BRCONNECT ERROR LOADING OCI.DLL FAILED

I am trying to install SAP R/3 Enterprise 4.70 on Windows Server 2000, database Oralce 9.2 and I want to install entire SAP system in 1 Computer.

I have been installed Oracle 9.2 and SAP's center service successfully.

But when i install SAP's database service, when SAPinst run to the Database load (post processing) (R3load jobs: finishing SAPVIEW), it throws error as below and

teminated.

at brconnect.log, the B0999E Loading sql client oci.dll failed

i checked connection with D3TRANS -D,

but there was no problem ....

please tell me the answer