If you change a user's group membership so that he or she has less privileges, you may want to clear the cache entries for that user to make sure that your changes take effect immediately. Similarly, if you change a user or group's privileges on an object, you can clear the cache entries for that object.
You can also clear the entire cache.
Clearing
the cache will result in cache misses on subsequent requests and may
degrade the portal's performance until the cache is repopulated.
To clear the entire cache, or to clear the cache for a particular user, you must be the portal administrator. To clear the cache for a particular portal object, you must have at least Manage privileges on the object.
In the Services portlet, click Global Settings.
Note: By default, the Services portlet is on the Administer tab of the Builder page.
Click the Cache tab.
Select Clear The Entire Web Cache.
Click Apply or OK to clear the cache.
In the Services portlet, click Global Settings.
Note: By default, the Services portlet is on the Administer tab of the Builder page.
Click the Cache tab.
In the Clear Cache For User field, enter the name of the user for whom you want to clear the cache.
Tip: If you are not sure of
the user name, click
and select from the list provided.
Click Apply or OK to clear the cache for the specified user.
Note: Alternatively, you can clear the cache for a particular user by editing the user's portal profile.
You can clear cache entries for page groups, pages, page templates, portlets in the Portlet Repository, Portal database providers, and Portal database provider components.
In the Navigator, drill down to the object with which you want to work.
For page groups, pages, and page templates, click Properties, then click the Access tab.
For Portal database providers, and Portal database provider components, click Grant Access.
For portlets, click Edit Root Page next to the Portlet Repository page group, drill down to the page that contains the portlet, edit the portlet, and click the Access tab.
Click Clear Cache.
Click OK.
For more information about Oracle9iAS Web Cache, refer to the Web Cache documentation on Oracle Technology Network.
How does caching work in Oracle9iAS Portal?
Setting the expiry time for invalidation-based caching