If you try to start or shut down any WebLogic server and you receive the following error:
ASSERTION FAILED: ‘fio_delete(buf)’
In unlock_repository() (src/ext/jfr/c/repository.c:67)
Assertion failed after 0 days, time_elapsed on dayofweek_month_day_year

  1. Go to your %DOMAIN_HOME%\bin folder.
  2. Open the setDomainEnv.cmd using a text editor (Notepad, WordPad, etc.)
  3. Near the bottom of the file where it says “set JAVA_OPTIONS=%JAVA_OPTIONS%”, add a space and put -XX:-FlightRecorder
    The servers should start or shut down successfully now.