oracle 9i upgrade to 10g

Hi

I upgraded sap(SRM) oracle from 9.2.0.8.0 - 64bit Production (AIX) system to oracle 10.2.0.2.0 - 64bit Production by referring document guide: GUIDE_UX_ORA_UPGRADE_210, completed postupgrade activity,

Database is running very fine , could not able to connect the database through SAP, when R3trans -d command executed it gives the following error

RISRCOM5701:psmadm 3> R3trans -d

This is R3trans version 6.13 (release 640 - 07.01.08 - 14:25:00).

2EETW169 no connect possible: "DBMS = ORACLE --- dbs_ora_tnsname

= 'PSM'"

R3trans finished (0012).

RISRCOM5701:psmadm 4>

Regards,

Harish Shetty