Hope you're using latest SUM version,If not then please refer SAP Note 1878193 - Central Note - Software Update Manager 1.0 SP10 [lmt_006]
--------------------< D050889 05/JUN/2014 >------------------------------
DB connect problem with SUM for systems on ORACLE or SAP ASE database
Symptom: A source system with SAP Kernel 7.41 and an individual key mode for Secure Storage in File System (SSFS) leads to DB connect issues in different SUM phases (READCVERS_DUMP, INITPUT_PRE, SQLDB*, SQLSELEXE*).
Reason: The SUM tool applies a DBSL version that is not ready for the new SSFS key mode.
Solution: To continue the update, you need to reset the SSFS key mode to default. Enter the following commands in the command line tool:rsecssfx pf=<INSTANCE_PROFILE> changekey 000000000000000000000000000000000000000000000000
mv DIR_GLOBAL/security/rsecssfs/key/SSFS_K41.KEY DIR_GLOBAL/security/rsecssfs/key/SSFS_K41.KEY.SAV
Hope this will help you.
Regards,
Gaurav