ORA-00600: internal error code, arguments: [krfg_mgen_coord2], [82], [2], [2], [], [], [], [], [], [], [], []

Problem: 

On one of 19c active data guard RAC database the recovery process was keep failing with below error:

ORA-00600: internal error code, arguments: [krfg_mgen_coord2], [82], [2], [2], [], [], [], [], [], [], [], []
ORA-10877: error signaled in parallel recovery slave
ORA-10877: error signaled in parallel recovery slave
ORA-10877: error signaled in parallel recovery slave
ORA-10877: error signaled in parallel recovery slave
Incident details in: /u01/oracle/diag/rdbms/sp/sp1/incident/incdir_1639057/sp1_mrp0_4991_i1639057.trc 

Fix:

I came to know it's Bug 12407536 | MRP PROCRESS CRASHES DUE TO ORA-600 [KRFG_MGEN_COORD2]
The workaround is to disable the FLASHBACK feature which was already enabled on that database:

SQL> ALTER DATABASE FLASHBACK OFF;
SQL> RECOVER MANAGED STANDBY DATABASE NODELAY DISCONNECT;