Hi Troy,

If not already checked then please check below SAP Note for few reference about Oracle NLS.

606359 - FAQ: Oracle National Language Support (NLS).

Also in this note there are mentioned 2-3 places that after Oracle 8/9i R/3 Installations are using WE8DEC by default and US7ASCII use should be avoided. Please check & reconfirm your Client registry/environment variables value as per steps given in this Note.

Thanks,

Manish