Publishing Reports to the Web - Downloads - Oracle

The key segments of this specification are described below.
DISPLAY and Printer Dependencies on UNIX
urlping-parameters is a category that identifies all of the URLs to be pinged by
the OC4J module. The protocol used for pinging is AJPv1.3.
/reports/rwservlet/pingserver?start=auto is the URL to be pinged by the
OC4J module. In the context of the in-process Reports Server, pinging this URL allows
OPMN to determine whether the Reports Server application is responsive. If it is
unresponsive, OPMN restarts the corresponding OC4J process.
value=200 specifies a valid HTTP code (200) that is expected in response to the ping
request. If the response HTTP code matches the value configured here, OPMN
considers the application healthy and responsive. Otherwise, OPMN restarts the OC4J
process.
3.7 DISPLAY and Printer Dependencies on UNIX
3.7.1 ScreenPrinter
In previous releases of OracleAS Reports Services on UNIX, you had to set the
DISPLAY environment variable for Reports Server. Previous releases required
DISPLAY to use the windowing system display surface for creating images and getting
pixel resolution. This dependency is removed in OracleAS Reports Services 10g (9.0.4).
Additionally, previous releases required a valid printer on UNIX for fonts. When no
valid printer was available, OracleAS Reports Services used the screen fonts, which
again required setting the DISPLAY environment variable. In Release 10g (9.0.4),
OracleAS Reports Services includes a default screen printer surface, ScreenPrinter, that
emulates a screen or printer for fonts in the absence of an available printer. As a result,
OracleAS Reports Services does not require a printer on UNIX as of OracleAS Reports
Services 10g (9.0.4).
By default, the environment variable REPORTS_DEFAULT_DISPLAY is set to YES,
which specifies that OracleAS Reports Services should:
■ remove the dependency on the DISPLAY environment variable (UNIX only)
■ use ScreenPrinter for surface resolution for images and font information (UNIX
only)
■ enable the Advanced Imaging Support (all platforms)
If you wish to revert to the old behavior from previous releases, you can set REPORTS_
DEFAULT_DISPLAY=NO.
See Also: Appendix B, "Reports-Related Environment Variables"
For more information on Oracle Reports environment variables.
The PostScript printer driver screenprinter.ppd provides surface resolution for
images and specifies font information. This driver is the first entry in
uiscreenprint.txt. The file locations (UNIX only) are:
uiscreenprint.txt : ORACLE_HOME/guicommon9/tk90/admin
screenprinter.ppd : ORACLE_HOME/guicommon9/tk90/admin/PPD
ScreenPrinter is used for:
Configuring OracleAS Reports Services 3-45