Beginning Oracle Database 11g Administration From Novice to Professional

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378 CHAPTER 16 INSTANCE TUNING 2. Drop the index on the column of the table. Use the command . 3. Find the name of each employee’s manager. Use the following command: 4. Connect to the database as the user and update one of the records in the table; for example, issue the command . Do not commit this transaction. 5. Connect to the database again and attempt to delete the manager of the employee whose record you just updated; for example, issue the command . This command will be blocked by Oracle.
CHAPTER 16 INSTANCE TUNING 379 6. Connect to the database as the user. Query the table and find the session ID of the blocked session. Because you know that it is waiting for an event to complete, you can use the command . 7. Query the view and obtain the serial number of the blocked process. Use the command . 8. Begin tracing the blocked session by using the session; issue the command . Refer to Oracle Database 11g PL/SQL Packages and Types Reference for a description of the procedure. 9. Generate a Statspack snapshot by using the procedure. Using a special version of the procedure, capture performance information for the blocked session in addition to systemwide information; issue the command . 10. Now resume the first session and issue the command. This will release the blocked session, and Oracle will display the error . 11. Identify the trace file for the second session by using the command . Review the trace file and locate the lines similar to the following line: 12. Confirm that the object number listed in the trace file corresponds to the table. Use the command . 13. Perform the experiment once more and confirm that additional wait messages appear in the trace file. 14. Navigate to the folder where the trace file is located and invoke the utility from the command line. You have to specify the name of the trace file and choose a name for the output file. Review the output file created by . 15. Generate another Statspack snapshot by using the procedure with the same parameter used in step 9. Use the command . 16. Connect to the database as the or user and generate a Statspack report from the snapshots obtained in step 9 and step 15. Run the script by using the command .
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Beginning Oracle Database 11g Admin
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For Michelle. “Oh Fame!—if I e
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PART III Database Support CHAPTE
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viii CONTENTS CHAPTER 2 SQL and PL/
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x CONTENTS Client Installations ...
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xii CONTENTS Data Loading .........
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xiv CONTENTS Practical Demonstratio
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xvi CONTENTS PART IV Database Tu
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About the Author IGGY FERNANDEZ has
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Acknowledgments I would like to tha
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xxvi INTRODUCTION Who This Book Is
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xxviii INTRODUCTION performing afte
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xxx INTRODUCTION Chapter 14: Databa
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PART I Database Concepts
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4 CHAPTER 1 RELATIONAL DATABASE MA
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10 CHAPTER 1 RELATIONAL DATABASE M
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22 CHAPTER 2 SQL AND PL/SQL As an
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26 CHAPTER 2 SQL AND PL/SQL Data D
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28 CHAPTER 2 SQL AND PL/SQL The DE
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38 CHAPTER 2 SQL AND PL/SQL Introd
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40 CHAPTER 2 SQL AND PL/SQL Storin
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48 CHAPTER 2 SQL AND PL/SQL Exerci
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CHAPTER 3 Oracle Architecture Try t
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CHAPTER 3 ORACLE ARCHITECTURE 53 D
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CHAPTER 3 ORACLE ARCHITECTURE 55 T
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PART II Database Implementation
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66 CHAPTER 4 PLANNING in a separat
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68 CHAPTER 4 PLANNING Free to Down
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70 CHAPTER 4 PLANNING Architectura
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72 CHAPTER 4 PLANNING resources an
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74 CHAPTER 4 PLANNING Disk Sizing
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76 CHAPTER 4 PLANNING Disk Speed P
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78 CHAPTER 4 PLANNING t
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CHAPTER 5 Software Installation The
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CHAPTER 5 SOFTWARE INSTALLATION 83
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PART III Database Support
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186 CHAPTER 9 TAKING CONTROL Listi
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188 CHAPTER 9 TAKING CONTROL Figur
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CHAPTER 11 Fixing Problems Rise and
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CHAPTER 11 FIXING PROBLEMS 225 3.
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CHAPTER 11 FIXING PROBLEMS 227 Not
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CHAPTER 11 FIXING PROBLEMS 229
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CHAPTER 12 Backups As to our Conduc
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CHAPTER 12 BACKUPS 257 resources u
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CHAPTER 12 BACKUPS 259 backup mana
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CHAPTER 12 BACKUPS 261 Oracle-Mana
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CHAPTER 12 BACKUPS 263 RMAN procee
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CHAPTER 12 BACKUPS 269 A concise
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CHAPTER 12 BACKUPS 275 Figure 12-2
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CHAPTER 13 Recovery These Officers,
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CHAPTER 13 RECOVERY 281 base admin
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CHAPTER 13 RECOVERY 283 Flashbac
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CHAPTER 13 RECOVERY 289 Figure 13-
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CHAPTER 13 RECOVERY 301 Documentat
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CHAPTER 13 RECOVERY 303 g Lic
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CHAPTER 14 Database Maintenance “
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CHAPTER 14 DATABASE MAINTENANCE 30
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