Checkpoint is taking high time to complete on TT18
Found one URL mentioning the similar issue and ttckptconfig is changed in result of that.
But cause of the issue is not mentioned on the URL
https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=84302819793886&id=2801075.1&displayIndex=1&_afrWindowMode=0&_adf.ctrl-state=qt443ozns_90#CAUSE