2763729 - ORA-00600 [rnmoufoe1] during partitioned table reorganization

The following ORA-00600 is occurring while reorganization of partition table:

Alert.log:

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ORA-00600: internal error code, arguments: [rnmoufoe1], [], [], [], [], [], [], [], [], [], [], []

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Reorg log:

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BR1101I Starting 'online' table reorganization...
BR0280I BRSPACE time stamp
BR1124I Starting 'online' reorganization of table SAPSR3.<table> ...
BR0280I BRSPACE time stamp
BR0301E SQL error -42012 at location tab_onl_reorg-63, SQL statement:
'BEGIN DBMS_REDEFINITION.FINISH_REDEF_TABLE (UNAME => '"SAPSR3"', ORIG_TABLE => '"<table>"', INT_TABLE => '"<table>#$"'); END;'
ORA-42012: error occurred while completing the redefinition
ORA-00600: internal error code, arguments: [rnmoufoe1], [], [], [], [], [], [], [], [], [], [], []
ORA-06512: at "SYS.DBMS_REDEFINITION", line 110
ORA-06512: at "SYS.DBMS_REDEFINITION", line 2980
ORA-06512: at "SYS.DBMS_REDEFINITION", line 3706
ORA-06512: at line 1
BR0280I BRSPACE time stamp
BR1984I Aborting reorganization of table SAPSR3.<table> ...
BR0280I BRSPACE time stamp
BR1985I Reorganization of table SAPSR3.<table> aborted successfully
BR0280I BRSPACE time stamp
BR1106E Reorganization of table SAPSR3.<table> failed
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Oracle 12c

ORA-00600, rnmoufoe1, BRSPACE, Reorganization, Partition, Partitioned , KBA , BC-DB-ORA , Oracle , Problem