Limitation of the number of values in an LOV

Question

Greetings,
I have a tabular form with few of the columns as LOVs. One of the LOVs returns close to 1000 records and the form is giving me a "PL/SQL Numeric Value error". If I do a rownum < 450 in the LOV query the form works. But I need all the values in the LOV.
Any ideas ow to fix this issue. Your help will be greatly appreciated.
Thanks
Vatsa

Answer 1

sr**** wrote:
I have a tabular form with few of the columns as LOVs. One of the LOVs returns close to 1000 records and the form is giving me a "PL/SQL Numeric Value error". If I do a rownum < 450 in the LOV query the form works. But I need all the values in the LOV.
Any ideas ow to fix this issue. Your help will be greatly appreciated.The total size of the HTML generated for an LOV-based item in APEX is restricted to 32K&mdash;something that can be discovered by a basic search of the forum.
You have not provided enough information to enable anyone to "fix this issue" directly. ALWAYS provide the following information in a question:
<li>Full APEX version
<li>Full DB version and edition
<li>Web server architecture (EPG, OHS or APEX listener)
<li>Browser(s)/version(s) used
<li>Theme
<li>Template(s)
<li>Region type(s)
When discussing a tabular form, always indicate whether it was created using a wizard with generated column items, validations and MRU processing, or created manually using <tt>apex_item</tt> API items and custom validations and processing (or some other combination of these possibilities).
LOVs can be used in rendering a number of APEX items: text look-ups, select lists, radio groups and pop-ups. You have not specified which item type(s) are involved. All of these item types except pop-ups are subject to the 32K restriction.
For text look-ups rendered as Display as Text (based on LOV, does not save state), change the display type to Display as Text (escape special characters, does not save state) and do the the look-up in the query using a join or scalar subquery.
As pointed out above, even if it was possible to render a select list or radio group with 1000 options in APEX, this is way too many for an effective UI. There's also the effect on the overall size of a page: if the tabular form displays 10 rows, and each select list contains 32K of options, how big is the page? How long does it take to download? The maximum number of options I'd use in a select list is the ~200 used in lists of countries. (For select lists used in tabular forms I'd prefer to limit it to about 6!) The workaround for select lists/radio groups is to change them to Popup Key LOVs.