使用 EXPDP 导出时，导到某张表时报错：
ORA-39014: One or more workers have prematurely exited.
ORA-39029: worker 1 with process name “DW01” prematurely terminated
ORA-31672: Worker process DW01 died unexpectedly.

trace文件部分内容：
*** 2019-11-29 09:53:13.689
Exception signal: 11 (SIGSEGV), code: 51 (Invalid permissions for mapped object), addr: 0x0, PC: [0x1008c6cdc, qcstda+053c]
Registers:
iar: 00000001008c6cdc, msr: a00000000000d032
lr: 00000001008c6d30, cr: 0000000028222844
r00: 0000000000000000, r01: 0ffffffffffdcfa0, r02: 000000011022aa28,
r03: 0000000110195ad8, r04: 0000000000000000, r05: 07000000497b36e8,
r06: 070000004134bb98, r07: 070000004f5b7598, r08: 0000000000002000,
r09: 0000000104b2f698, r10: 0000000105665b08, r11: 0000000000000000,
r12: 00000001008c6d30, r13: 00000001102674a0, r14: 0700000050ac1638,
r15: 0700000050e2b918, r16: 0000000104d781d0, r17: 070000006447f5a0,
r18: 000000000000000a, r19: 0000000000000000, r20: 0000000110000d98,
r21: 0000000000000000, r22: 070000004f5b7570, r23: 0000000000000007,
r24: 07000000577c4888, r25: 0000000000000000, r26: 07000000497b36e8,
r27: 0000000110195ad8, r28: 07000000498891a8, r29: 07000000577c45b0,
r30: 070000004f5e8f60, r31: 070000004134bb90,
*** 2019-11-29 09:53:13.690
ksedmp: internal or fatal error
ORA-07445: exception encountered: core dump [qcstda+053c] [SIGSEGV] [Invalid permissions for mapped object] [0x000000000] [] []
Current SQL statement for this session:
SELECT * FROM RELATIONAL(“OPMS”.“OP_PROCEDURE_MASTER_O”)

详细TRACE文件见附件。

SELECT * FROM OPMS.OP_PROCEDURE_MASTER_O 也会导致和数据库的连接断开。

请问原因，谢谢！