Solution :
1. Remove the parallel clause from datapump expdp/impdp and retry the job.
2. If that does not work try increasing the size of streams_pool_size.
Alter system set streams_pool_size=120M;
EXPDP Failed with ORA-39065, ORA-39079, ORA-06512, ORA-06512, ORA-24033
ERROR :
Error Description: IMPDP fails or terminate with following errors.
ORA-39065: unexpected master process exception in SEND
ORA-39079: unable to enqueue message RP,KUPC$C_3_20120305232114,MCP,KUPC$A_4_232736061619000,1,N
ORA-24033: no recipients for message
Job “SYS”.”SCHEMAEXP” stopped due to fatal error at 02:12:47