How can I know Oracle schema name which is the actual backend for my SAP system?

I would like to know oracle schema name for my SAP system as I am working on modifying configuration settings from other application?For IDES having Sql Server as backend the schema name resulted as "ec7" for my SAP system but not sure on how I can get the schema name for oracle and sybase ASE or sybase Anywhere as backends.Please let me know as this is an urgent requirement .