Converted the column datatype to CLOB in the table, but the forms field, which is against to this column, still truncated the large file which is more than 50-pages (around 8200 words and 32 KB).
In the forms item Property Palette, set Data Type=LONG or Char (there is no CLOB in the drop list to select). Maximum Length=65534 (forms does not allow to add more than this number such as 65535 or more). Query Length=65534.
In the block property Palette, set Query Data Source Column Type as CLOB for this column.
Any idea, suggestion and/or approach about this is very appreciated.