Database Error after Heterogeneous System Copy from Oracle to MSSQL

Hi All,

After I have done a Heterogeneous System Copy of SAP NetWeaver 2004s ( from Oracle 10g to MSSQL 2005), I got database error error code 195 when running db02. It will have SQL execution error:

"select inst_id, host_name, database_status,

to_char(startup_time,'YYYYMMDD'),

to_char(startup_time,'HH24MISS'), version,

instance_name from gv$instance

'to_char' is not a recognized built-in function

name.

What can I do? Pls advice.

Thanks,

Man