Excess audit records created in OEE 12cR2.

Since we've upgraded to 12cR2, we've noticed that our RMAN catalog reconciliation process is causing an unusual amount of SYS audit logs to be written (audit_sys_operations=TRUE):

-rw-r----- 1 oracle dba      10240243 Dec 17 20:23 DMCUST_ora_32697_20181217202301103993143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:23 DMCUST_ora_32697_20181217202314569022143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:23 DMCUST_ora_32697_20181217202328261723143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:23 DMCUST_ora_32697_20181217202341652356143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:24 DMCUST_ora_32697_20181217202355355386143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:24 DMCUST_ora_32697_20181217202408763458143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:24 DMCUST_ora_32697_20181217202422447558143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:24 DMCUST_ora_32697_20181217202435637408143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:25 DMCUST_ora_32697_20181217202449039490143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:25 DMCUST_ora_32697_20181217202502717012143795.aud

-rw-r----- 1 oracle dba      10240243 Dec 17 20:25 DMCUST_ora_32697_20181217202516138594143795.aud