skgxpmmap and kjzfrcv messages in trace files

Hello,

I'm working on a 2 nodes RAC cluster running 12.1.0.2.0 Standard Edition.

In my trace files on the two nodes, I have lot of messages like displayed below:

*** 2017-02-24 12:10:29.312

SKGXP:[7f5ff55d1ed0.4]{0}: skgxpmmap: rgn 0x7f5ff3a1e1c8 at idx 1 and 0x7f5ff51bc248 at idx 0 have the same id 51929 (cnt = 0)

*** 2017-02-24 12:10:53.662

SKGXP:[7f5ff55d1ed0.5]{0}: skgxpmmap: rgn 0x7f5ff3a1e1c8 at idx 1 and 0x7f5ff3f67230 at idx 2 have the same id 51932 (cnt = 0)

*** 2017-02-25 00:31:06.298

2017-02-25 00:31:06.298450 :kjzfrcv(): retrying send dest=1, session id=0, seqnum=1220869 after timeout bufhdl=0x7f5ff479b270, mapregion=0x7f5ff3f6b000