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When I "debug" I see the apexlib info for the tabular form showing which columns are stateful and the fXX assigned. I also see that when there is one row it shows that there are 0 rows using fxx to count.
......column UNIT_PRICE mapped to WWV_Flow.g_f02
......column TURNAROUND_TIME_DAYS not mapped - not stateful.
......column SAMPLE_FREQUENCY not mapped - not stateful.
......column STATION_NAME not mapped - not stateful.
......column HOLDING_TIME not mapped - not stateful.
......column ANALYTICAL_METHOD not mapped - not stateful.
......column MULTIPLIER mapped to WWV_Flow.g_f03
......column TOTAL_BID mapped to WWV_Flow.g_f04
......column STATUS_FLAG not mapped - not stateful.
......column COMMENTS not mapped - not stateful.
......column D_ADDED not mapped - not stateful.
...array has 0 row(s). Used f04 to count.
Generate tabform data(ApexLib_TabForm.generateBrowserData)
you can ignore the ApexLib debug message "array has 0 row(s). Used f04 to count.", because it's only valid if you submit the page. During page rendering the g_fxx arrays do not contain values that's why it's showing 0 as row count.
It is pretty simple so may not need to create an app - posted my problem in the forum http://forums.oracle.com/forums/thread.jspa?threadID=580936&tstart=0
Let me know if you need more info.