utltz_upg_apply script hangs while shutting down the Oracle Database

I was upgrading one Oracle Database from 12.2.0.1 to 19.23 on Windows platform manually. While upgrading the time zone files (from 26 to 43) and running the utltz_upg_apply.sql it hangs while shutting down the database for the first time.This is the last line displayed in the log file:utltz_upg_apply is ready to update to RDBMS DSTv43 … Continue reading utltz_upg_apply script hangs while shutting down the Oracle Database