Oracle Dba 101

Overview

There is a dearth of Oracle Database Administrators inspite of having a large number of Oracle Programmers/Analysts. It is not difficult to rationalise the reason for this. Oracle Database Administration (DBA) is relatively harder to grasp and the concepts are subtle. There are a handful of books, all exhaustive treatises, on this topic, in addition to those by Oracle Corporation. There are no elementary books to smoothly introduce this fascinating topic. The present book, Oracle DBA 101: A Beginner’s Guide is ...
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Overview

There is a dearth of Oracle Database Administrators inspite of having a large number of Oracle Programmers/Analysts. It is not difficult to rationalise the reason for this. Oracle Database Administration (DBA) is relatively harder to grasp and the concepts are subtle. There are a handful of books, all exhaustive treatises, on this topic, in addition to those by Oracle Corporation. There are no elementary books to smoothly introduce this fascinating topic. The present book, Oracle DBA 101: A Beginner’s Guide is expected to fill this vital gap. At the beginner’s level, it deals with all important aspects of Oracle DBA in a simplified manner. This is a Teacher’s as well as Student’s tool for an introductory course on the topic.
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Product Details

  • ISBN-13: 9781581127645
  • Publisher: Universal-Publishers.com
  • Publication date: 1/1/2000
  • Pages: 132
  • Product dimensions: 5.50 (w) x 8.50 (h) x 0.31 (d)

Table of Contents

Preface 3
List of Illustrations 9
Chapter 1 Oracle Database 11
1.1 Memory Structures 13
1.2 Shared SQL Pool 15
1.3 Dictionary Cache 15
1.4 Redolog Buffers 16
1.5 SMON, PMON, DBWR, LGWR 16
1.6 Redolog Files 19
1.7 Control File 20
1.8 Restaurant Example 20
1.9 Standard_Meal.Ora 21
1.10 Family_Meal.Ora 23
1.11 Instance 25
1.12 Database Creation 29
1.13 Database Startup 29
1.14 Database Shutdown 30
1.15 Alert Logs 30
Chapter 2 Tables 31
2.1 Table Size: VSIZE parameter 32
2.2 Index 39
2.3 Primary/Foreign Key 41
2.4 Sizing Indexes (Non-clustered Tables) 43
2.5 Sizing Indexes (Clustered Tables) 44
Chapter 3 DBA Routine Monitoring 48
3.1 Resource Utilisation 48
3.1.1 Tablespace: Allocated and Used 49
3.1.2 View Creation 49
3.1.3 Synonym Creation 50
3.1.4 Freespace 51
3.2 Fragmentation 53
3.2.1 Contig_Space 54
3.2.2 Dba_Free_Space 55
3.3 Other Useful Views 58
3.3.1 Dba_Tables 59
3.3.2 Sys.dba_Extents 62
Chapter 4 Preventive Measures 64
4.1 Library Cache 67
4.2 Data_Dictionary_Cache 69
4.3 Threaded Server Session Memory 70
4.4 Overall Statistics 70
4.5 Disk I/O Traffic 72
4.6 Latch Statistics 74
4.7 RBS Contention 74
4.8 Redolog Buffer Contention 75
4.9 Sort Memory Contention 75
4.10 Problematic SQL Statements 77
Chapter 5 Security in Oracle 78
5.1 User Account 78
5.2 Roles 81
5.2.1 Role Creation 82
5.3 Admin 83
5.4 Profile 83
5.5 Grant 84
5.6 Some Views of Privileges 86
5.6.1 Dba_Sys_Privs 86
5.6.2 Dba_Role_Privs 87
5.6.3 Dba_Tab_Privs 87
Chapter 6 Rollback Segments 88
6.1 RBS Creation 91
6.2 Rollback Entries 92
6.3 Details of RBS 94
6.4 Estimation of RBS Size 95
6.4.1 RBS Tablespace Creation 99
6.4.2 RBS with Optimal 99
6.5 Entry Size in RBS 99
6.6 Utlbstat and Utlestat 100
6.7 Data vs RBS 100
Chapter 7 Backup And Recovery 102
7.1 OS Backup 102
7.2 Cold Backup 103
7.3 Warm Backup 103
7.4 Export/Import Utility 106
7.5 RBS for Import 109
7.6 Pitfalls in Export/Import 110
7.7 Commands For Export/Import 111
7.8 Comparison of Different Backup Methods 112
7.9 Warm Backup Commands 112
7.9.1 Warm Backup Begin/End 113
7.10 Recovery 114
7.11 Standby Database 115
7.12 Instance Failure 115
7.13 Role of DBA 116
Chapter 8 Audit 117
8.1 Session Audit 117
8.2 Object Action Audit 119
Chapter 9 Application Tuning 122
9.1 Introduction 122
9.2 Interest Calculation 123
9.2.1 Sort 123
9.2.2 Interchange of columns of Primary Key in Select Statement 124
9.2.3 Function 125
9.2.4 Commit 125
Index 126
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