Postupgrade Checks and Time Zone Change - Command Line Ugrade to Oracle 18.3.0
https://mikedietrichde.com/2018/07/26...
This video shows the post upgrade steps after a successful Oracle Database upgrade to Oracle 18.3.0 on the command line. It includes checking the logfiles, recompilation with utlrp.sql and the time zone adjustment from DST v.14 to v.31