ASP.NET PDF Viewer using C#, VB/NET

Misses in library cache during parse: 0 Notice how the statement was parsed only once. The rest of the time the prepared statement was obtained from the implicit cache, avoiding the soft parse. Also, implicit caching reduced the elapsed time by almost half (0.42 seconds versus 0.82 seconds). The tkprof output for the CallableStatement case follows. It proves that the anonymous block gets soft-parsed only once due to implicit statement caching. begin/*+ enabled implicit caching for callable statement */ :1 := f; end; call count ------- -----Parse 1 Execute 1000 Fetch 0 ------- -----total 1001 cpu elapsed disk query current -------- ---------- ---------- ---------- ---------0.01 0.00 0 0 0 2.13 2.06 0 0 0 0.00 0.00 0 0 0 -------- ---------- ---------- ---------- ---------2.14 2.06 0 0 0 rows ---------0 1000 0 ---------1000

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GUIDs are often displayed during software installation and are familiar for their mysterious syntax of a sequence of hexadecimal digits enclosed in curly braces These GUIDs are also used to identify COM classes; these IDs are known as CLSIDs and are stored in the Windows registry as subkeys containing further metadata about the COM object When CreateObject is invoked, the code infrastructure looks for the key: HKEY_CLASSES_ROOT\WordApplication\CLSID The default value for the key in this example (on one of our computers) is as follows: {000209FF-0000-0000-C000-000000000046} Now you can access the registry key defining the COM component and find all the information relative to the component The following screenshot shows the content of the LocalServer32 subkey, where it says that winwordexe is the container of the WordApplication component.

In ASP NET 1x, the Page type inherits its event model from SystemWebUIControl This is nice, because it means all controls placed on a Web Form share an event model with the Page object This simplifies responding to events on User Controls, and is especially nice while you re developing custom Web Controls, because there s only one event model you need to become familiar with Ironically, this event model is lacking when it comes to developing User Controls and custom controls Sometimes there s an action that needs to be taken at the page level after all instances of a specific event have fired on controls, or before any instances fire on controls, and there s no hook to do this This is one of the driving forces behind some new events on the Page type in version 20 of the Framework.

Misses in library cache during parse: 1

If a COM component should be executed in a process different from that of the creator, LocalServer32 contains the location of the executable Components are often loaded in-process in the form of a DLL, and in this case it is the InprocServer32 key that indicates the location of the library..

The other driver is some of the new functionality exposed in 20 Some of this functionality is wired before the Init event fires at the Page level (that is, Master Pages and Themes) To facilitate making changes to these features from code, an event has been added that fires before the Init event does Keep in mind that the purpose of a lot of these events may not be obvious when thinking about a single ASPX page using canned Web Controls A lot of these events become relevant when you re coding User Controls, when custom control development is part of the project, when you re using Master Pages, or when an application is using generic types derived from the Page type as base classes for ASPX pages, instead of just inheriting directly from SystemWebUIPage.

Explicit statement caching enables you to cache selected prepared, callable, and plain statements. Explicit statement caching caches a statement with a key, an arbitrary Java string that you provide. The biggest difference between explicit and implicit caching is that with explicit caching, you have to use specialized Oracle methods that end with WithKey to cache and retrieve statements. This also implies that you have to use the interfaces OraclePreparedStatement and OracleCallableStatement, respectively, to use explicit statement caching. In the case of implicit caching, the JDBC driver automatically creates a statement if it is not there in the cache. In the case of explicit caching, the JDBC driver returns null for the statement; you have to check for null and explicitly create a statement using the createStatement() method, as we ll cover