Oracle 11.2.0.4 impdp every slow on step "Object Type: SCHEMA_EXPORT/VIEW/COMMENT"

Hi,

I am import data into 11.2.0.4 RAC database using impdp. dump file size is around 13GB. Tables loading and index rebuild are fast.

But it is very slow on step "Processing object type SCHEMA_EXPORT/VIEW/COMMENT"

Import> status

Job: SYS_IMPORT_FULL_01

  Operation: IMPORT

  Mode: FULL

  State: EXECUTING

  Bytes Processed: 13,628,484,152

  Percent Done: 99

  Current Parallelism: 3

  Job Error Count: 0

  Dump File: /u40/oracle/backup/dev1129/expdp_ifsprd2_01.dump

  Dump File: /u40/oracle/backup/dev1129/expdp_ifsprd2_02.dump

  Dump File: /u40/oracle/backup/dev1129/expdp_ifsprd2_03.dump

Worker 1 Status:

  Process Name: DW00

  State: EXECUTING

  Object Type: SCHEMA_EXPORT/VIEW/COMMENT

  Completed Objects: 29,280