Unused service in Solaris 10 and default user in Oracle 10

Hi,

Our SAP system (ERP6 EHP4) were installed on Solaris 10 and Oracle 10

Questions are:

- Which ports of /etc/services on Solaris 10 can disable without affect with SAP?

- Which default users in Oracle 10 can lock or disable (or change password)?

Ps. For Auditing purpose and security hardening in SAP ERP6 EHP4.

Best regards,

Choosak B.