3015762 - The back server get error when dumping db with trace flag 504

DB size is 1454080 MB(about 1.3 TB) but data is just only 402754454 KB(about 384 GB) with sybmultbuf error.

Nov 27 07:18:31 2020: A01: SYBMULTBUF ERROR: Emulator interprocess communication failed with error state = 1, error code=109, system message=The pipe has been ended.
Nov 27 07:18:31 2020: D03: SYBMULTBUF ERROR: Emulator interprocess communication failed with error state = 9, error code=109, system message=The pipe has been ended.

• SAP Adaptive Server Enterprise (ASE) 15.7 for Business Suite
• SAP Enterprise Resource Planning (ERP) 6.0
• Traceflag 504 enabled

CR#823658, CR823658, CR 823658, 823658 , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , Problem