Oracle patch conflict
1 Open mos
2 patches & updates
3 enter 18331944 search (18331944 19516448) first
4 left click on the selected patch-Analyze for Conflicts
5 add patch 19516448
6 Click-Analyze for Conflicts
Just download the appropriate patch according to the analysis results.
Http://www.oratea.com/2018/01/31/%E5%A6%82%E4%BD%95%E8%A7%A3%E5%86%B3oracle%E8%A1%A5%E4%B8%81%E5%86%B2%E7%AA%81/