OHS, EPG, and APEX Listener Compared - Expert Oracle Application Express - page 47

4 - LOG WARNING
5 - LOG NOTICE
6 - LOG INFO
7 - LOG DEBUG
Then we need to enable error logging in our DAD:
system@ae1>exec dbms epg.set dad attribute('APEX', 'error-style', 'DebugStyle');
If we now visit a URL which has an issue (such as a nonexistent page), we will get more debugging
information, as shown in Figure 1-22.
Figure 1-22. Extra debug information using EPG logging
Now while this extra debugging information is not going to “auto-magically” solve all of your
problems, it is certainly more helpful than just a standard HTTP-404 page which gives you next to no
useful information.
Once you have resolved the issue, you can turn off the extra debugging information by issuing the
command
system@ae1> exec dbms epg.delete dad attribute('APEX', 'error-style');