Did You Know? -- March 2002
By Hervé Deschamps, Oracle Corporation.
Designer 6i has changed its algorithm for attaching libraries to forms.
It used to attach the library identified in the MODLIB preference before
it attached libraries in the form's module network. Now, it attaches the
MODLIB library AFTER all other libraries.
Designer 6i Form Generator has changed how it handles views. Forms based
on views can now retrieve server generated values from the database without
any extra coding. In order to support this, Form Generator now requires
that if a view usage is updateable, the associated view must have a primary
key defined in Designer. To avoid this problem, add a primary key to all
The algorithm for calculating button width appears to have changed from
the previous release of Designer. If the button width is set in the Repository,
generated width is wider than it was when generated with Designer 6.0.
If the button width in the Repository is null, Designer is taking the width
from the button object in the object library and adding .2" to it.
Designer has changed its algorithm for handling a form in which the
module component and/or window height and width are set to null. It used
to determine the size automatically to be just big enough to display the
data. Now, it creates forms that are much too large. However, if you fill
in the height and width, Designer will now expand the canvas and wondow
as needed to display data. So, it is better now to fill them in.
How to prevent Designer from attaching libraries with their full path?
In this case only the name of the pll file will be inserted into "PLL Library"
property in Forms by Forms generator. Forms will search for PLL on default
Go to dialog window 'Generate Form'
Choose Dependencies tab page
Empty 'Pll file Path' field
(First in working directory then in directories in FORMS60_PATH the
in <ORACLE_HOME>/BIN). However I do not know a way to stop the generators
from adding the .PLL after the library name.
How to look for the character '_' in a column? Or the character¨'%'?
You need to escape them like this:
where product_code like '%\_%' escape '\'
The backslash is the escape character that we chose. The escape character
can be used to cause Oracle to interpret % or _ literally, rather than
as a special character.
Oracle Installer - Pentium 4
The Oracle installer is a java based application and by default invokes
the java runtime with the JIT (just in time compiler) enabled. When installing
to a Pentium 4 machine the JIT module which resides in "symcjit.dll" does
not handle the processor id correctly and crashes. To workaround this problem
simply disable the JIT compiler option in the Oracle installation parameter
file "ORAPARAM.INI" by adding the "-nojit" option as follows:
Hervé Deschamps is a Technical Manager with
Oracle Corporation. Over the years he has developed a number of applications
using Oracle Development Tools and others. He has an extensive experience
of all phases of the development life cycle. He is also known in the technical
community for his article publications centered around best custom development
practices and for his user group presentations. You can reach him by e-mail
at herve.deschamps@.oracle.com. He also maintains a web site full of articles,
scripts, tips and techniques at http://www.iherve.com.