Engine execution in 64 bit machine

Hi ,I am facing a challenge in executing the engine in 64bit windows machine.

All other objects are working fine. CWB,BM,DP.....

Engine is also getting connected to the DB successfully.

but it throws the following error
10:01:08:988 [EngLogger.cpp,220] Logger General Level: message, UserLevel: message
10:01:08:989 Working with Oracle RDBMS
10:01:09:001 Database connection string: Provider=MSDAORA;Data Source=orclme User: DEMANTRA
10:01:09:170 ERROR ---------------------------------------------------------------
10:01:09:270 ERROR Database Error [db_win.cpp,137]
10:01:09:370 ERROR   - Source: ADODB.Connection
10:01:09:470 ERROR   - Description: Provider cannot be found. It may not be properly installed.
10:01:09:570 ERROR   - Message: Unknown error 0x800A0E7A
10:01:09:670 ERROR   - Error Number: 0x800a0e7a - Undefined Error.