[LIBSQLOD SO][MaxDB] Invalid authorization

I have installed SAP Content Server 6.40 with Max db version as below

VERSION = 7.6.00

BUILD = DBMServer 7.6.00 Build 018-123-119-055

OS = UNIX

INSTROOT = /sapdb/ADB/db

LOGON = True

CODE = UTF8

SWAP = normal

UNICODE = YES

INSTANCE = OLTP

SYSNAME = AIX

I configured the CSADMIN on SAP ECC 6.0 and created a repository.But when I try to start the repository through CSADMIN->details it gives me error

HTTP error: 500 Internal Server Error Cannot open

Repository: SQLConnect failed, [MySQL

MaxDB][LIBSQLOD SO][MaxDB] Invalid authorization

I ran the report RSCMSPWS and gave the user/password SAPR3/SAP for the particular repository and check the conf.cs file as well.

But the error still confinues.

Can anyone help me .. on this.

Thanks in advance

Murali