Review in VB.NET

Generation Quick Response Code in VB.NET Review

3 Review
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Review
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To further practice and reinforce the skills you learned in this chapter, you can complete the following tasks:
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Review the chapter summary. Review the list of key terms introduced in this chapter. Complete the case scenarios. These scenarios set up real-word situations involving the topics of this chapter and ask you to create a solution. Complete the suggested practices. Take a practice test.
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Summary
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The Log File Viewer allows you to view logs from SQL Server, the SQL Server Agent, and Database Mail. It also allows you to view all the Windows NT event logs. Searching the logs for particular error codes can help quickly diagnose problems. The disk management folder of the Computer Management console is the first place you should look when you suspect a problem with a disk or volume. The folder will display icons indicating problems with disks. CHKDSK can be used to diagnose and repair volumes, and RAM and processor problems usually cause STOP errors. The installation of new hardware or drivers can cause problems on a server and should be done only when due consideration is given to the effects the changes might have. By using the Services console, you can alter the account a service runs under, a service s startup type, and how the service reacts when it fails. It is also possible to examine a service s dependencies by using this console. The SQL Server Agent is responsible for running scheduled jobs. If this agent fails, backup jobs and SSIS packages will not execute.
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3 Review
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Key Terms
Data Matrix 2d Barcode Encoder In .NET
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Do you know what these key terms mean You can check your answers by looking up the terms in the glossary at the end of the book.
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dedicated administrator connection (DAC) dependencies Failed Redundancy filter Log File Viewer Missing Offline Severity
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Case Scenarios
In the following case scenarios, you will apply what you ve learned in this chapter. You can find answers to these questions in the Answers section at the end of this book.
Case Scenario 1: Diagnosing Database Configuration Errors
Contoso s mineral exploration division has SQL Server 2005 database servers installed on all of its Antarctic exploration vehicles. You have received a radio report from one of the vehicles informing you that members of the exploration team are experiencing some problems with their database. You suspect that the problems are related to either the tempdb database running out of space, the transaction log filling, or the database that stores the mineralogical data the exploration vehicles are collecting running out of space. You need to prepare a set of questions for the vehicle crew so that they can help you diagnose the problem. In framing the questions, you need to determine what evidence they should look for. 1. What evidence would be present if the tempdb database had run out of space 2. What evidence would be present if the transaction log was full 3. What evidence would be present if the Mineralogical database had run out of space
3 Review
Case Scenario 2: Diagnosing Database Hardware Errors
Your contact at Tailspin Toys has called to complain that the SQL Server 2005 database server you installed appears to be having some problems. After she describes the situation to you, you suspect the following:
One of the disk drives in the software RAID-5 array might have failed. Several SSIS packages that you have configured to run on the server are not executing. Another volume might be experiencing I/O errors.
Answer the following questions: 1. What evidence would be present if one of the disk drives in the RAID-5 array had failed 2. What is the likely cause of the backup jobs and SSIS packages not executing 3. What evidence would be present if there were I/O errors on a disk or volume
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