Problem in starting SAP and DB2

Hi ,

I am facing problem in starting SAP,

I have installed the NW7.0 with DB2 trial version on SUSE LINUX Enterprise Server 10 SP2.

When I try start the SAP , It gives me the error

Why do I receive the error, "SQL6048N A communication error occurred during START or STOP DATABASE MANAGER processing." ?

Please can any one help me.

Thanks,

Sridhar