Message Oracle ORA-55712 - XA transactions on RAC are not supported with GLOBAL_TXN_PROCESSES set to 0

ERROR	XA transactions on RAC are not supported with GLOBAL_TXN_PROCESSES set to 0
CAUSE	The initialization parameter GLOBAL_TXN_PROCESSES was set to 0.
ACTION	Set the initialization parameter GLOBAL_TXN_PROCESSES to a value greater than 0.