You use the CCTRACK setting in the essbase.cfg file to control whether Essbase tracks which currency partitions have been converted and the exchange rates used for the conversions. By default, Essbase tracks which currency partitions have been converted. For more information about tracking currency conversions, see the Oracle Essbase Database Administrator's Guide.
cctrack (essbase.cfg setting) in the Oracle Essbase Technical Reference
cconv tolocalrate (calculation command) in the Oracle Essbase Technical Reference
set cctrackcalc (calculation command) in the Oracle Essbase Technical Reference
clearcctrack (calculation command) in the Oracle Essbase Technical Reference