java gs1 128

java ean 128

java ean 128

java gs1 128

java gs1-128

java gs1-128,
java gs1 128,
java gs1-128,
java gs1-128,
java barcode ean 128,
java gs1-128,
java gs1 128,
java ean 128,
java gs1 128,
java gs1-128,
java barcode ean 128,
java barcode ean 128,
java gs1-128,
java ean 128,
java gs1 128,
java gs1 128,
java gs1-128,
java barcode ean 128,
java gs1 128,
java ean 128,

java barcode ean 128,
java gs1 128,
java ean 128,
java gs1 128,
java barcode ean 128,
java gs1-128,
java barcode ean 128,
java gs1 128,
java gs1-128,
java barcode ean 128,
java ean 128,
java barcode ean 128,
java ean 128,
java barcode ean 128,
java gs1-128,
java gs1 128,
java ean 128,
java barcode ean 128,
java gs1 128,
java ean 128,
java ean 128,
java gs1-128,
java gs1 128,
java barcode ean 128,
java gs1 128,
java gs1 128,
java ean 128,
java ean 128,
java gs1-128,
java barcode ean 128,
java gs1-128,
java ean 128,
java barcode ean 128,
java ean 128,
java gs1-128,
java gs1-128,
java gs1-128,
java gs1-128,
java gs1-128,
java gs1 128,
java gs1-128,
java gs1-128,
java gs1 128,
java gs1 128,
java gs1-128,
java gs1-128,
java gs1 128,
java gs1 128,
java gs1 128,

When you have gathered performance data over a period that repre sents the typical events in your organization, you can determine the acceptable perfor mance levels These performance levels comprise your baseline Analyzing Performance-Monitoring Results The baseline you develop establishes the typical counter values you should expect to see when your system is performing satis factorily Use your baseline to detect when bottlenecks are developing or to watch for long-term changes in usage patterns that require you to increase capacity A bottleneck is a condition, often involving a hardware resource, that causes the entire system to perform poorly A bottleneck exists if a particular system component is keeping the entire system from performing more quickly Therefore, even if a component in your system is heavily used, if other components or the system as a whole show no adverse effects, there is no bottleneck.

For any specific Web site or Web application, running processes require access to Web pages, scripts, and other resources on the Web server and on other servers, such as databases and file servers. If you know the process identity of the application, you can control it via NTFS permissions. If you can participate in the design of the Web appli cation and Web site, you can give administrators the ability to appropriately control and monitor Web site usage. For example, you can do the following:

Deviations from your baseline provide the best indicator of a bottleneck However, occasional spikes in data might occur due to startup of a process and are not an accurate reflection of counter values for that process over time Set alerts according to the counter values you consider to be unacceptable, as determined by your baseline It is not unusual to trace a bottleneck to multiple sources Poor response time on a workstation is most likely to result from memory and processor problems Servers are more susceptible to disk and network problems Also, problems in one component might be the result of problems in another component, not the cause Planning and Implementing Changes to Meet the Baseline If you identify a bottleneck, you must investigate the activity of the associated resource in greater detail to determine what changes must be made Your investigation should include the follow ing considerations:.

By using the @EntityListeners annotation on the EntityListenerEmployee entity class, any callback methods within those entity listener classes will be invoked whenever EntityListenerEmployee entity instances interact with a persistence context.

Restrict access to specific Web pages or database content stored in SQL Server by requiring the process to run in the identity of the user Isolate applications from one another by running them under the identity of the application pool Restrict anonymous access to the Web server by allowing the application to run under the IUSR_computername account

Analyze hardware and software configurations. Do these configurations match Microsoft recommendations for the operating system and the services you are supporting Review the directory service log for the time period when you begin seeing outof-range counter values. Do any of the entries in the log provide information on problems which could cause a bottleneck

14-43

Tip The default application pool identity is the NetworkService account. This is a low privi leged account. A unique account should be specified and needs to be added to the IIS_WPG group in order to have access to the IIS metabase and content. The IIS_WPG group has, by default, permissions that will allow most Web sites and applications to run.

You can specify a set of default entity listeners that are applied to every entity class in the persistence unit by using the <entity-listeners> element under the top-level <entity-mappings> element in the ORM mapping file. For instance, if you wanted to apply the Auditor listener to every entity class in a particular persistence unit, you would do the following: