In Application Express release 4.2 due to changes for the new grid layout, when a page is rendered, all regions in a certain display point are evaluated before rendering that display point, to find out if they should be displayed or not (so that the grid lay knows how many columns to render). Applications running in compatibility mode 4.1 respect the specific Browser Security attributes. Applications running in compatibility mode Pre 4.1 function as if the Cache is enabled and as if Embed in Frames is set to allowed. The Embed in Frames attribute controls if the browser displays your application's pages within a frame. Enabling the Cache attribute enables the browser to save the contents of your application's pages in its cache, both in memory and on disk. If you desire the behavior as it was in Application Express release 4.0 or earlier releases, set the compatibility mode of the application to a release earlier than the 4.1 release.Īlso, in Application Express release 4.1, there are two new application Security Attributes to control Browser Security: Cache and Embed in Frames.
To realize the new behavior in an application, set the compatibility mode of the application to 4.1. Prior to Application Express release 4.1, an invalid column name of the source of an item would not raise an error when rendering the page but it would also not set session state of the item. In Application Express release 4.1, Automatic DML forms raise an error when rendering the page if the column name of the source of an item is invalid. Use this attribute to obtain specific application behavior. Certain runtime behaviors are changed from release to release. This attribute controls the compatibility mode of the Application Express runtime engine. You may choose to either omit the PlsqlRequestValidationFunction from the Database Access Descriptor definition, or follow the recommended approach of extending the supplied validation function. To learn more, see "Restricting Access to Oracle Application Express by Database Access Descriptor (DAD)" in Oracle Application Express Administration Guide.Įnabling the PlsqlRequestValidationFunction for a Database Access Descriptor may cause existing applications which relied upon publicly executable procedures to fail. This can be extended using the validation functions shipped with Oracle Application Express. By default, the only procedures permitted are the public entry points of Oracle Application Express.
The purpose of this parameter is to limit the number of procedures which can be invoked through mod_plsql. The Database Access Descriptor now contains a parameter for PlsqlRequestValidationFunction. The value of the character set portion of PlsqlNLSLanguage in the configuration of the mod_plsql Database Access Descriptor (DAD) must be set to A元2UTF8, regardless of the underlying database character set.
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