I hit this error message while trying to add standby file on standalone 11.2.0.4 database+ ASM disks on AIX operating system:

Symptoms:

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH FORCE;

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH FORCE
*
ERROR at line 1:
ORA-10878: parallel recovery slave died unexpectedly

Error in the alert log:

Exception [type: SIGSEGV, Invalid permissions for mapped object] [ADDR:0x0] [PC:0x100137314, kggibr()+52] [flags: 0x0, count: 1]
Errors in file /oracle11g/db/TEST/11.2.0/log/diag/rdbms/stby/STBY/trace/STBY_pr04_9830594.trc (incident=201896):
ORA-07445: exception encountered: core dump [kggibr()+52] [SIGSEGV] [ADDR:0x0] [PC:0x100137314] [Invalid permissions for mapped object] []

Here is the solution:

ALTER DATABASE RECOVER MANAGED STANDBY
DATABASE USING CURRENT LOGFILE DISCONNECT noparallel;

Reference:
Bug 9728806 – ORA-7445 [kggibr()+52] during recovery on IBM AIX POWER Systems [ID 9728806.8]