Hi,
19c RAC and "log file sync" without associated dbwr activity rings a bell.
I noticed similar thing while investigating DRM related problems. In our
case GRD gets locked for a few seconds during remastering, and that totally
wrecks certain DML heavy workloads. But it looked like a collateral damage
and I didn't bother to investigate further.
Of course, with remastering going wrong there would be "gcs drm freeze in
server mode" wait events, and probably some other gcs related stuff from
"Other" wait class. That's not apparent from the traces below.
On Tue, 28 Jan 2020 at 17:11, Chris Stephens <cstephens16@xxxxxxxxx> wrote:
3-node Oracle 19.3 RAC
Centos 7
