I getting error while doing datapump export using dblink from read only physical standby database
expdp system/xxx parfile=expdp_xxdr.par
expdp_xxdr.par
directory=datapump
network_link=xxdr
full=y
dumpfile=standby_database.dmp
logfile=standby_database.log
Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Advanced Analytics and Real Application Testing options
Starting "EXPORT"."SYS_EXPORT_TABLE_03": export/******** parfile=expdp_xxdr.par
ORA-39126: Worker unexpected fatal error in KUPW$WORKER.MAIN [INSERT INTO SYS.KU$_LIST_FILTER_TEMP_2@xxDR (process_order,duplicate,object_schema,object_name,base_process_order,parent_process_order) SELECT process_order,duplicate,object_schema,object_name,base_process_order,parent_process_order FROM "EXPORT"."SYS_EXPORT_TABLE_03" WHERE process_order = :1]
ORA-08176: consistent read failure; rollback data not available
ORA-02063: preceding line from xxdv
ORA-02063: preceding 2 lines from xxDR
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPW$WORKER", line 11259
----- PL/SQL Call Stack -----
object line object
handle number name
0x851c0100 27116 package body SYS.KUPW$WORKER
0x851c0100 11286 package body SYS.KUPW$WORKER
0x851c0100 2135 package body SYS.KUPW$WORKER
0x8981bac0 2 anonymous block
ALTER SESSION ENABLE PARALLEL DML
ALTER SESSION ENABLE PARALLEL DML
KUPP$PROC.WHATS_MY_ID
KUPP$PROC.WHATS_MY_ID
worker max message number: 1000
Full cluster access allowed
Testing ku$_list_filter_temp_2 on remote database
bind variable is: -55
Remote temp filter list stmt is: INSERT INTO SYS.KU$_LIST_FILTER_TEMP_2@xxDR (process_order,duplicate,object_schema,object_name,base_process_order,parent_process_order) SELECT process_order,duplicate,object_schema,object_name,base_process_order,parent_process_order FROM "EXPORT"."SYS_EXPORT_TABLE_03" WHERE process_order = :1
In procedure DETERMINE_FATAL_ERROR with ORA-08176: consistent read failure; rollback data not available
ORA-02063: preceding line from xxdv
ORA-02063: preceding 2 lines from xxDR
Job "EXPORT"."SYS_EXPORT_TABLE_03" stopped due to fatal error