.0 SR3 (JAVA+ABAP and usage type MI, DI)  on Window 2K3 32 with Oracle 10.0.2. i am getting error

Test Logon to SAP System MDSD failed 
Solution: Make sure that the system is started, that the user DDIC exists and that the password of user DDIC is correct.

• on Step Check DDIC password when i try to logon with DDIC with password (that password which i give during installation and 19920607) then i got  SAP commit failed, session terminated.

How can i resolve it.

regards,

majamil