APEX

Hi all,

I am a new starter to Application Express. I have trying to build sample application, and copy pages to speed up some page development. For example: I copied Page A to B (new page) and change the table fields etc. to make B run. However, even though I had checked many times just to ensure that everything is correct (there is no difference between A and B except the table field to be referred and other necessary parameter changes), the execution of page B failed - unable to process row of table XXX.

I understand that I might have done something wrong although I am quite confidence that it shouldn't. Without wasting time to send the application for help, as a new developer to AE, I really hope that there should have some kind of debugger (not the one in AE which can't tell much of the error) that could provide tracer and highlight the error code or more detail information about what went wrong.

Anyone know of any tool that can do this job? Thanks.