Publishing Reports to the Web - Downloads - Oracle

Methodology
Format triggers should be placed at the highest level possible in the object/frame
hierarchy so that the trigger fires at the lowest possible frequency. For example:
Figure 20–2 Format Triggers
Maximize the efficiency of the code, whenever you define any triggers or PL/SQL
program units within Oracle Reports. For example, to change the display attributes of
a field dynamically to draw attention to values outside the norm, change the attributes
using individual built-ins such as the SRW.SET_TEXT_COLOR() built-in procedure.
Refer to the PL/SQL User's Guide and Reference for general PL/SQL tuning issues.
Assigning a transparent border and fill pattern to layout objects (for example, frames
and repeating frames) improves performance, as these objects are not rendered as a
bitmap file.
20.1.3.2 Web Layout and JSP Report Definition
In Oracle Reports, you can use your favorite Web authoring tool to design the static
portion of your Web page and then use Reports Builder to insert the dynamic portion
(data) into appropriate sections of the page. A poorly designed Web page impacts
perceived performance. Alternatively, you can use pre-defined Oracle9i Web templates
to build the Web page.
Avoid including Java code in a JSP file (mixing business and data access Java code
with presentation logic) as it increases the JSP’s footprint and limits the efficient use
and management of system resources.
Customized formatting of a Web page is always an expensive operation. Any type of
formatting that cannot be natively achieved through Oracle Reports (e.g., change the
foreground color of a data block) should be done using Java. We discourage the use of
PL/SQL wrappers for formatting purposes.
A .jsp report definition can contain both a paper layout definition and a Web layout
definition. Oracle Reports always formats the paper layout definition first when
executing the report, since the Web layout section of a JSP report could contain an
tag referencing a paper layout object. If your JSP report does not
reference any paper layout objects at all, we recommend using the SUPPRESSLAYOUT
command line option to prevent Oracle Reports executing the paper layout formatting.
20-14 Oracle Application Server Reports Services Publishing Reports to the Web