ORA 600 [krr_process_read_error_1]: Oracle 12c Dataguard Error

After I upgrade the database from 11.2.0.4 to 12.1.0.2 started seeing the error “ORA 600 [krr_process_read_error_1]” on standby databases on AIX platform.  Also, MRP process is crashing.

When the MRP process crashes, the logs that come from Primary to standby will not be applied until the MRP process is started again.

Workaround:

This problem is due to the bug 22294260 happening only on AIX environments. 

Only the workaround for this problem is to start restart the recovery on standby database. 

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING ARCHIVED LOGFILE DISCONNECT;